Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190401Effect of Sowing Dates on Yield and Yield Attributes of Rice Genotpes3353423626610.21608/jpp.2019.36266ENMervat M. A.OsmanRice Research Section, Field Crops Research Institute, ARC, Giza, EgyptJournal Article20190323In order to investigate the effect of sowing dates on rice yield and its components a field experiment was carried out in Randomized Complete Block Design (RCBD) with three replications at the Experimental Farm of Sakha Agricultural Research Station, Sakha, Kafr EL-Sheikh Egypt. 14 rice genotypes were tested at different sowing dates, April 1<sup>st</sup>, April 15<sup>th</sup>, May 1<sup>st</sup> and May 15<sup>th</sup> during the two successive rice seasons 2017 and 2018. The studied characters were i.e., flag leaf area, chlorophyll content, plant height, number of panicles per hill, number of filled grains per panicle, number of unfilled spikelets per panicle, 1000-grain weight (g), grain yield (t/ha), number of days from sowing to heading and growth degree days. Analysis of variance indicated that rice genotypes were significantly different for all the studied traits. The highest values of grain yield and most of the studied characters were observed under April 15<sup>th</sup> followed by May 1<sup>st </sup>sowing dates. Sakha108 and GZ6903-1-2-2-1 produced the highest grain yield followed by IR77510-68-1-3-3.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190403The Role of Grain Priming and its Duration on Wheat Germination and Seedling Growth3433493626710.21608/jpp.2019.36267ENA. B.MohamedAgric. Botany Dept., Fac. Agric., Mansoura Univ., EgyptM. F.El-BannaAgric. Botany Dept., Fac. Agric., Mansoura Univ., EgyptS. FaroukAgric. Botany Dept., Fac. Agric., Mansoura Univ., EgyptM. A.KhafagyAgric. Botany Dept., Fac. Agric., Mansoura Univ., EgyptJournal Article20190328This study was designed to investigate the effect of different grain priming methods on germination and seedling vigour of wheat cultivar (Gemmiza 9) was performed. Grains were primed for 8, 16 and 24 hours in 13 priming media (water, polyethylene glycol 6000 at 2.5, 5, 7.5 %; CaCl<sub>2</sub> at 250, 500, 1000 ppm; ascorbic acid (AsA) at 25, 50, 100 ppm; salicylic acid (SA) at 50, 100, 150 ppm) beside dry grain as a control. In general, it was observed that a priming duration of 24 hr gave the highest values of all duration studied. In addition, results indicated that all grain priming in any priming materials significantly increased seedling vigour index (SVI) represented by germination %, length of seedling and fresh and dry weights of seedling. In most cases, SA at 100 ppm was the most effective in this regard. The greatest germination % was obtained due to 7.5 % PEG; 500 ppm CaCl<sub>2</sub>; 100 ppm AsA and 100 ppm SA. The highest seedling length was obtained due to 2.5 % PEG; 250 ppm CaCl<sub>2</sub>; 50 ppm AsA and 100 ppm SA. In addition, seedling dry weight was highest due to 7.5 % PEG; 1000 ppm CaCl<sub>2</sub>; 50 ppm AsA and 100 ppm SA. The highest SVI values were obtained due to 2.5 % PEG; 250 ppm CaCl<sub>2</sub>; 50 ppm AsA and 100 ppm SA. These results indicate that priming of grains had a significant effect to promote the germination and seedlings growth of wheat.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190404Response of Broccoli to Irrigation Water Quantities and Foliar Application with Antitranspirants and Humic Acid as Soil Amendement on Yield, Quality and some Antioxidant3513593626810.21608/jpp.2019.36268ENS. T. M. El-AfifiVegetable and Floriculture Dept., Faculty of Agriculture, Mansoura University, EgyptAmal A.El-AwadyVegetable Research Dept., Horticulture Research Institute, Agriculture Research Center, Giza, EgyptAmira A. A.SalemVegetable Research Dept., Horticulture Research Institute, Agriculture Research Center, Giza, EgyptJournal Article20190325This study was conducted at El-Baramoon Research Station, Dakahlia Governorate, Egypt during the growing seasons of 2015 and 2016 to study the effect of three water quantities (800.34, 1600.73 and 2400.40 m<sup>3</sup>/fed as common used treatment) and some antitranspirants, <em>i.e</em>., kaolin solutions 4%; as aluminum silicate, calcium carbonate (6%) as well as humic acid as potassium-humate (80% humic acid, 11-13% K<sub>2</sub>O) and their interactions on growth, yield, quality and some antioxidants of broccoli. The second level of water irrigation (1600.73 m<sup>3</sup>/fed) with application of kaolin or humic acid or the first level (2400.40 m<sup>3</sup>/fed) with application of kaolin or humic acid had the most significant effect of plant height, number of leaves/plant, dry weight/plant, leaves area/plant, central and lateral head weights/plot, total head yield/plot and total head yield/fed in both seasons of study, without significant differences between them. Increasing irrigation quantity from 800.34 to 2400.40 m<sup>3</sup>/fed increased broccoli growth characters in the both seasons. No significant differences were found in vegetative growth and yield attributes betwee water quantities of 1600.73 and 2400.40 m<sup>3</sup>/fed in both seasons. Kaolin or humic acid led to significant increase in most vegetative growth and yield traits compared to control. The third level of irrigation water quantity (800.34 m<sup>3</sup>/fed) with kaolin application had significant increases in antioxidants (vitamin C, anthocyanin, phenolic compounds and total flavonoids content). On the other hand, the application of high level of irrigation water quantity (2400.40 m<sup>3</sup>) and application of kaolin had a significant effect on protein content, in both seasons. The low level of irrigation water (800.34 m<sup>3</sup>) significantly increased the antioxidants content and decreased protein content in both seasons. Application of kaolin was significantly increased in all antioxidants and protein content in the both seasons in comparison with other treatments. Generally, it could be concluded that kaolin or humic acid application under water quantity of 1600.73 m<sup>3</sup>/fed was the best combination for broccoli production aimed at maximum water use efficiency in this study. This in turn encourages such amendments to reduce water consumption by 33.3%.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190415Effective and Ineffective of some Resistance Genes to Wheat Leaf, Stem and Yellow Rust Diseases in Egypt3613713626910.21608/jpp.2019.36269ENW. M.El-OrabeyPlant Pathology Research Inst., ARC, Giza, EgyptI. S.ElbasyoniDepartment of Crop Science, Damanhour University, EgyptS. M.El-MoghazyPlant Pathology Research Inst., ARC, Giza, EgyptM. A.AshmawyPlant Pathology Research Inst., ARC, Giza, EgyptJournal Article20190401One hundred and five wheat genotypes; 38 wheat leaf rust monogenic lines, 46 stem rust monogenic lines and 17 yellow rust monogenic lines, thee commercial wheat cultivars; Sakha 95, Misr 3 and Gemmeiza 11 and the highly susceptible variety Morocco were evaluated for their adult plant resistance and stability of resistance to rust diseases under different field conditions at Sadat City and Elbostan for three successive growing seasons i.e. 2016/2017, 2017/2018 and 2018/2019. Depending on the obtained results, differences between environments, genotypes and the interaction between environments and genotypes were highly significant for all studied characters. These results confirmed that, there are wide variations between genotypes. The wheat genotypes under study were classed into three classes based on the infection type. The first class included the most effective genotypes which included <em>Lr</em> 17,<em> Lr</em> 18, <em>Lr</em> 21, <em>Lr</em> 28 and Misr 3 for leaf rust, <em>Sr</em> 2,<em> Sr</em> 24, <em>Sr</em> 32, <em>Sr</em> 33, <em>Sr</em> 36, <em>Sr</em> 38, <em>Sr</em> 39 and Misr 3 for stem rust and <em>Yr</em> 1, <em>Yr</em> 5, <em>Yr</em> 10, <em>Yr</em> 15, <em>Yr</em> SP, Misr 3 and Sakha 95 for yellow rust. The second class was genotypes of differential resistance and the third class included ineffective genotypes. Stability factors during the three growing seasons at the two locations confirmed that, nine wheat monogenic lines; <em>Lr</em> 28, <em>Lr</em> 22a, <em>Lr</em> 14b,<em> Sr</em> 20, S<em>r</em> 25, <em>Sr</em> 31, <em>Sr</em> 9e, <em>Sr</em> 12and<em> Yr</em> 17 were widely adapted and stable in their resistance.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190418Studies on the Improvement of Date Palm Productivity Using Different Methods of Pollination and Fruit Thinning Levels3733773627010.21608/jpp.2019.36270ENMokhtar M.ShaabanPomology Dept., Fac. Agric., Assiut Univ., Assiut, EgyptE. F. S.AhmedDate palm Res. & Develop. Center Lab., Agric Res. Center, Giza, EgyptM. M.El-AkkadPomology Dept., Fac. Agric., Assiut Univ., Assiut, EgyptJournal Article20190406Pollination and thinning are basic procedures of date palms in terms of their impact on fruit development, quality and yield, as well as the organization yearly tree bearing. The development of pollination technology, which leads to an acceptable level of fruit set with the use of small amount of pollen grains and without a further need for thinning, is necessary to improve the productivity of date palms, especially under arid conditions. This examination was done on Saidy date palm for both progressive seasons 2017 and 2018 at El-Kharga Oasis, New Valley Governorate, Egypt. The impact of pollen grain suspension at 0.5, 1.0 and 1.5 g blended with starch 5.0 g, dust pollen at 10, 12.5 and 16.7% as well as fruit thinning at 10, 20 and 30% on fruit retained, fruit weight/bunch, yield and fruit quality were examined. The outcomes announced that utilization pollen grains suspension at 1.0 g + 5.0 g starch and dusting at 10% as well as the fruit thinning at 30% had a decrement level of fruit weight/bunch about 9.64, 9.99 and 9.64% compared to the traditional treatment, respectively. The most elevated estimations fruit weight (11.28, 11.44 and 11.22 g) were obtained from spraying pollen grains suspension at 0.5 g + 5.0 g starch, dusting at 10% and removing 30% of fruit, which led to 20.51, 22.22 and 19.87% increment over the traditional treatment as average of the two seasons, respectively. Likewise, utilizing pollen grains suspension at 0.5 g or pollen dusting at 10% and removing 30% of fruit gave the most elevated values of TSS and sugar contents, while, utilizing the traditional pollination gave the least values. We can conclude from that pollination by either pollen grains suspension at 1.0 g or dusting at 10% should be possible to acquire an extensive yield with great quality, increase the efficiency of the pollination process and combine the two methods of pollination and fruit thinning at the same time in their effect on the productivity of date palms.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910420190430Response of Onion to Foliar Spraying with some Nutrients under Different Rates of Npk Fertilizers3793843627110.21608/jpp.2019.36271ENA. G.MohamedOnion Research Department, Field Crops Research Institute, Agriculture. Research Center, Giza, EgyptA. M.El-DamaranyDepartment of Horticulture, Faculty of Agriculture, Sohag University, EgyptR. A.MareyOnion Research Department, Field Crops Research Institute, Agriculture. Research Center, Giza, EgyptS. GebrilDepartment of Horticulture, Faculty of Agriculture, Sohag University, EgyptJournal Article20190421This study was conducted in seasons of 2014/2015 and 2015/2016 at Shandaweel Agriculture Research Station, Sohag, Egypt. The experimental design was randomized complete block design (RCBD) with three replications. The treatments were (1) Non-fertilization, (2). Control treatment (120, 45, 25 kg/fed NPK), (3). Humic acid+ 100% NPK, (4). Potassin +100% NPK, (5) Calfruit + 100% NPK, (6) Humic acid+ Potassin +100% NPK, (7) Humic acid+ Calfruit + 100% NPK, (8) Potassin + Calfruit + 100% NPK, (9) Humic acid+ Potassin + Calfruit, (10). Humic acid+ Potassin + Calfruit + 25% NPK, (11) Humic acid+ Potassin + Calfruit + 50% NPK (12) Humic acid+ Potassin + Calfruit + 75% NPK. Application of Pot.+Cal.+HA+75%NPK, produced the highest values of plant height at 90 and 120 DAT in both seasons and plant dry weight, bulb dry weight at 120 DAT in both seasons. While, Non-fertilization treatment gave the lowest values of plant height, bulb diameter, fresh plant weight, leaves fresh weight, bulb fresh weight, plant dry weight, leaves dry weigh, bulb dry weigh at 90 and 120 DAT and number of days to maturity in the two seasons. Generally, treatment of Pot.+Cal.+HA+75% NPK attained the highest values of total bulbs yield, bulb diameter, TSS%, D.M% in both seasons.