Temporal variation in phenological characteristics, grain yield, and yield components of spring bread wheat (Triticum aestivum L.) cultivars released in Iran between ۱۹۵۲ and ۲۰۰۹
Publish place: Crop Breeding Journal، Vol: 4، Issue: 1
Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_CBJOU-4-1_006
تاریخ نمایه سازی: 13 آذر 1402
Abstract:
To estimate genetic progress and the variation in agronomic characteristics and phenology in ۱۵ bread wheat (Triticum aestivum L.) cultivars released in Iran between ۱۹۵۲ and ۲۰۰۹, a field experiment was conducted at the Seed and Plant Improvement Institute’s Research Field Station in Karaj, Iran, in the ۲۰۰۹-۲۰۱۰ and ۲۰۱۰-۲۰۱۱ 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 ۱۹۵۲-۲۰۰۹. 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-۱ and rate of grain growth increased but plant height decreased in more recently released cultivars.
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Authors
M. Esmaeilzadeh Moghaddam
Seed and Plant Improvement Institute, Karaj, Iran.