论文部分内容阅读
本文用遗传相关、遗传通径分忻、多元线性回归等分析方法,用电子计算机对八个甘蓝型油菜(Brassicanapus L.)品种的十个植株性状进行了统计分析,同时,根据各性状的遗传力和遗传变异系数,提出高产育种的选择方法。本试验结果表明,单株产量受多因素影响,其中单株有效角果数、每角粒数、千粒重和株高对单株产量的直接影响显著,且为正值。其他性状对单株产量的直接影响不显著。育种中,早期应进行株高的选择,中后期分别对单株有效角果数、千粒重和每角粒数进行连续的定向选择,同时还应考虑各性状间的遗传相关,以选出高产的油菜新品种。
In this paper, we analyzed the ten plant traits of eight Brassica napus cultivars by genetic algorithms, genetic calculus analysis and multivariate linear regression analysis. At the same time, according to the genetic Force and genetic coefficient of variation, put forward the selection method of high-yielding breeding. The results showed that the yield per plant was affected by many factors, of which the number of effective pods per plant, the number of grains per square, the weight per plant and plant height had a significant direct effect on the yield per plant, and was positive. The direct effect of other traits on the yield per plant was insignificant. Breeding, early selection of plant height should be carried out in the late, respectively, the effective number of pods per plant, 1000-grain weight and number per horn continuous selection, and should also consider the genetic correlation between the traits in order to select high-yield New varieties of rape.