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1984～1986年,用168个对褐稻虱抗性1～3级的东南亚血缘的水稻品种和38个抗性7～9级的品种作父本,用野败型不育系珍汕97A及红莲型不育系青四矮A作母本,组配303个组合。鉴定结果,抗性1～3级的组合共11个仅占3.6％,其中汕优早(珍汕97A×外选35)抗性3级,多抗性,丰产性较好,有推广价值;抗性5级丰产性又较好的组合有7个;抗性7～9级有262个。这些F_1各具不同的遗传背景,符合抗性遗传规律。试验结果认为:直接应用外引抗源组配成抗性组合,成功的可能很少。只有将抗性基因导入母本或将含有Bph_5或Bph_6显性抗性基因,能抗多个褐稻虱生物型的种质资源,进行广泛杂交,育成新的抗性品种再作恢复系或保持系才有可能组配出更多的抗褐稻虱的杂交稻组合。
In 1984-1986, 168 rice cultivars with resistance to brown planthopper (BPH) from 1 to 3 levels in Southeast Asia and 38 resistant cultivars from 7 to 9 were used as male parents. Wild-type CMS lines Zhenshan 97A and HL lotus four green short A as the female parent, with 303 combinations. As a result of the identification, a total of 11 combinations with 1 to 3 levels of resistance accounted for only 3.6%, of which, Shanyouzao (Zhenshan 97A × Epi 35) had resistance level 3 with good resistance and high yield, which had the promotion value. There were 7 combinations with high yield and high yield of resistance 5, and 262 with 7-9 level of resistance. These F_1 have different genetic backgrounds, in line with the genetic law of resistance. The test results show that: direct application of anti-source group dubbed resistance combinations, the success may be very small. Only when resistance genes are introduced into female parent or germplasm resources that contain dominant-resistance genes of Bph_5 or Bph_6 can resist extensive brown planthopper biotypes can be extensively cross-fertilized to develop new resistant varieties for restorer or restore It is possible for the lines to be equipped with more hybrid rice combinations resistant to brown planthopper.