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对24个籼粳杂交稻组合产量比较,结果以秀水11优92-1产量最高,比对照汕优10号增13.4%。考察主要农艺性状认为:半数组合的播始历期比对照短或相近,大部分组合株高超对照,单株有效穗比对照有增有减,每穗总粒数增幅显著,结实率和千粒重多数组合比对照下降。并对增产组合的遗传相关系数和遗传通径进行了分析。
The yield of 24 combinations of indica and japonica hybrid rice was compared. The results showed that the yield of 92-1 was the highest in Xiushui 11.4% higher than that of Shanyou 10. The main agronomic traits were considered as follows: the beginning dates of the half combinations were shorter or similar than that of the control, most of the combinations were over-control, the effective panicles per plant were increased and decreased, the total grains per panicle increased significantly, the seed setting rate and the thousand-kernel weight The combination decreased compared with the control. The genetic correlation coefficient and genetic path of increased yield combinations were analyzed.