| Titles |
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English :
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stability parameters of some bread wheat genotypes (triticum aestivum) in new and old lands under upper egypt conditions
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Arabic :
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قياسات الثبات لبعض التراكيب الوراثية لقمح الخبز في الأراضي القديمة والجديدة تحت ظروف بيئية مختلفة فى مصر العليا
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| Abstract |
This investigation was conducted on forty bread wheat genotypes of diverse origin that were chosen for their tolerance to abiotic stresses (heat tolerance) grown under eight environments (the combinations of 2 seasons x 2 planting dates x 2 locations i.e. Assiut (El-Kosia district) and Kcom-Ombo Res. Station during two successive seasons 2003/2004 and 2004/2005, to evaluate their performances and the their stability. The studied traits included days to heading, days to physiological maturity, number of kernels/spike, 1000-kernel weight and grain yield t/ha. Wheat genotypes showed different responses to environments. Delaying sowing date reduced number of days to heading, maturity date, number of kernels/spike, 1000-kernel weight (g) and grain yield t/ha by an average of 13.65, 13.47, 25.77, 27.31 and 28.96%, respectively, compared with the recommended sowing date.
The joint regression analysis of variance indicated highly significant differences among genotypes for all the studied characters. The heterogeneity of linear responses and remainder sums of squares were highly significant for all the studied traits. The regression coefficients were positively correlated with the mean performance, indicating that high yielding genotypes had generally, positive βi values and revealed a good response to the improving environments. However, four genotypes (No. 5, 8, 9 and 20) could be considered the best, since they had higher grain yield and acceptable stability. Such genotypes could be used in a breeding program because they had high yielding capacity and high stability performance.
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| Publication year |
2006
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| Pages |
223-246
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| Availability location |
معهد بحوث المحاصيل الحقلية 9- شارع الجامعة- الجيزة
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| Availability number |
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| Organization Name |
Field Crops Research Institute (FCRI)
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| serial title |
المجلة المصرية لتربية النبات:
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| Author(s) from ARC |
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| Agris Categories |
Agriculture - General aspects
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AGROVOC
TERMS |
Soft wheat.
Triticum aestivum.
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| Publication Type |
Journal
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