@article { author = {Kishk, A. and El-Mowafy, M.}, title = {RICE SEED PRIMING TO OVERCOME SALT STRESS CONDITIONS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {685-694}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49676}, abstract = {This study investigated the potential of seed priming for induction of salt tolerance in rice. Two lots of rice seeds (high and low vigor) cv Sakha 106 were primed in aerated solutions of KNO3 2%, CaCl2 2%, PEG 2%, ascorbic acid 100 ppm and control (distill water) each for 24 h. Two experiments were conducted in laboratory and pots. The primed seeds were planted in (0, 3000, 4500, 6000 and7500 ppm NaCl) at Seed Technology Research Unit, Mansoura. Seed Technology Research Department, ARC. The results revealed that priming with KNO3 2% followed by control, CaCl2 2% , ascorbic acid 100 ppm, and PEG 2% were more effective in inducing salt tolerance owing to improved seed germination, seedling vigor index, speed of germination, rate of germination and seedling emergence in pots experiment in 0 and 3000 ppm NaCl. Freshly harvested seed recorded higher germination percentage (80%). It is therefore recommended that KNO3 could be adopted for priming rice seed under 3000 ppm as it maintained seed viability and seedling vigor optimally among other treatments. Reduced germination parameters due to increasing salinity levels up to 7500 ppm. The results showed that application of KNO3 or CaCl2 at 2% improved all studied seed quality traits under salinity stress conditions. Thus, results signify the role of priming substances and high vigor in regulating salinity response of pre-treated seed could be used as a potential growth regulator, for improving common seedlings growth under salinity stress conditions.}, keywords = {Rice (Oryza sativa L.),Seed priming,seedling growth,salinity and seed storage}, url = {https://jpp.journals.ekb.eg/article_49676.html}, eprint = {https://jpp.journals.ekb.eg/article_49676_2819323a3a7e5921dcd017f5489193a6.pdf} } @article { author = {El-Degwy, I. and Kamara, M.}, title = {YIELD POTENTIAL, GENETIC DIVERSITY, CORRELATION AND PATH COEFFICIENT ANALYSIS IN RICE UNDER VARIABLE ENVIRONMENTS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {695-714}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49678}, abstract = {The present study was carried out at Agronomy Department, Faculty of Agriculture, Kafrelsheikh University, Egypt during the two successive seasons 2013 and 2014. The material of this study included thirteen rice genotypes viz., Sakha 102, Sakha 104, Sakha 105, Sakha 106, Giza 177, Giza 178, IET 1444, IRAT 170, IRAT 112, Hybrid rice 2, Moroberekan, WAB 878 and Gaori. Such genotypes were sown on three different sowing dates i.e. 15 th April, 1 st May and 15 th May under three nitrogen fertilization levels; 40, 60 and 80 kg N/fed. Split plot design with three replications was used for each sowing date. The present investigation was undertaken to study yield potential, genetic diversity, correlation and path analysis as well as genetic variability of the aforementioned rice genotypes under the different sowing dates. The mean squares due to sowing dates, nitrogen levels, genotypes and the first order as well as the second order interactions were significant or highly significant for most of the studied characters. The first sowing date (15 th April) recorded the most desirable estimates for panicle length, number of spikelets/ panicle, number of grains/ panicle, fertility percentage, 1000-grain weight and grain yield. The intermediate nitrogen level (60 kg N/fed) recorded the most favorable values for grain yield, number of grains/ panicle and panicle length. As a mean over sowing dates and nitrogen levels, grain yield was maximized in case of Hybrid rice 2, IET 1444 and Giza 178. Hybrid rice 2 recorded the most desirable estimates of number of grains/ panicle and number of panicles/ panicles either under the first or the second sowing dates associated with the highest nitrogen level.  Grain yield revealed significant positive correlation with each of, panicle length, number of spikelets/ panicle, number of grains/ panicle and number of panicles/ plant under all sowing dates, suggesting that grain yield can be improved in these rice genotypes through selection based on these traits. The relationship between most pairs of traits was approximately constant and showed the same direction under all environments (sowing dates). Path coefficient analysis revealed that under the third sowing dates, number of grains/ panicle detected the highest positive direct effect on grain yield followed by number of panicles/ plant and days to 50% heading; 0.80, 0.626 and 0.378, respectively. While, number of spikelets/ panicle, fertility percentage and number of panicles/ plant recorded the highest positive direct effect on grain yield under the intermediate sowing date. Moreover, number of spikelets/ panicle and panicle length were the most contributors at early sowing date. Grain yield exhibited higher PCV and GCV estimates compared with the other traits under all sowing dates while, such estimates were minimized in case of fertility percentage. The heritability estimates in broad sense were either moderate or high for all the characters under consideration under all sowing dates. Number of days to 50% heading showed estimates of broad sense heritability more than 98% under all sowing dates. While, such estimates were less than 80% in case of number of panicles/ plant; 76.46% (under the first sowing date), grain yield; 71.28% (under the intermediate sowing date) and number of grains/ panicle; 58.3% (under the third sowing date). The genetic advance under selection as percentage of mean was found to be high for grain yield; 29.9, 36.6 and 30.3% for the three sowing dates, respectively. High heritability estimates coupled with high genetic advance were recorded for number of number of days to 50% heading, plant height and panicle length. Moreover, moderate heritability estimates associated with high genetic advance were observed for grain yield. Based on cluster analysis, the genotypes were categorized into four clusters. The First cluster contained 4 genotypes; Giza 177, Sakha105, Sakha106 and Gaori. The second group included Sakha 102, Sakha 104 and hybrid rice 2. The third cluster including two indica rice genotypes; Giza 178 and IET 1444. There are two sub groups in cluster four. Moroberekan rice variety was separated into one sub group. The other sub group including drought tolerance genotypes; IRAT 170, IRAT and WAB 878. The Dendrogram of cluster analysis classified the nine traits in two clusters. The first one comprised grain yield and three of major yield-related traits viz., number of panicles/ plant, 1000-grain weight and panicle length. There were two sub groups in cluster two. One of the sub group belonged to cluster two included heading date, plant height and fertility percentage. While, number of grains/ panicles and number of spikelets/ panicle were separated in the other sub group.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49678.html}, eprint = {https://jpp.journals.ekb.eg/article_49678_b810300a43143734ab84db97432df6c0.pdf} } @article { author = {El-Gazzar, I. and Hassan, M. and El-Ghonemy, M.}, title = {EVALUATION OF NEW YELLOW SINGLE AND THREE WAY CROSSES IN MAIZE}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {715-723}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49750}, abstract = {In order to estimate the general combining ability effects for both inbred lines and testers . Fourteen new yellow inbred lines of maize were top crossed to two testers, inbred lines Gz 656 and SC 162 at Sakha in 2012 season. The 28 top crosses (14 single crosses and 14 three way crosses) and two checks (SC162 and TWC 353) were evaluated at Sakha and Mallawei Agricultural Research Stations in 2013 seasons. Number of days to 50% silking, plant height, ear height, ear length, ear diameter and grain yield/plant were estimated. Significant differences between the locations were detected for all the studied traits except for number of days to 50% silking. Mean squares due to lines (L) and testers (T) and their interaction L x T were significant for all the studied traits except for T for ear height and L x T interaction for days to 50% silking, ear length and ear diameter. The additive gene effects were the most important component controlling the inheritance of days to 50% silking, ear length and grain yield/plant. Meanwhile, the non-additive gene effects played the major contribution in the inheritance of plant height, ear height and ear diameter. The best inbred line for general combining ability (GCA) effects  were  Sk 6004/40, Sk 5001/37, Sk6021/42, Sk6021/43 and Sk6021/43 for days to 50% silking, short plant and ear height, ear length, ear diameter and grain yield/plant, respectively. The tester inbred line Gz 656  had desirable GCA effects for short plant height, ear length, , ear diameter and grain yield/plant. While, the tester SC 162 showed desirable GCA for earliness. The best cross for specific combining ability (SCA) effects  was Sk6021/46 x Gz 656 for grain yield/plant. The best mean crosses for earliness, plant height and ear height were  Sk 6004/40 x SC 162, Sk 6004/40 x Gz 656  and Sk 5001/35 x Gz 656, respectively. Single cross Sk 6021/46 x Gz 656 did not significantly outyield the check SC 162 .similarly, were  the three way crosses Sk 5001/32 x SC 162, Sk 5001/33 x SC 162, Sk 5001/36 x SC 162, Sk 6006/41 x SC 162, Sk 6021/42 x SC 162  and Sk 6021/46 x SC 162 compared to check TWC 353. It could conduced that the new single crosses and three way crosses could be recommended for further testing in the hybrids development program .}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49750.html}, eprint = {https://jpp.journals.ekb.eg/article_49750_b0a70b36bad530e25df384e4390d2f65.pdf} } @article { author = {Ibraheem, F. and Abdel-Moneam, M.}, title = {CLASSIFICATION OF SOME NEW MAIZE HYBRIDS ACCORDING TO EARLINESS AND PHYSIOLOGICAL MATURITY RELATED TRAITS UNDER LOW AND HIGH NITROGEN FERTILIZATION CONDITIONS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {725-748}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49754}, abstract = {Production of new maize hybrids with desirable package of earliness and physiological maturity related traits without compromising grains yield is critical for various agricultural systems worldwide. This investigation were carried out during 2012 season to evaluate the impact of the different genetic makeup of a set of thirteen new hybrids, developed by the authors during 2011 season, on flowering related traits such as anthesis, silking, anthesis-silking intervals (ASI), and the efficiency of light absorption of plant cover as well as physiological maturity related traits such as grains filling period, and grains filling rate. The impact of these traits on ear yield under both N stress and N sufficient conditions was also investigated. The results revealed that the tested hybrids exhibited significant differences in all tested flowering related traits. Based on the phenotype of their earliness traits (days from sowing to 50% flowering) and the general mean value of these traits (60.24 days for flowering), the tested hybrids were relatively categorized into early flowering early flowering (with number of days from ≤ 50 to 55 days, e.g. B73X PHG47, B73X HP301, B73X PH207, B73X PHj40, B73X NC358, B73X Mo17), intermediate flowering (hybrids with number of days from 55 to 65 days, e.g. B73X CML103, B73X Tzi8, B73X B97, B73X Rg5, B73X Inb209, B73X Sids63), and late flowering (with number of days from 65 to ≥ 70 days, e.g. B73X Inb.204, and the check crosses SC3084, SC173, SC168, SC167, SC10) hybrids. The results also revealed significant differences among the tested hybrids in grains filling period, grains filling rate, and physiological maturity under both N stress and N sufficient conditions. The magnitude of grains filling rate ranged from 1.4 g/day to 6.8 g/day. Based on the values of individual and general mean grains filling rates, the tested hybrids were classified into low rate grains fillers (≤ 1.4 to 3.5 g/day, e.g. B73X HP301, B73X PHj40 and B73X PH207), intermediate rate grains fillers (3.5 to 4.5 g/day, e.g. B73X Phg47, B73X B97, B73X Mo17, B73X Inb209, B73X Sids63, B73X Rg5, B73X Inb.204, SC3084, SC168, SC167, SC173, SC10) and rapid rate grains fillers (4.5 to ≥ 6 gram/day, e.g. B73X CML103, B73X TZI8 and B73X NC358) under N stress conditions. The classification of the tested hybrids was slightly changed under N sufficient conditions because of the high N induced changes in grains filling rates. The correlation analysis indicated strong positive correlation between ear yield plant-1 and grains filling rate under low (r = 0.97**) and high (r = 0.98**) N rates. Interestingly, among hybrids, the cross B73X CML103 maintained the highest ear yield with acceptable package of other flowering and physiological traits. It attained the highest values of grains filling rate (6.87 g/day, low N, 6.05 g/day, high N), moderate length of grains filling period (44.33 days), and the shortest ASI (3.67 days). These results indicate that the cross B73X CML103 has strong sink tissues, vigorous and sustainable remobilization of its metabolic resources after pollination and will be less vulnerable for pollination stress. Therefore, the cross B73X CML103 exhibits improved physiological adaptation to N stress and better management of its internal N under high N rate, and consequently this study recommend this cross (B73X CML103)for large scale evaluation and commercial production.}, keywords = {Maize,genotypes,nitrogen,N-stress,earliness,ear,yield,Light,traits}, url = {https://jpp.journals.ekb.eg/article_49754.html}, eprint = {https://jpp.journals.ekb.eg/article_49754_2f85977813672c5addbb51398b3f150d.pdf} } @article { author = {Haroun, Samia and El-Sherbeny, Ghada and Jasim, Riyam}, title = {STUDY ON THE ECOLOGY OF Chenopodium murale L. IN NILE DELTA, EGYPT.}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {749-756}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49757}, abstract = {This study offers a description of the vegetation of Chenopodium murale community and evaluating the plant and soil parameters relationships. Classification analysis (TWINSPAN) revealed three vegetation groups; group A dominated by Chenopodium murale, group B dominated by Melilotus indicus and group C was dominated by Pseudognaphalium  luteo-album. The ordination analysis (CCA) evaluate the Chenopodium murale and soil parameters relationship. The results indicated that Chenopodium murale showed a close relationship with soil clay, porosity, moisture content and total phosphorous whereas negatively correlated with electric conductivity, total dissolved salts, sodium and sulphate.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49757.html}, eprint = {https://jpp.journals.ekb.eg/article_49757_04735fd8bd81e193a44fd485a02a80ba.pdf} } @article { author = {Mikhail, E. and Osman, I. and Goargiuos, K.}, title = {FOLIAR APPLICATION OF N-PHENYL-PHTHALAMIC ACID AFFECTS POLLINATION, FRUIT SET, YIELD, FRUIT CHARACTERS AND OIL CONTENT OF TWO OLIVE CULTIVARS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {759-767}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49759}, abstract = {This study was carried out through 2011, 2012 and 2013 seasons in a private farm at Cairo- Alexandria desert road on 9-years-old of "Manzanillo" and "Picual" olive cultivars. The trees were planted at 4 x 6 m apart on sandy loam soil under drip irrigation system. Nevirol (N-Phenyl-Phthalamic acid) applications at different concentrations at 0, 50, 100, 150 or 200 ppm were foliar sprayed at full blooming stage. Results showed that 50 ppm Nevirol was more effective in improving fruit set percentage (by about 28.0 %), retained fruits %, fruit yield (by about 14.2 %) over the control once. On the other hand, fruit characters; fruit weight, size, dimensions, shape, flesh weight, seed weight, fruit moisture and oil content were not affected by Nevirol treatments, hence 200 concentration were ppm significantly decreased fruit characters of the two studied olive cvs. However, histological studies showed that 50 ppm Nevirol enhanced fruit set by improving pollen tube growth through the style than the other higher concentrations of Nevirol or control.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49759.html}, eprint = {https://jpp.journals.ekb.eg/article_49759_e60bb04bdac30250b94d08da89805b32.pdf} } @article { author = {Abou El-Khashab, A. and Mikhail, E.}, title = {USING COMPOST AND OLIVE POMACE FOR TRANSPLANTING OF ROOTED OLIVE (Olea europea L. CV. Aggezi) CUTTINGS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {769-781}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49760}, abstract = {An experiment was conducted under saran house at the Nursery of Hort. Res. Inst., ARC, Giza, Egypt during 2013 and 2014 seasons to examine the effect of some growing media, viz. compost + sand at 1:1, 1:2 or 1: 3 ratios, by volume and olive pomace + sand at the same ratio as suitable alternatives for traditional media (either loam + sand or peatmoss + sand at 1:2, v/v for each) usually used for transplanting rooted olive cuttings, transplanting times (on spring or autumn) and their interactions on growth and quality of rooted olive cuttings cv. Aggezi transplanted after 1, 2 or 3 months from rooting start for each time in 10-cm-diameter black plastic bags filled with about 1 kg of one of the aforementioned media. Results indicated that survival (%) of transplants was significantly increased by planting the rooted cuttings in compost + sand (1: 2, v/v) and olive pomace + sand (1: 1 or 1: 2, v/v) media, as these two media gave the highest percentages in most cases of both seasons. The first period (of spring) recorded the highest survival (%) for rooted cuttings transplanted after one month compared to those of the second period (of autumn), while the two periods alternatively scored the highest percent of survival for rooted cuttings transplanted after either 2 or 3 months from rooting commencement. However, the best survival (%) at all was attained by transplanting in either compost + sand or olive pomace + sand media (1: 2, vol. for each) on either first or second period. The results also showed that most vegetative and root growth parameters of the produced transplants were greatly improved by planting in either compost + sand (1 : 2, v/v) or olive pomace + sand (1 : 1or 1:2, v/v) media regardless of time of planting (either in spring or in autumn), but the mastery in both seasons was for planting in compost + sand (1 : 2, v/v) medium that recorded the highest means in most characters. The content of total chlorophyll in the leaves was significantly decreased in response to various treatments applied in such study, except of planting in sand amended with compost at 2: 1 or 3: 1, v/v which gave values greatly near to those registered by control media in the only 1st season. Hence, it can be recommended to transplant the rooted cuttings of olive cv. Aggezi in compost + sand (1 : 2, v/v) medium at any period of the year as a more suitable and cheaper medium than peatmoss + sand one.  }, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49760.html}, eprint = {https://jpp.journals.ekb.eg/article_49760_d7b3e80a6a663cb4bfdf6ebdd22cd60b.pdf} } @article { author = {El-Seidy, E. and Moussa, A. and Abd El-Razek, U. and Al-Farouk, M.}, title = {EFFECTS OF IRRIGATION DEFICIT AND SOWING METHODS ON GROWTH CHARACTRS AND WATER REQUIREMENTS OF SOME WHEAT CULTIVARS}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {783-796}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49763}, abstract = {In order to investigate the influence of different irrigation regimes i.e. irrigation at tillering stage (I1), at tillering and heading stage (I2) at tillering , heading and grain filling stage (I3) of the available soil moisture depletion with three methods of sowing i.e. broadcasting, drilling and beds sowing on some and characters of growth attributes, relative water content, water use efficiency and drought susceptibility index for four wheat cultivars namely; Gemmeiza-11,Misr-1, Shandaweel-1 and Sids-12. So, two field trials was carried out during 2011/12 and 2012/13 seasons, at El- Gemmeiza Agric. Res. Stat. The results can be summarized as follows: Subjecting wheat plants to drought-stress resulted in a significant reduction in plant height, number of days to heading, number of days to maturity, grain filling period, flag leaf area and relative water content. Water use efficiency and total chlorophyll content tends significantly increased as irrigation regime decreased. Moreover, number of days to heading, number of days to maturity, grain filling period and flag leaf area were insignificant differed due to the tested sowing methods. However, beds sowing method was significantly differed total chlorophyll content, relative water content and water use efficiency. Gemmeiza-11 cultivar surpassed others tested cultivars with respect the abovementioned traits, except number of days to maturity since Shandaweel-1 cultivar was the earliest. Wheat plants grown under severe water deficit were more sensitive to drought. This was clear from drought sensitivity based on drought susceptibility index. Sids-12 and Misr-1 cultivars was proved to be the most drought-tolerant cultivar compared to the other tested ones.}, keywords = {Wheat,irrigation regimes,water requirements,sowing methods,drought susceptibility index}, url = {https://jpp.journals.ekb.eg/article_49763.html}, eprint = {https://jpp.journals.ekb.eg/article_49763_6ae49620987fd879eead4d5da86de113.pdf} } @article { author = {Abd El -Latif, Amany and Ibrahem, Nadia and Ismaiel, Shadia}, title = {EFFECT OF VERNALIZATION PERIODS AND PLANTING DATE ON PLANT SURVIVAL, EARLINESS, AND YIELD COMPONENTS OF GLOBE ARTICHOKE}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {797-808}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49768}, abstract = {This study was carried out at El-Kanater Research Station, El-Kaluobia Governorate during the two successive seasons of 2012-2013 and 2013-2014, to investigate the effect of two combination, between two vernalization periods (30 and 45days  at 5 0C and 85%R.H.) and two planting dates (August 15th and September 1st) in addition to control (without vernalization) on growth, yield and its components as well as inulin contents of Globe Artichoke. The experimental design was complete randomized block design with three replications. Results show clearly that plants vernalizaed for 30 or 45 days and planted on September 1st gave the highest plant survival percentage followed by those vernalized for 45 days and planted on August 15th in the two tested seasons. The lowest survival percent was shown in non vernalized plants planted on August 15th or on Sept.1st.  Also vernalization for 30 days then planting on September 1st and vernalization for 45 days and planting on Aug.15th gave the highest leaf number and head dry mater content.  Number of early heads per plant and per feddan increased significantly with vernalization than control. Vernalization for 30 days then planting in Sept.1st showed significantly the highest weight of early yield per plant as well as weight and diameter of receptacle in the two tested years.  Plants received vernalization for 30 days and panted on Sept.1st gave the highest number of  total heads / plant and per feddan in the two tested years. plants vernalized for 45 days then planted in Aug. 15th produced the highest significant total yield /plant and inulin contents  in the two tested years. Late planting showed significant decrement in the diameter of  flower heads of total yield regardless vernalization. The study recommends that vernelization of Globe Artichoke plant materials at 5oC and 85%RH in peat moss layers  for 30 days before early planting on Aug.15th is very needed to enhance plant survival, yield and quality as well as inulin content in Globe Artichoke heads   }, keywords = {Globe artichoke,vernalization,planting date,yield and quality}, url = {https://jpp.journals.ekb.eg/article_49768.html}, eprint = {https://jpp.journals.ekb.eg/article_49768_6f85755a7b220b1daa9bbdc8139fcb40.pdf} } @article { author = {Shahein, M. and Hassan, H. and Abou-El-Hassan, S.}, title = {RESPONSE OF SWEET PEPPER PLANTS TO FERTILIZE BY DIFFERENT ORGANIC FERTILIZERS UNDER PROTECTED AGRICULTURE .}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {809-822}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49775}, abstract = {Plastic house experiment was conducted during the two successive seasons of 2013/2014 and 2014/2015, atorganic farm in El-Aiat district, Giza Governorate, Egypt.This study aims to evaluate the organic production of two hybrids of sweet (bell) pepper using different sources of organic fertilizers under plastic house conditions.Five sources of organic fertilizers (quail, turkey chicken, rabbit manures and compost)as recommended dose of nitrogen for sweet pepper were investigated on vegetative growth,nutritional content, yield component and fruit quality of twohybridsof sweet pepper (Bunjii red fruit and Shunghi yellow fruit).The experimental treatments were arranged in split plot design with three replicates, where two hybrids of sweet pepper treatments were adapted in the main plots while five types of organic fertilizers treatments were randomized in the subplots. Obtained results showed that using compost produced the highest values of plant height, N% of bell pepper plants, as well asthe maximum early, total yield and fruit length. Applying compost and chicken manure produced the highest values of fruit weight, total soluble sold and vitamin C content of pepper fruits. Compost, chicken and turkey manure treatments gave the maximum number of leaves per plant and chlorophyll reading of pepper leaves,percent of P and K in plants,fruit diameter and number of fruits /plant. There were no significant differences among all organic fertilizer treatments infirmness of pepper fruits. Generally, Bunjii hybridwas superior in the most of tested parameters compared to Shunghi hybrid of pepper.}, keywords = {sweet pepper,organic fertilizers,manure,compost,Organic production}, url = {https://jpp.journals.ekb.eg/article_49775.html}, eprint = {https://jpp.journals.ekb.eg/article_49775_3ca43e43944312122f6fe95c83686de8.pdf} } @article { author = {Abdel-Moneam, M. and Ibraheem, F.}, title = {COMPARATIVE SUPERIORITY ESTIMATES OF MORPHO-PHYSIOLOGICAL TRAITS IN NEW MAIZE CROSSES OVER THE BEST COMMERCIAL HYBRIDS UNDER DEFICIENT AND SUFFICIENT SOIL N}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {823-838}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49778}, abstract = {Thirteen new top crosses between B73 inbred line with some American and Egyptian inbred lines were made in 2012 season and evaluated with two commercial varieties (SC Pioneer 3084 and SC 10) under low (30 Kg N/fed) and normal (120 Kg N/fed) nitrogen fertilization rates in 2013 season to study the relative superior over the best commercial varieties and phenotypic correlations for morpho-physiological traits of maize under low and normal N conditions. Results showed that N-treatments mean squares were highly significant for all studied morpho-physiological traits and biological yield per plant. Also, mean squares of crosses were significant or highly significant for all studied traits under both and across N fertilization rates. The N-treatments × crosses interactions mean squares were insignificant for all studied traits, except each of biological yield per plant (Bio.Y/P), relative potential photosynthesis for biological yield (RPPbio.y) and Relative potential photosynthesis for straw yield (RPPs.y), which were highly significant. There were some new crosses manifested significant or highly significant positive or negative (desirable direction) relative superior percentages over both two commercial hybrids (SC Pioneer 3084 and SC 10) under both low and normal Nitrogen fertilization in most studied traits. For biological yield per plant and relative potential photosynthesis for biological yield (RPPBIO.Y), results showed that two crosses (B73X CML103 and B73X TZI8) recorded positive significant relative superior over both commercial hybrids SC Pioneer 3084 and SC 10 under both low and normal N conditions. The phenotypic correlation coefficients varied from moderate to strong correlations between grain yield plant-1 and biological yield plant-1 and most of studied morpho-physiological traits, suggesting that, in general, to increase grain yield plant-1, selection should be carried out for these traits, especially; biological yield plant-1, low ear leaf angle (erect leaf), stem diameter (thick stalks), as well as physiological traits i.e. relative potential photosynthesis for biological yield (RPPBIO.Y) and straw yield (RPPSt.Y) under both low and normal N conditions. The two crosses B73X CML103 and B73X TZI8 exhibit improved morpho-physiological adaptation to low N fertilization and better management of its internal N under normal N rate, and consequently this study recommend these crosses for large scale evaluation and commercial production.}, keywords = {Maize,Relative superior,correlation,N-fertilization}, url = {https://jpp.journals.ekb.eg/article_49778.html}, eprint = {https://jpp.journals.ekb.eg/article_49778_9388ece03a93777a6cdc6c4acf5129df.pdf} } @article { author = {Abdel-Kader, H. and Kassem, M. and Zaky, Hanan}, title = {EFFECT OF HYDRATION TREATMENTS AND MAGNETIZED WATER ON WATER UPTAKE, VASE LIFE AND QUALITY OF THE CUT SPIKES OF GLADIOLUS (Gladiolus hybrida l.) cv. “ROSE SUPREME “}, journal = {Journal of Plant Production}, volume = {6}, number = {5}, pages = {839-852}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.49780}, abstract = {This study was carried out three consequent times during spring of 2013 at the Postharvest Laboratory of Vegetable and Ornamental Plants Department, Faculty of Agriculture, Manso0ura University, Egypt in order to study the effects of hydration treatments and magnetized water on water uptake, relative fresh weight and vase life of cut gladiolus (Gladiolus hybrid L. ) spikes cv. “Rose Supreme “.  Three hydration treatments (room temperature water, 0.1 Tween 20 solution, and warm (40 °C) water) and four water types (tap and magnetized tap water in addition to distilled and magnetized distilled water types) were tested.  The experiment was analyzed as a factorial experiment in a randomized complete block design with 5 replicates.  The experiment was replicated twice (carried out three times), and a combined analysis was carried out to represent the analyzed data. The results showed that hydration treatments and the use of magnetized water affected water uptake, vase life, and fresh weight of cut gladiolus spikes.  As for hydration treatments, warm water and Tween 20 treatments resulted in longer vase life and better increase in fresh weight than room temperature treatment.  The results showed that water uptake was highest in case of Tween 20 solution at the beginning of the vase life and decreased thereafter, but spikes placed in warm (40 °C) water had steadier trend in water uptake throughout the vase life.  As for water types, the use of magnetized distilled water resulted in longest vase life and highest increase in relative fresh weight of gladiolus spikes in addition to steadier trend in water uptake among the four water types. Longest vase life was achieved using both warm magnetized distilled and warm magnetized tap water, followed by magnetized water (either distilled or tap) plus Tween 20.  However, highest increase in fresh weight was achieved using warm magnetized distilled water. Water uptake data showed that best results in longevity and fresh weight increase were related to the trend of water uptake by the flowers throughout the vase life. It is recommended that magnetized water could be used for the preparation of cut flowers preservatives.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_49780.html}, eprint = {https://jpp.journals.ekb.eg/article_49780_e1efb9f3865d371fe9acac1b02fb3385.pdf} }