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运用细胞突变体离体筛选技术 ,以感白叶枯病的杂交稻恢复系“明恢 6 3”的成熟胚为外植体 ,诱导筛选育成抗白叶枯病突变品系“HX- 3”。经过 9代的遗传稳定性分析和遗传研究 ,结果表明其抗病性遗传稳定。与感病材料杂交 ,F1 代表现抗病 ,F2 代抗感株比接近 3∶ 1,说明抗性由 1?
In this study, a mutant of mutant HX-3 was induced by selective in vitro screening using the mature embryo of “Minghui 6 3”, a hybrid rice restorer line with bacterial blight. After 9 generations of genetic stability analysis and genetic studies, the results showed that the disease resistance genetically stable. F1 hybrids were susceptible to disease, and susceptible strains in F2 were close to 3: 1, indicating that the resistance ranged from 1?