水稻紫黑米品种的育性基因分析

Genetic analysis for fertility genes in purple black variety of rice (Oryza sativa L ):

通过对Ｆ１和Ｂ１Ｆ１各代花粉不育度的遗传分析，证明黑珍米对珍汕９７Ａ和协青早Ａ的恢保关系不同，前者受隐性不育基因控制，后者受一对部分恢复基因控制。不育株的柱头外露率比可育株低７８５％，变异较大，可通过选择提高，果皮颜色与花粉不育度无相关性。本文还就转育紫黑米不育系的可行方案进行了讨论。

A genetic analysis of the pollen sterility of the plants in F 1 and B 1 F 1 populations shows that the restoration ability of Heizhenmi for Zhenshan 97A with WA type was controlled by the recessive sterile gene, and the restoration ability of Heizhenmi for Zieqingzao A with dwarf abortion type was controlled by one pair of the partially restorer gene Average stigma exsertion ratio of sterile plants was lower 7 85% than that of fertile plants Because variation of stigma exsertion ratio of sterile plants was large, it is possible to increase stigma exsertion ratio of sterile plant by selecting There was no correlation between peel color and pollen sterility Finally, an available program for transfering of purple black sterile and maintainer lines was discussed