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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38 d至45 d达到高峰;控制铃壳质量的基因表达分别在铃龄17 d至24 d和铃龄38 d至45 d出现两个高峰;影响铃重性状的基因分别在铃龄17 d至24 d和铃龄31 d至38 d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。
Applying the additive-dominance genetic model and conditional and non-conditional statistical analysis methods, the dry matter mass of six high-quality Upland cotton cultivars (lines) and their 30 F1 combinations the study. Unconditional ANOVA showed that the quality of fruit branches was mainly controlled by the additive effect in the period of increasing volume of boll, and the dominant effect was mainly controlled by the dominant effect in the internal filling period. The quality of the bell-shaped shell was dominated by additive effect at different developmental stages. The former mainly controlled by the dominant effect in the middle and later, mainly in the additive effect. Conditional genetic analysis showed that the net genetic effect on the quality of fruiting branches reached a peak at 38 d to 45 d of boll height. The gene expression controlling the boll quality appeared at 17 d to 24 d and 38 d to 45 d The highest gene expression peaked at 17 and 24 days of age and 31 and 38 days of age respectively. Genetic correlation analysis showed that the quality of bell-shaped shell at different developmental stages was positively correlated with the final boll weight.