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Estimation of phenotypic and genotypic stability for some wheat genotypes [electronic resource].

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Hamada, A A

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Language: English Summary language: Arabic Description: p.61-74Other title:

تقدير الثبات المظهري والوراثي لبعض التراكيب الوراثية للقمح [Added title page title]

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Annals of agricultural science, Moshtohor, 2007 v.45 (1) [electronic resource].

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In: Annals of Agricultural Science, Moshtohor 2007.v.45(1)Summary: This investigation was carried out during 2003/2004, 2004/2005 and 2005/2006 seasons at seventeen field experiments. The experiments were performed at Al-Gemmeiza, Moshtohor, Toska and Giza in 2003/2004, 2004/2005 and 2005/2006, Shandweel, Zanoura in 2004/2005 and 2005/2006 and Nubaria in 2005/2006 at Agriculture Research Stations, Agriculture Research Center fields. These sites represent North. South, Middle Delta, Upper Egypt and New Valley to evaluate twenty four genotypes, under seventeen environments and their interaction for number of spikes/m², 1000-kernel weight and grain yield (ardab/f.~.). In addition to estimation of phenotypic and genotypic stability parameters according to Eberhart and Russell (1966) and Tai (1971), respectively. The design used was a Randomized Complete Block. The obtained results may be swnmarized: 1- Environment mean squares were highly significant for num1x:r of spikes/m², 1000 kernel weight and grain yield (ardab/fed.). El (Gemmeiza 2003/2004) environment was superior to the other locations regarding number of spikes/m², while the 1000 kernel weight which recorded the highest mean value in E14 (Moshtohor2005/2006). For grain yield (ardab/fed.), the environments number 11 (Shandweel 2004/2005) and 16 (Shandweel 2005/2006) recorded the highest values followed by environments number 8 (Moshtohor 2004/2005) and 13 (Gemmeiza 2005/2006). 2- Number of spikes/m², 1000-kernel weight and grain yield (ardab/fed.) were significantly affected by genotypes. Based on the over all means genotypes number 2 (Gem. 7) and 6 (Gem.5) gave the highest significant values for number of spikes/m², l000-kernel weight and grain yield (ardab/fed.) compared to the other genotypes while genotype no. 17 (LI5) gave the lowest significant number of spikes/m², l000-kernel weight and grain yield (ardab/fed.). 3- Significant interaction between genotypes and environments were detected for number of spikes/m², l000-kernel weight and grain yield (ardab/fed.).

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This investigation was carried out during 2003/2004, 2004/2005 and 2005/2006 seasons at seventeen field experiments. The experiments were performed at Al-Gemmeiza, Moshtohor, Toska and Giza in 2003/2004, 2004/2005 and 2005/2006, Shandweel, Zanoura in 2004/2005 and 2005/2006 and Nubaria in 2005/2006 at Agriculture Research Stations, Agriculture Research Center fields. These sites represent North. South, Middle Delta, Upper Egypt and New Valley to evaluate twenty four genotypes, under seventeen environments and their interaction for number of spikes/m², 1000-kernel weight and grain yield (ardab/f.~.). In addition to estimation of phenotypic and genotypic stability parameters according to Eberhart and Russell (1966) and Tai (1971), respectively. The design used was a Randomized Complete Block. The obtained results may be swnmarized: 1- Environment mean squares were highly significant for num1x:r of spikes/m², 1000 kernel weight and grain yield (ardab/fed.). El (Gemmeiza 2003/2004) environment was superior to the other locations regarding number of spikes/m², while the 1000 kernel weight which recorded the highest mean value in E14 (Moshtohor2005/2006). For grain yield (ardab/fed.), the environments number 11 (Shandweel 2004/2005) and 16 (Shandweel 2005/2006) recorded the highest values followed by environments number 8 (Moshtohor 2004/2005) and 13 (Gemmeiza 2005/2006). 2- Number of spikes/m², 1000-kernel weight and grain yield (ardab/fed.) were significantly affected by genotypes. Based on the over all means genotypes number 2 (Gem. 7) and 6 (Gem.5) gave the highest significant values for number of spikes/m², l000-kernel weight and grain yield (ardab/fed.) compared to the other genotypes while genotype no. 17 (LI5) gave the lowest significant number of spikes/m², l000-kernel weight and grain yield (ardab/fed.). 3- Significant interaction between genotypes and environments were detected for number of spikes/m², l000-kernel weight and grain yield (ardab/fed.).

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