Abstract: Forty eight materials of Oryza rufipogon revaluated for resistance to three strains, P₁, HB84-17 and T₁ of bacterial blight, Xanthomonas campestris pv. oryzae. Six ones were resistant to all three strains. One of the six materials, RBB16, was stable and homogeneous relatively in resistance. Inheritance for resistance to the three strains of bacterial blight was studied in RBB16. The resistance to strains P₁, HB84-17 and T₁ in RBB16 was controlled by two to three dominant genes at the all growth stages respectively. Allelic tests showed that they were nonallelic to gene Xa-4. A further test for confirming whether RBB16 has new gene(s) for resistance to bacterial blight will be made. Breeding studies showed that the resistance of RBB 16 was effective.

Key words: Inheritance, Oryza rufipogon, Xanthomonas campestris pv. oryzae, Resistance gene, Resistance

摘要： 重复评价了48份普通野生稻对3个白叶枯病菌系P1、HB84-17和T1的抗性。6份材料抗所有3个菌系，其中1个材料RBB16的抗性是相对稳定和纯合的。遗传研究表明RBB16对菌系P1、HB84-17和T1的全生育期抗性分别受制于2和3对显性基因，它们与显性基因Xa-4非等位,是否为新基因尚待进一步测定。抗性转育表明RBB16的抗性遗传效应较强。

关键词: 白叶枯病, 抗性, 遗传, 普通野生稻, 基因