Selection for Increased Lint Yield and Correlated Responses in Upland Cotton, Gossypium hirsutum L.1
Selection for Increased Lint Yield and Correlated Responses in Upland Cotton, Gossypium hirsutum L.1
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DOI：
10.2135/cropsci1967.0011183x000700060024x
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发表时间：
1967-11
期刊：
影响因子：
2.3
通讯作者：
P. Miller;J. O. Rawlings
中科院分区：
文献类型：
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作者：
P. Miller;J. O. Rawlings
对高地棉（Gossypium hirsutum L）进行了3轮提高皮棉产量的轮回选择。第三轮选择的产量超过基础群体29.7%。对选择的响应是线性的，并且预测在另外的循环中以大致相同的增益速率继续。对产量选择的相关反应，观察到的大多数测量的性状。随着选择增加皮棉产量，衣分、每铃种子数、早熟性、纤维伸长和纤维粗度也同时增加。棉铃大小、种子大小、纤维长度和强度下降。每粒种子的皮棉重量变化不大。预测和观察到的选择反应之间普遍存在密切的一致性。这表明，显性效应缺乏或相对次要。加性遗传效应似乎在这一群体中占主导地位，尽管不能排除加性效应。
Three cycles of recurrent selection for increased lint yield in Upland cotton (Gossypium hirsutum L) have been completed. Yield of the third cycle selections exceeded that of the base population by 29.7%. Response to selection was linear and is predicted to continue at approximately the same rate of gain for an additional cycle. Correlated responses to selection for yield were observed for the majority of the unselected traits measured. As selection increased lint yield, simultaneous increases were observed for lint percentage, number of seed per boll, earliness, fiber elongation, and fiber coarseness. Boll size, seed size, and fiber length and strength decreased. Weight of lint per seed showed little change. There was generally close agreement between predicted and observed responses to selection. This suggests that dominance effects were lacking or of relatively minor importance. Additive genetic effects would appear to predominate in this population, although additive ✕ additive effects cannot be excluded.