| 摘要: |
| 对不同地理区域、不同粒形的26个亲本、41个 F_1组合、9个 F_2群体的研究表明:①镰刀形谷粒属于隐性核遗传;②粒形受少数几个主基因及许多修饰基因控制。谷粒的镰刀形是由多个修饰基因逐步发生隐性突变积累而成,其中主要是粒长的突变;③西亚的镰刀谷的分化比东亚梗不是在时间上更晚就是在程度上更深;④宽大粒形也可能是后分化类型;⑤在东亚,粒形有随纬度升高而变短、宽的趋势。 |
| 关键词: 镰刀形谷 粒形 遗传 演化 |
| DOI： |
| 投稿时间：1991-01-31 |
| 基金项目: |
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| Preliminary Study on Inheritance and Evolution of Sickle-shaped Grain in Rice(Oryza sativa L.) |
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| Abstract: |
| Twenty-six rice cultivars from various regional areas and grain shapes,fourty-one F_1 generations and nine F_2 populations was studied.The results indicated that 1:the heredity on shape of sickle-grain belongs in rec- cessive nuclear inheritance;2:the inheritance of grain shape is under control of a few master genes and many modifiers,and the sickle shaped grain might evolved from the accumulation in reccessive mutations of many modifiers,speci- ally in the length of grain;3:the evolution of sickle-shaped r... |
| Key words: sickle-shaped rice grain shape inheritance evolution |
