摘要
研究了由^(60)Co-γ辐照诱导的水稻抗白叶枯病突变体培育而成的辐竹_2及辐竹_2选两个品种的遗传方式,证明该两个品种的抗性遗传受多基因控制。根据超亲遗传现象,判明供试抗源的基因分布为非集中分布型。对辐照突变体筛选的有关问题及突变体的利用途径开展了讨论。并对这类多基因遗传的突变体在抗病育种中的利用价值作出较为肯定的评价。
A study on inheritance pattern of two rice cultivars 'Fuzhu 2' and 'Fuzhu 2 Selection' , derived from a bacterial blight-resistant mutant induced by 60Co-γ irradiation was made. It proved that resistance of the two cultivars was conditioned by multiple genes. Based on traasgressive inheritance, the gene distribution pattern of resistant sources tested was identified as a decentralized one Problems relevant to screening mutants derived from irradiation and utilization approach to these mutants were discussed. In addition, the utilization value of such mutants with multiple-gene inheritance pattern in disease resistance breeding program were assessed positively.
出处
《华南农业大学学报》
CAS
CSCD
1990年第2期1-8,共8页
Journal of South China Agricultural University
关键词
水稻
白叶枯病
辐照诱导
遗传
Rice, Irradiation-induced mutation
Bacterial blight resistance
