摘要
利用弱休眠水稻品系‘996’和强休眠性品系‘4628’杂交,构建包含286个株系的重组自交系(recombinant inbred lines,RIL)群体,连续2年(2011、2012年)以当年收获的该群体种子的发芽率为指标,进行种子休眠性检测,并采用主基因+多基因混合遗传模型对早籼稻休眠性进行遗传分析。结果表明,在2011年试验中,‘996’ב4628’的重组自交系群体休眠性符合4对主基因(其中3对基因加性效应相等)–多基因加性上位性模型;在2012年试验中符合4对主基因(其中2对基因加性效应相等)–多基因加性上位性模型。2年试验结果均表明,该群体种子休眠性遗传符合4对主基因+多基因遗传模式,并且以主基因遗传为主。
Analysis of genetic model on seed dormancy （SD） was conducted with a set of recombinant inbred lines （RILs） derived from a rice cross of a variety named ＇996＇ with weaker SD and a variety named ＇4628＇ with stronger SD. The seed dormancy in two consecutive years was measured with the germination rate from the population seed harvested in that respective period. Genetic analysis showed that seed dormancy in the crossed generation of ＇996＇ and ＇4628＇ was controlled by four major genes, three equal additive-polygenes additive-epistasis model in 2011, while it was controlled by two of major genes equal additive-polygenes additive epistasis model in 2012. The test results in two consecutive years showed that the heredity of seed dormancy was controlled by four major genes plus polygenes, which mainly governed by major genes.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第3期231-235,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
教育部创新团队发展计划项目(IRT1239)
湖南省高校科技创新团队支持计划项目
关键词
早籼稻
休眠
遗传模型
重组自交系
early season indica rice
seed dormancy
genetic model
recombinant inbred lines
