通常在环境条件一致或试验群体很大的情况下,可以不考虑环境条件对有机体的影响时,则杂交亲本的遗传型或基因型是决定杂种遗传性状值的基本原因。这样,由亲本遗传型值决定的表现型值,也可以作为决定杂种表现型值的基础,因此,我们可以应用通径系数原理与相 Generally, when the environmental conditions are the same or the test groups are very large, the influence of environmental conditions on the organism may not be taken into consideration. The genetic type or genotype of the hybrid parents is the basic reason for determining the genetic traits of the hybrids. Thus, the phenotypic value determined by the parental genetic type value can also serve as the basis for determining the phenotypic value of the hybrid, so we can apply the principle of path coefficient and phase