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棉花学报  2012 

高品质陆地棉铃-叶系统干物质质量的发育遗传研究

DOI: 1002-7807(2012)02-0140-07, PP. 140-146

Keywords: 陆地棉,高品质,铃-叶,发育遗传,干物重,遗传方差,条件遗传方差

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Abstract:

应用加性-显性发育遗传模型及条件与非条件的统计分析方法,对6个高品质陆地棉品种(系)及其30个F1组合的伏桃与对位果枝叶的干物质质量进行了研究。非条件方差分析表明,果枝叶质量在棉铃体积增大期主要受加性效应控制,内部充实期主要受显性效应控制;铃壳质量在不同发育时期均以加性效应为主;铃重在前中期主要受显性效应控制,后期以加性效应为主。条件遗传分析表明,影响果枝叶质量的净遗传效应在铃龄38d至45d达到高峰;控制铃壳质量的基因表达分别在铃龄17d至24d和铃龄38d至45d出现两个高峰;影响铃重性状的基因分别在铃龄17d至24d和铃龄31d至38d出现两个表达活跃的高峰,此后基因的表达量急剧下降。遗传相关分析表明不同发育时期的铃壳质量均与最终铃重成极显著的加性正相关。

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