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目前,杂交育种还是创造新品种的主要方法之一。但育种实践仍有只靠实践经验,忽视科学的予见性的倾向。由于在杂种分离世代中,产生性状的连续分布、遗传力等一些参数的变化和显性作用的干扰等现象,影响提高选择效果。因此,本文以生产上推广应用的主要春小麦品种为供试材料,根据数量性状的基因遗传作用,利用方差分析法,估算了主要性状的若干遗传参数,初步分析我省已推广的春小麦品种主要性状的遗传动态,为育种工作在后代选择方面提供一些参考依据,以达到提高选择效果的目的。
At the moment, hybrid breeding is one of the main ways to create new breeds. However, there is still a tendency to rely solely on practical experience in breeding practice to ignore the prejudice to science. Due to the generation of hybrids in the generation of continuous distribution of traits, heritability and other changes in some parameters and the dominant effect of interference and other phenomena, to improve the selection effect. Therefore, based on the genetic effects of quantitative traits, the main spring wheat cultivars that are widely used in production were tested for the genetic parameters and the variance analysis was used to estimate the genetic parameters of the main traits. The main traits of spring wheat cultivars promoted in our province The genetic dynamics for the breeding work in the selection of future generations to provide some reference to achieve the purpose of improving the selection effect.