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Temporal variation in phenological characteristics, grain yield, and yield components of spring bread wheat (Triticum aestivum L.) cultivars released in Iran between 1952 and 2009 | ||
| Crop Breeding Journal | ||
| مقاله 6، دوره 4، شماره 1، تیر 2014، صفحه 57-64 اصل مقاله (626.36 K) | ||
| شناسه دیجیتال (DOI): 10.22092/cbj.2014.109673 | ||
| نویسندگان | ||
| M. Esmaeilzadeh Moghaddam* ؛ M. R. Jalal Kamali؛ Z. Anet؛ M. Roshani؛ M. Ghodsi | ||
| Seed and Plant Improvement Institute, Karaj, Iran. | ||
| چکیده | ||
| To estimate genetic progress and the variation in agronomic characteristics and phenology in 15 bread wheat (Triticum aestivum L.) cultivars released in Iran between 1952 and 2009, a field experiment was conducted at the Seed and Plant Improvement Institute’s Research Field Station in Karaj, Iran, in the 2009-2010 and 2010-2011 growing seasons. Temporal variation trends of the measured traits revealed that grain yield and related traits have increased in more recently released cultivars, though thousand-grain weight has changed only slightly compared with older cultivars released during 1952-2009. Number of days to heading and to anthesis did not change in modern cultivars, but grain-filling period and days to physiological maturity did increase. Grain number spike-1 and rate of grain growth increased but plant height decreased in more recently released cultivars. | ||
| کلیدواژهها | ||
| Anthesis؛ grain growth rate؛ physiological maturity؛ thousand-grain weight | ||
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آمار تعداد مشاهده مقاله: 547 تعداد دریافت فایل اصل مقاله: 507 |
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