【摘要】 采用 1 973～ 1 996年黄淮棉区棉花品种区域试验的历史资料来研究我国黄淮棉区棉花品种产量组分的改良对产量的影响。结果表明 ,产量从750 kg· hm- 2 提高到 1 2 0 0 kg· hm- 2 主要是通过株铃数的改良来实现的 ;产量从 1 2 0 0 kg· hm- 2 提高到 1 42 5kg· hm- 2 主要是通过衣分的提高来实现 ;铃重的改良对产量的提高贡献不大。当前育种策略和选择重点是在一定铃重的基础上 ,加强对株铃数和衣分的选择更多还原

【Abstract】 The paper was to study the effect of yield component improvements Historic data of Huang Huai Regional Trials from 1973 to 1996 were analysed. Results indicated that the yield increase from 750 kg·hm\+\{ 2\} to 1200 kg·hm\+\{ 2\}was mainly accounted for the improvements of bolls per plant. The yield increase from 1200 kg·hm\+\{ 2\} to 1425 kg·hm\+\{ 2\} was mainly accounted for the improvements of lint percent, while the improvement in boll size has played a relatively minor role in yield increase. Current breeding strategy and selection emphases were to select the variety which has a high bolls per plant and high lint percent with an appropriate level of boll size.更多还原