摘要
从轮选可育株衍生的后代中发现一个雄性不育株，即P740不育材料．在P740不育材料第1、2、3次姊妹交后代中，可育株与不育株的分离比分别符合4：1、7：5和15：13．在第2次姊妹交后代中可育株产生的40个株系中，7个株系的行性分离比是15：1，33个株系是3：1，二者约分别占1／7和6／7。以上结果表明，P740是一个双隐性基因控制的核雄性不育材料．本文提出了计算隐性核不育材料姊妹交后代育性分离比率的公式．
A male sterile material was found in the progeny derived from a fertile plant in the population of recurrent selection. The ratios of fertile to sterile plants in three sib-mating of the male sterile material with fertile plants were to 4: 1, 7: 5 and 15: 13, respectively. In the 40 plant lines derived from the fertile plants of second sib-mating population, 33 lines approximated to the segregation ratio of 3(fertile):1(sterile), and remaining 7 lines were 15(fertile): 1(sterile). The results showed that P740 male sterility is a double recessive nuclear male sterile material. A genetie pattern for calcuiation of fertile segregation in sib-mating progenies of recessive nuclear male sterile material was advanced in this paper.
出处
《遗传》
CAS
CSCD
北大核心
1996年第6期9-11,共3页
Hereditas（Beijing)
基金
国家攀登计划
关键词
小麦
雄性不育
隐性基因
Wheat, Male-sterility, Recessive genes
