رسالة جامعية :استجابة معدل التلقيح الخلطي ومحصول وجودة تقاوي الأرز الهجين لميعاد الزراعة ومنظمات النمو

3:45 ص المكتبة الزراعية الشاملة

رسالة جامعية :استجابة معدل التلقيح الخلطي ومحصول وجودة تقاوي الأرز الهجين لميعاد الزراعة ومنظمات النمو

المؤلف : حسن شحاتة حسن حمد

تاريخ النشر : 2006

عدد الصفحات 156

درجة الرسالة ماجستير

A study was conducted in cooperation between the Department of Crops, Faculty of Agriculture, Kafr El-Sheikh. Two field experiments were conducted at the ARC research farm at Sakha ARC - Egypt during the 2003 and 2004 seasons. The experiments were aimed at studying the effect of the date of cultivation and treatment with growth regulators treated with gabriel chickpeas with boric chickpea for two strains of male cytoplasmic sterility on the characteristics of growth, yield, quality of seeds and quality of seeds. The resulting gesture of camel use. The subjects under study included two sterile male strains of cytoplasma (IR 69625 A) and (IR 58025 A) as mother and tribute strains 178 as a recombinant strain to produce seed seed

The first was for two promising hybrids, namely Sakha 2034 and Sakha 2025. Experiments of production and seeding of the first generation were conducted in the middle of the seed production field for the Giza 178 variety to take advantage of the distal isolation. The experiment was designed by the split-split-plot design method in three replicates, the main pieces were the main-plot. Specific to sterile strains while cultivation dates were tested in sub-plot and growth regulators added in sub-sub-plots, which included nine treatments of gibberellin with boric acid as follows: 300 g gibberellin, 300 g gibrillin + 0.5% boric acid. , 250 gm of gibberellin

250 gm gibberellin + 0.5% boric acid, 250 g gibberellin, 250 g gibberellin _ 5.0% boric acid, 200 g gibberellin, 200 g gibberellin + 0.5% boric acid, 150 g gibberellin, 150 g gibberellin per hectare + 0.5% boric acid where The addition was done in two sprays and there was a final dose without any growth regulators (comparison). The seed rate used was 20 kg / ha (15 kg of each strain of the two strains IR 6925 A and IR 58025 A + 5 kg brief 178), then they were soaked in water for 24 hours and infused for 48 hours to aid in early germination. 

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