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对“十一五”通过四川省审定的50个中籼迟熟三系杂交稻组合的产量和稻瘟病抗性进行了分析,并研究了产量与稻瘟病抗性的相关关系。结果表明,50个杂交稻组合中丰抗结合较好的组合有1个;丰产性突出、感稻瘟的组合有7个;抗稻瘟病的组合有1个。区域试验产量与颈瘟平均级呈极显著正相关,与颈瘟最高级呈负相关;颈瘟鉴定的平均级与叶瘟的最高级和平均级呈极显著正相关。该试验为水稻生产的发展提出区域优势品种布局建议,并为培育超高产、抗稻瘟病能力强的强势组合提供参考。
The yield and blast resistance of 50 indica late maturing three-line hybrid rice combinations tested in Sichuan Province during the 11th Five-Year Plan were analyzed. The correlation between grain yield and blast resistance was also studied. The results showed that there was one combination of high-yielding and anti-combination in 50 hybrid rice combinations, 7 combinations with high yielding and blast-susceptibility, and 1 blast-resistant combination. The yield of regional experiment was significantly and positively correlated with the average level of neck blast and negatively correlated with the highest level of neck blast. The average level of detection of neck blast was extremely significantly positively correlated with the highest and average level of leaf blast. The experiment proposed the layout of regional superior varieties for the development of rice production and provided reference for cultivating the strong combination of super high yield and blast resistance.