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通过奇选42、广二矮104等7个水稻品种,分别配制不同的杂交组合,研究了水稻主要经济性状的遗传力,F_1与两亲本的相关,杂种各世代之间的相关,F代的主要经济性状之间的相关,F_4代构成产量的经济性状与单株谷粒产量的复相关和多元回归分析。结果表明,水稻的株高、千粒重、结实率、单株谷粒重和穗粒数的遗传力较高,这些经济性状在 F_1与两亲本的相关中,在杂种各世代之间的相关中,都表现出中度或高度的显著或极显著的正相关。每株穗数和每穗实粒数与单株谷粒产量,每株穗数和每穗粒数与单株谷粒产量,每株穗数和结实率与单株谷粒产量,在复相关和多元回归中,都表现为显著或极显著的水平。
The genetic diversity of the main economic traits of rice, the relationship between F 1 and the parents, the correlation between the hybrids and the generations were studied through seven hybrid rice varieties (Qi selection 42, Guang Er short 104, etc.) Correlations among the main economic traits, F_4 generations of the economic traits that constitute the yield, and the multiple regression analysis of the grain yield per plant. The results showed that the heritability of rice plant height, 1000-grain weight, seed setting rate, grain weight per plant and grain number per spike were high. Among the correlations between F1 and parents, All showed a significant or highly significant positive correlation with moderate or high degree. The number of panicles per plant and the number of panicle per panicle was positively correlated with the grain yield per plant, the number of panicles per plant and the number of panicles per panicle, the grain yield per plant, the panicles per plant and the seed setting rate, and the grain yield per plant And multiple regression, all showed significant or highly significant levels.