Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
01
Biomass and some Mechanical Properties for Cupressus sempervirens and Corymbia citriodora Planted in Serabium Sewage Station
637
640
EN
Maha
F. M.
Ismail
Forestry and Timber Trees Department, Horticulture Research Institute, Agriculture Research Center, Giza, Egypt
dr.mahafarouk@yahoo.com
Safaa
A. S.
Ghorab
Forestry and Timber Trees Department, Horticulture Research Institute, Agriculture Research Center, Giza, Egypt
safaaahmed4242@gmail.com
Mona
M.
Abbas
Forestry and Timber Trees Department, Horticulture Research Institute, Agriculture Research Center, Giza, Egypt
monaabbas@yahoo.com
10.21608/jpp.2018.36379
The present study was conducted during 2012 and 2013 in Serabium forest. The aim of this study was to estimate tree biomass and some wood mechanical properties of <em>Cupressus sempervirens</em>L and<em>Corymbiacitriodora</em> Hook. The results showed that <em>C. citriodora</em> was superior over <em>C. sempervirens</em> for most of biomass parameters (total and merchantable height, total volume, green and dry weight and total above-ground biomass) at the age of 5 and 7 years. However, the increment percentage of biomass from 5 to 7 years of age was higher in <em>C. sempervirens</em> than <em>C. citriodora</em>. Mechanical properties obtained from the static bending test, Modulus of Elasticity (MOE), Modulus of rupture (MOR), and Tensile strength recorded higher mean values as the trees get older while they recorded lower mean values from base to top within thetree for both species. Mean values of MOE, MOR and Ten.st. for <em>C. sempervirens</em> at age of 7 years old at DBH were 8128.5, 83.0 and 64.4 N/mm<sup>2</sup>; respectively, while, these values were 15503.5, 158.8 and 149.0 N/mm<sup>2</sup>; respectively for<em> C.citriodora</em>. These results revealed that, wood mechanical properties for <em>C.citriodora </em>were higher than <em>C. sempervirens</em>.
Biomass,Mechanical Properties,wood,Corymbia citriodora,Cupressus sempervirens
https://jpp.journals.ekb.eg/article_36379.html
https://jpp.journals.ekb.eg/article_36379_0a048bd3de99881cfb84876591e4f52b.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
01
A Survey Study on some Halophytes Growing in the Damietta Coastal Area Referring to its Botanical and Ecological Significance
641
648
EN
A.
L.
Wanas
Agricultural Botany Department, Faculty of Agriculture, Damietta University, Damietta, Egypt.
A.
S.
Abd El-hamied
Soil sciences Department, Faculty of Agriculture, Damietta University, Damietta, Egypt.
Eman
M.
Shabka
Agricultural Botany Department, Faculty of Agriculture, Damietta University, Damietta, Egypt.
M.
S.
Serag
Botany and Microbiology Department, Faculty of Science, Damietta University, Damietta, Egypt
mamdouhserag054@gmail.com
10.21608/jpp.2018.36380
A survey was made for ten sites dominated by halophytes and associated species during 2014- 2015. A total of 23 families, 48 genera and 58 species were recorded. Among families, 19 families belong to Dicotyledons of 35 genera and 44 species; 14 species of 11 genera belong to 4 families of Monocotyledons. The largest family was Asteraceae with 11 species followed by Chenopodiaceae and Poaceae with 7 species. Therophytes comprised 48.28%, Chamaephytes 13.79%, Geophytes 12.07%, Hemicryptophytes 10.34% , Phanerophtes 10.34% and Helophytes 5.17% of the associated flora of the salt marsh habitat. The most common halophytic communities growing in the study area dominated by: <em>Arthrocnemum macrostachyum</em> Moric., <em>Halocnemum strobilaceum </em>(Pallas) M. Bieb., <em>Inula crithmoides </em>L., <em>Phragmites australis </em>(Cav.) Trin. ex Steud., <em>Juncus rigidus C. A. </em>Mey<em>,</em><em>Bassia indica </em>(Wight) A.J.Scott<em>, </em><em>Suaeda pruinosa </em>Lange<em>.</em>and<em> Tamarix nilotica </em>(Ehrenb.) Bge<em>. </em>Field study and meetings with local people showed that the associated species of the salt marsh habitat provides a lot of goods and services and many species can be used for its medicinal, nutritional, industrial, ornamental and ecological value. This study showed halophytes species which are growing in the study area, common plant communities and the economic and ecological of it in order to stand on the current situation of halophytes and to maximize its utilization in the near future. The obtained results will be helpful and serve for the conservation and sustainable utilization of plant resources.
Damietta coastal area,halophytes,Life form,economic and ecological values
https://jpp.journals.ekb.eg/article_36380.html
https://jpp.journals.ekb.eg/article_36380_93dc0638cd90c7724ba8541c9078d88d.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
01
Physical and Physiological Effects of Pre- and Post-Harvest Treatments Using Calcium Chloride and Jojoba Oil on the Guava Fruits Storage
649
655
EN
El.
F. A.
El-Dengawy
Department of pomology, Faculty of Agriculture, Damietta University, Egypt.
M.
M.
Niamatt-Allah
Department of Plant Science, Faculty of Science, Damietta University, Egypt.
A.
L. I.
Wanas
Department of Agric. Botany, Faculty of Agriculture, Damietta University, Egypt
A.
M. A.
Saima
Department of pomology, Faculty of Agriculture, Damietta University, Egypt.
10.21608/jpp.2018.36382
The objective of the present research is to find a treatment that preserves the quality of the guava fruits and prolong the marketing period under the room conditions. This study was conducted for two successive seasons 2014-2015 on 18 fruitful and almost identical guava trees at the age of seven years growing in sandy soil at a private commercial guava orchard located in Damietta Governorate - Egypt. The selected trees were subjected to three pre-harvest treatments (3 weeks before harvest time) which involved the foliar spray with tap water (control) or calcium chloride solution at concentration of either 2.5 g/l or 5.0 g/l. After the fruits were harvested at the yellowish green color phase, the fruits of each of the three previous treatments were dipped in water only or 2% Jojoba oil for 5 min and stored under room conditions, at a temperature of (27 ± 1 ° C) and a relative humidity of 70-80%, for 12 days. The effects of the above-mentioned treatments on the physical and physiological characteristics of the fruit quality at the harvest time and at three intervals of 4 days during storage period were studied to get the best treatment for preserving fruits and quality during storage under room conditions. Various fruit quality attributes include the weight loss and decay% of fruits and vitamin C content, acidity%, TSS, total soluble sugars content in fruit juice and also the change in the activity of the peroxidase enzyme in fruit flesh were measured. Most of the tested treatments reduced the weight loss and decay% and the activity of peroxidase in fruit flesh as well as retained the fruits with a significantly higher quality comparing to the control during the storage period until the 12th day. The most effective treatment involved the foliar spray of CaCl<sub>2</sub> before the harvest by 3 weeks followed by dipping the fruits in 2% Jojoba oil after harvest. The fruits of such treatment were more pronounced in their contents of total sugars, vitamin C and TSS/acidity and it also resulted in a reduction in the decay% of fruits to 10.73% after a storage period of 12 days compared to range from 34.2 to 66.6% in other treatments and control.
https://jpp.journals.ekb.eg/article_36382.html
https://jpp.journals.ekb.eg/article_36382_d2988fbed0db427463894177cb3f527b.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
04
Selection for Seed Yield in Cross Population Giza 429 x Giza 40 of Faba Bean
657
662
EN
M.
H.
Haridy
Agronomy Department, Faculty of Agriculture, Al Azhar University (Assiut Branch)
10.21608/jpp.2018.36383
The present investigation was carried out during 2013/2014, 2014/2015 and 2015/2016 successive seasons, at Experimental Farm Faculty of Agriculture (Assiut Branch) Al-Azhar University. The obtained results showed that the expected response to selection was lower than the actual response to selection for the studied traits in respect to the two selection criteria number of pods/plant and seed yield/plant. The results showed that the average plants recorded lower values in F<sub>3</sub> generation and increased gradually in the next generation for the studied traits except, average for days to maturity which recorded higher values in F<sub>3</sub> generation and decreased gradually in the next generation for the two selection criteria. In plant height (cm), number of pods/plant, seed index (100-seed weight gm.) and seed yield/plant (gm) the average of the bulk populations was less than those for selected families in F<sub>3,</sub> F<sub>4 </sub>and F<sub>5</sub> generations, except, for number of days to maturity where in the bulk populations was higher than selected families in F<sub>3,</sub> F<sub>4 </sub>and F<sub>5 </sub>generations for the two selection criteria. Phenotypic and genotypic coefficients of variability recorded higher values in F<sub>3</sub> generation and decreased gradually in the next generation for the studied traits. Positive and significant phenotypic and genotypic correlation coefficients were recorded between seed yield per plant and all the studied traits, except days to maturity it was negative and significant for the two selection criteria. Heritability in narrow sense was high (<50%) for plant height and 100-seed weight in F4 and F5 and varied from low to moderate for the remaining traits.
https://jpp.journals.ekb.eg/article_36383.html
https://jpp.journals.ekb.eg/article_36383_85e2cb7fbf3e75e9b4cb8857e5b0f435.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
04
Effect of Preceding Crop, Rates and Splitting of Nitrogen Fertilizer on Bread Wheat Production and Nitrogen Use Efficiency
663
669
EN
Ayat
B. H.
Gad
Agronomy Dept., Fac. Agric., Assiut Univ., Egypt.
M.
M.
Shalaby
Agronomy Dept., Fac. Agric., Assiut Univ., Egypt.
H.
G.
Hassanein
Soils and water Dept., Fac. Agric., Assiut Univ., Egypt.
E.
A.
Ali
Agronomy Dept., Fac. Agric., Assiut Univ., Egypt.
M.
T.
Said
Agronomy Dept., Fac. Agric., Assiut Univ., Egypt.
10.21608/jpp.2018.36384
A field experiment was conducted at the Agronomy Department Farm, Faculty of Agriculture, Assiut University during 2015/2016 and 2016/2017 seasons to study the effect of preceding crop, rates and splitting of nitrogen fertilizer on bread wheat production and nitrogen use efficiency. The experiment was carried out in randomization complete block design (RCBD) using split-split plot arrangement with three replications. Cropping system (corn-clover-wheat and corn-fallow-wheat) were assigned in main-plots while nitrogen fertilizer rates (56.25, 75.00 and 93.75 kg N/fed) were allotted in sub-plots and splitting doses of nitrogen (two, three and four equal doses) were allocated in sub-sub plots. The obtained data showed that plant height, spike length, number of spikes/m<sup>2</sup>, number of grains/spike, weight of grains/spike, seed index, grain yield, straw yield and nitrogen use efficiency were significantly affected by cropping sequence in favor of planting wheat after clover (fahl berseem) in the two growing seasons except nitrogen use efficiency in the first season. Increasing nitrogen fertilizer rates resulted in significant increase in all previous traits except nitrogen use efficiency trait which was decreased by increasing nitrogen fertilizer rates in both seasons. Moreover, splitting nitrogen rates into four equal doses significantly increased all studied traits as compared to three or two equal splits in the two growing seasons. Also, all interactions had a significant effect on all studied traits in both seasons. The highest mean values of grain yield (27.47 and 28.22 ard/fed in the first and second seasons, respectively) were obtained from the sequence of corn-clover-wheat when received highest nitrogen rate (93.75 kg N/fed) which was applied at four equal doses.
Bread wheat,preceding crop,Nitrogen fertilizer rates and splitting number
https://jpp.journals.ekb.eg/article_36384.html
https://jpp.journals.ekb.eg/article_36384_16cfcbe3193150ca9923afb030a5fb14.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
09
Effect of Foliar Application with Salicylic Acid (Potasal), Mineral Phosphorus Levels and Inoculation Tomato Plant with Soluble Phosphorus Bacteria on Growth, Productivity and Reducing Disease Infect with Tomato Curly Top Virus (TCTV)
671
681
EN
H.
M.
El-Koumy
Vegetable Research Department, Hort. Res. Inst. ARC, Egypt
R.
E.
Knany
Soils, Water and Environmental Research Institute, ARC, Egypt
M.
M.
El-Sawy
Virus and Phitoplasma Department, Plant Disease Inst., ARC, Egypt
10.21608/jpp.2018.36385
The objective of the present study is to investigate effect of phosphorus fertilizer levels and potassium salicylate spraying on tomato growth, yield, quality and curly top virus severity % (TCTV) and incidence. Two field experiments were conducted in a private farm at El-Shamarka, Kafr El-Sheikh district, Kafr El-Sheikh governorate during 2014 and 2015 seasons. Split split plot design was used with four replicates. The main plots were assigned with three phosphorus levels 0, 15 and 30 kg P<sub>2</sub>O<sub>5</sub> fed<sup>-1</sup>. The sub plots were assigned with two potassium salicylate treatments of without potassium salicylate but sprayed by potassium 20% K<sub>2</sub>O 1 liter in 200 liter water fed<sup>-1</sup> and spraying with potassium salicylate 20% K<sub>2</sub>O, 12.5% salicylate at the rate 300 mg L<sup>-1</sup> salicylic of the spraying solution. The sub sub plots were assigned with two biofertilizer treatments of without inoculation and inoculation with phosphate solubilizing bacteria. The results can be summarized as phosphorus at the level of 15 kg P<sub>2</sub>O<sub>5</sub> fed<sup>-1</sup> had the highest values of stem length, number of branches/plant, leaves area/plant, dry weight of shoot/plant and total yield (15.39, 16.15 ton fed<sup>-1</sup>) and vitamin C. While, the phosphorus level of 30 kg P<sub>2</sub>O<sub>5</sub> fed<sup>-1</sup> had the highest values of early yield (4.51 and 4.39 ton fed<sup>-1</sup>) fruit length, fruit diameter, average fruit weight, TSS, acidity, N%, K% in the shoot and fruits. Potassium salicylate spraying had the highest values of stem length, number of branches/plant, leaves area/plant, dry shoot, dry fruit/plant, early and total yield ton fed<sup>-1</sup>, average fruit weight, TSS, acidity, vitamin C and K% in fruits. Phosphate solubilizing bacteria inoculation increased stem length, leaves area/plant, dry shoots and fruit weight, early and total yields, fruit length, fruit diameter, average fruit weight, TSS, acidity and vitamin C, N%, K% in the shoot and fruits. Phosphorus at the level 15 kg P<sub>2</sub>O<sub>5</sub> fed<sup>-1</sup> affected curly top virus (TCTV), decreased disease incidence %, disease severity % and increased reduction infection %. Disease severity comparing to the used rating scale (0-4) all the values of P levels from 12.21 up to 19.95% lies in class one (11-20%), this means that effect of P levels on (TCTV) was low. Potassium salicylate spraying decreased disease incidence %, disease severity % and increased reduction infection %. Comparing with the used rating scale clear that the values of K-salicylate (4.43, 9.75%) lies in the class zero (0-10%), while the control (21.79, 25%) lies in class two (21-30%), this means that K-salicylate spraying was effective in decreasing (TCTV) in tomato.
salicylic acid application,phosphorus fertilizer,biofertilization,tomato curly top virus
https://jpp.journals.ekb.eg/article_36385.html
https://jpp.journals.ekb.eg/article_36385_ef611725d04f1d7f6fbfdbd27c95989b.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
09
Evaluation of some Crop Sequences and Nitrogen Levels on Wheat Productivity
685
688
EN
S.
Gh. R.
Sorour
Agronomy Dept., Fac. Agric., Kafrelshiekh Univ., Egypt.
Sahar
A. M.
Sherif
Sakha, Kafrelshiekh, Field Crop Research Institute, ARC. Egypt
Neama
M. K.
Melad
Sakha, Kafrelshiekh, Field Crop Research Institute, ARC. Egypt
10.21608/jpp.2018.36387
Two field experiments were conducted on clay soil in 2015-16 and 2016-17 seasons at the Experimental Farm of Sakha Agricultural Research Station, Kafr El--Sheikh, Egypt, to exploit the land in the period from harvesting early rice cultivars to grow wheat in suitable date by planting the temporary fodder crops to increase economic returns. The trials studied the response of wheat cv. Giza 171 to some crop sequences systems and nitrogen rates. Each experiment included three rice cultivars (Sakha 101, Sakha 106 and Giza 179) as a preceding crop, three intermediate crop (maize and berseem fahl as mono-cut forage crops as well as fallow land) and three nitrogen rates (50, 75 and 100 kg N fed.<sup>-1</sup>) in wheat. The experimental design was Split Split-plot with three replications. Main plots were assigned to preceding crops (rice cultivars), sub plots to intermediate crops and sub-sub plots to nitrogen rates. Rice cultivars as preceding crop had no significant effect on all studded wheat traits, namely plant height, spikes number m<sup>-2</sup>, spike length, spike weight and grains number spike<sup>1</sup>, 1000-grain weight, grain yield, straw yield and harvest index in both seasons. There was an apparent difference due to intermediate crop in all mentioned traits of wheat, except harvest index in the two seasons. The sequence system of berseem fahl –wheat resulted in a significant increase in plant height, spikes number m<sup>-2</sup>, spike length, spike weight and grains number spike<sup>1</sup>, grain yield and straw yield of wheat compared with maize–wheat and fallow–wheat sequence systems in the two seasons. However, maize–wheat and fallow–wheat sequence systems substantially increased 1000-grain weight of wheat than the berseem fahl–wheat system. Wheat grown after maize or fallow soil was statistically at par in all mentioned treats in both seasons. Plant height, spikes number m<sup>-2</sup>, spike length, grains number spike<sup>1</sup> and straw yield and of wheat gradually increased by increasing nitrogen rate from 50 to 100 kg N fed.<sup>-1</sup>. Spike weight, grain yield and harvest index of wheat was markedly increased by increasing nitrogen rate from 50 to 75 kg N fed<sup>-1</sup>, then those decreased at 100 kg N fed<sup>-1</sup>. Application of 100 kg N fed<sup>-1</sup> produced the lightest 1000-grain weight of wheat in both seasons, while the heaviest ones were obtained from adding 75 and 50 kg N fed<sup>-1</sup> in the first and second seasons, respectively. Grain yield was significantly affected by the interaction between intermediate crop and nitrogen levels. Wheat grown after berseem and received any nitrogen rate was among those having high grain yield in both seasons. It can be concluded that the sequence system of rice-berseem fahl–wheat received 50 kg N fed<sup>-1</sup> could be recommended for optimum grain yield of wheat at Kafr El-Shiekh Governorate. This result indicated that application of berseem fahl as intermediate crop can be saved 50 kg N fed<sup>-1</sup> without reduce grain yield of wheat, in addition to the producing green forage to use in animal food.
https://jpp.journals.ekb.eg/article_36387.html
https://jpp.journals.ekb.eg/article_36387_71e0f05b9ad2772e71e6972e7d444580.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
09
Effect of Nitrogen and Phosphorus Fertilizers Levels on Yields and Technological Characters of Three Flax Cultivars under Saline Soil Conditions
689
693
EN
A.
A.
Leilah
Agronomy Department, Faculty of Agriculture, Mansoura University, Egypt.
M.
H.
Ghonema
Agronomy Department, Faculty of Agriculture, Mansoura University, Egypt.
M.
E.
Kineber
Fiber Crops Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt.
I.
H. M.
Talha
Fiber Crops Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt.
10.21608/jpp.2018.36394
The experiment was carried out at the Farm Experimental of Sakha Agricultural Research Station (El-Hamrawy), Agricultural Research Center (ARC), Egypt through 2015/2016 and 2016/2017 seasons to investigate response of three flax cultivars to nitrogen and phosphorus fertilizers levels on yields and its components as well as technological characters under saline soil conditions. The experiment was done in a split-plot design with three replications. Where, the main-plots were allocated to three flax cultivars <em>i.e. </em>Sakha 3 (fiber flax cultivar), Giza 11 (dual purpose flax cultivar) and Sakha 5 (oil flax cultivar). The sub-plots were allocated to four combination treatments of nitrogen and phosphorus fertilizers <em>i.e. </em>45 kg N + 15.5 kg P<sub>2</sub>O<sub>5</sub>/fed, 45 kg N + 22.5 kg P<sub>2</sub>O<sub>5</sub>/fed, 55 kg N + 15.5 kg P<sub>2</sub>O<sub>5</sub>/fed and 55 kg N + 22.5 kg P<sub>2</sub>O<sub>5</sub>/fed. The results were obtained could be summarized as follows:* Sakha 3 gave the best results other to flax cultivars under studied and produced the maximum valuesof length of technical , fiber yield per plant and per feddan, fiber length, total fiber % and fiber fineness in both seasons. Meanwhile, Giza 11 cultivar significantly superior other studied cultivars and resulted in the maximum values of diameter of stem , straw yield per plant and per feddan, length of fruiting zone, No. of capsules/plant, 1000-seed weight, No. of seeds/plant, seed yield per plant and per feddan in both seasons. However, Sakha 5 cultivar produced the maximum values of seed oil content. *Maximum numbers of all characters studied were showed from fertilizing flax plants with 55 kg N + 22.5 kg P<sub>2</sub>O<sub>5</sub>/fed, except fiber fineness in both seasons. It can be mentioned that mineral fertilizing Giza 11 cultivar with 55 kg N + 22.5 kg P<sub>2</sub>O<sub>5</sub>/fed in order to maximizing seed yield and its components and mineral fertilizing Sakha 3 cultivar with 55 kg N + 22.5 kg P<sub>2</sub>O<sub>5</sub>/fed to maximizing straw and fiber yields under saline soil conditions in Kafrelshiekh governorate, Egypt.
Flax,cultivars,nitrogen levels,phosphorus levels,salinity conditions,yields,technological characters
https://jpp.journals.ekb.eg/article_36394.html
https://jpp.journals.ekb.eg/article_36394_187b1ff6093c975cae81e5c3405cb8c8.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
14
Gene Action and Combining Ability for Seed Yield and its Components in Eight Sesame Genotyps Diallel Crosses
695
702
EN
Ghada
B.
Abd Elaziz
Oil crop Res. Dep., Field Crop Res., Inst., Agric. Res. Cen., Giza
Zeinab
E.
Ghareeb
Central Lab. For Design and Stat. Anal. Res., ARC, Giza. Egypt.
10.21608/jpp.2018.36391
In order to study the combining ability, type of gene action and partition the components of the genetic variance to its constituents of additive and dominance gene effects using half diallel cross for eight genotypes to produce twenty eight sesame crosses. Two field experiments were carried out during two summer growing seasons 2016 and 2017 at Arab El-Awammer Research Station, Assuit, Agricultural Research Center. Results showed that mean squares due to both general (GCA) and specific (SCA) combining ability were highly significant for all characters, indicating the importance of both additive and non-additive gene effects in the inheritance of studied traits. The ratio of GCA/SCA indicated that the largest part of the total genetic variability due to the additive and additive x additive was very important than the non-additive gene effects in the genetic variability for all studied traits. Estimates of GCA for eight parents revealed that P<sub>8</sub> was good combiner for plant height, length of fruiting zone, seed yield/plot and number of days to 50% flowering, while P<sub>1</sub>, P<sub>2</sub> was good combiner for number of capsules/plant, seed yield/plant and 1000-seed weight. Significant SCA effects were observed for some crosses, cross (P1xP5), (P1xP7) and (P2xP3) were the best ones for seed yield/plant. Additive "D" and dominance (H<sub>1</sub> and H<sub>2</sub>) genetic variation were significant for plant height and seed yield/plot. The "D" parameter estimating the additive effect was highly significant and was larger in magnitude than the dominance parameters (H<sub>1</sub> and H<sub>2</sub>) in the all studied traits indicating that the type of gene action is partial dominance. The positive and negative alleles were unequally distributed among the parents. All studied traits had a high values for the broad sense than the narrow sense heritability. Graphical analysis revealed that the regression lines cuts Wr axis above origin point, indicating partial dominance for all the studied characters.
Sesamum indicum L,GCA,SCA,Hybrid vigor,Diallel and Combining ability
https://jpp.journals.ekb.eg/article_36391.html
https://jpp.journals.ekb.eg/article_36391_579b182cd530648764864e2b6647b165.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
18
Pedigree Selection to Improve the Seed Yield in a Segregating Population of Sesame (Sesamum indicum L.)
703
707
EN
Ghada
B.
Abd-ElAziz
Agric. Res. Center, Oil Crops Division, Egypt.
10.21608/jpp.2018.36392
The present investigation was conducted at Arab El-Awammer Agricultural Research Station, Assiut, Egypt during 2012, 2013 and 2014 summer seasons. Two cycles of pedigree selection method were applied on a segregating population of sesame in the F<sub>3</sub>, F<sub>4</sub> and F<sub>5</sub> generations to improve seed yield. The soil of the experiment site is sandy calcareous. Highly significant differences among F<sub>3</sub> families and a sufficient genotypic coefficient of variability (GCV) were obtained for all studied traits. The coefficient of variability decreased from 49.88 % in the F<sub>3</sub> population to 22.68 % in the F<sub>5</sub> for seed yield/plant. Broad sense heritability estimates were high for most traits and reached 93.32 % for seed yield/plant after two cycles of selection. The observed gain in seed yield/plant was significant (P<span style="text-decoration: underline;"><</span>0.01) and accounted for 80.27 % from the unselected bulk sample. All of the families in the F<sub>5</sub> generation showed significant increase in seed yield/plant. It could be concluded that pedigree selection was an efficient method to improve seed yield productivity in the studied population. Selection for productivity could be practiced in the early segregating generations and two cycles of selection were enough to detect the families with high productive. Otherwise, single trait selection accompanied with adverse effects on other traits, and selection index could be recommended to improve seed yield and other traits.
Sesame (Sesamum indicum L.),pedigree selection,genetic advance,segregating generation
https://jpp.journals.ekb.eg/article_36392.html
https://jpp.journals.ekb.eg/article_36392_fa36ac7fc8d7bb68f5656a784d20b26a.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
9
8
2018
08
29
Effect of Water Deficit on Growth, Yield and Quality of Soybean Seed
709
716
EN
A.
R.
Morsy
Food Legume Research Department, Field Crops Research Institute, ARC, Egypt.
Amany
M.
Mohamed
Seed Technology Research Department, Field Crops Research Institute, ARC, Egypt.
E.
A.
Abo-Marzoka
Crop Physiology Research Department, Field Crops Research Institute, ARC, Egypt.
M.
A. H.
Megahed
Seed Technology Research Department, Field Crops Research Institute, ARC, Egypt.
10.21608/jpp.2018.36393
Two field experiments were carried out at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, Egypt, during 2016 and 2017 summer seasons to study the effect of water deficit on growth, yield and quality of seed of 12 soybean genotypes. Water deficit regimes were applied at 15 (recommended regime), 20 and 25 days intervals. The results of combined analysis showed significant effects of soybean genotypes, irrigation regimes and their interactions on the studied traits. Water deficit significantly decreased 100-seed weight and seed yield/feddan in both seasons. Irrigation intervals significantly influenced seed quality traits such as oil, protein, germination percentage and electrical conductivity. The 20 days interval regime resulted in high 100-seed weight and seed yield, while the 25 days interval regime gave lower values in this respect. The percentage of oil and protein of seeds was significantly affected by water deficit, where there was a decrease in seed oil and an increase in protein content. Water deficit significantly decreased dry matter accumulation, leaf area index, crop growth rate, net assimilation rate and chlorophyll content in leaves, while relative water content and proline were significantly increased. The commercial cultivar Giza 111 produced high 100 seed weight (19.84 g) and seed yield (2.183 t/fed), followed by H14L8. On the other hand, seed germination (%) was decreased with increasing water deficit, while seed conductivity (vigor test) was increased. Giza111 showed high seed germination percentage over all irrigation regimes with (87.1%) as an average, whereas Toano gave low seed germination percentage (73.2%). Generally, the genotype Giza111 is the most suitable genotype under the different irrigation regimes, whereas 416937 and DR 101 genotypes could be useful for soybean breeding program for water deficit tolerance.
Soybean,Water deficit,irrigation regimes,Growth,yield,seed quality
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https://jpp.journals.ekb.eg/article_36393_3b2ea7847f48be4330ac9f849873830c.pdf