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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (36): 131-135.doi: 10.11924/j.issn.1000-6850.2013-0235

• 农学 农业基础科学 • 上一篇    下一篇

小豆杂交F2世代结荚高度遗传变异及选择策略

王元栋 雷广军 贾哲涛 邓媛媛   

  • 收稿日期:2013-01-23 修回日期:2013-03-08 出版日期:2013-12-25 发布日期:2013-12-25

Genetic Variation and Selection Strategy of First Pod Height in F2 Generation of Adzuki Bean

  • Received:2013-01-23 Revised:2013-03-08 Online:2013-12-25 Published:2013-12-25

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摘要： 选用不同结荚高度的5个小豆亲本材料进行杂交，研究4个杂交组合F2世代结荚高度性状的遗传变异。结果表明：各组合结荚高度在该世代均有较丰富的变异；含有高结荚亲本的3个组合F2世代，结荚高度均出现个别超高亲材料，遗传力为62.48%~74.49%，可以在早世代进行较严格的选择。从遗传进度值看，3个组合F2世代群体，都具有将结荚高度提高5cm以上的选择空间。相关性研究表明，小豆结荚高度性状表现在不同种植环境条件下，具有较好的相对稳定性；杂交后代结荚高度可在播种后9d~18d通过第一节高度进行间接鉴定。文章讨论了播种技术环节和施肥对小豆结荚高度的影响。

关键词: 土生空团菌, 土生空团菌

Abstract: To explore the genetic variation of the first pod height in F2 generation of four hybrid combination, five parent materials of adzuki bean with different first pod height were used. The results showed that abundant variations existed in this generation of each combination; Small part of materials of higher first pod height were found in F2 generation of three combinations which has high first pod height parent. More rigid selection in the early generation could been conducted for high heritability of 62.48%-74.49%. In terms of their genetic advance, The first pod height had the potential to raise 5cm in F2 generation of this three combination. The results also showed that the first pod height had good stability under different environmental conditions. Though the trait of first section height in the hybrid generations, indirect evaluation to this trait could been used during 9-18 days after seeding. This paper discussed the influences of the fertilization and the links of sowing technology on the first pod height.