The Nature of the Series of Environmental Variances and the Estimation of the Genetic Variances and the Geometric Means in Crosses Involving Species of Lycopersicon.
The Nature of the Series of Environmental Variances and the Estimation of the Genetic Variances and the Geometric Means in Crosses Involving Species of Lycopersicon.
复制标题
一系列环境差异的性质以及涉及番茄物种的杂交中遗传差异和几何平均值的估计。
作者：
L. Powers
ENETIC studies on the inheritance of quantitative characters G would be materially facilitated if the nature of the series of environmental variances were known, if the genetic variances could be estimated, and if some of the problems involved in estimating the geometric means could be solved. A knowledge of the nature of the series of environmental variances is essential to a separation of that part of the variability due to environment from that part of the variability due to the segregation of genes (genetic variability). In addition, a method whereby the genetic variance could be estimated would be particularly valuable in determining the relative importance of environment and inheritance on the development of a character, in studying the possible number of gene pairs differentiating the character under consideration, in evaluating the relative importance of so-called major and minor gene effects, and in determining the nature of the interaction of the genes involved. Accordingly, the purposes of this study are to determine the nature of the series of environmental variances, to develop a method whereby the genetic variances can be estimated, and to solve some of the problems connected with an estimation of the geometric means. Recently, interest has been renewed in the . nature of the interaction of the genes affecting quantitative characters. That the genes may have multiplicative effects was suggested by EAST in 1913. More recently
