果树叶绿素遗传规律的研究

本试验通过对苹果、桃、葡萄杂交组合叶绿素含量的研究,发现叶绿素a+b含量和叶绿素a含量的遗传表现为母性遗传,但并非单独受胞质基因作用,特别是叶绿素b、a/b值表现出明显的核质互作效应。果树子代叶绿素a+b含量和a/b值较低,表现一定程度的显性,并且后代有超高亲现象出现。本试验证明,叶绿素含量不仅受遗传控制,而且会因环境条件的影响而发生改变。测试时应注意选取同一部位、同类枝条、同一时间的成熟叶片。此外,果树叶绿素b较a易分解,测试时应予控制。

A Study on the Hereditary Regularity of Chlorophyll Content in Fruit Trees

By chorophyll analysis of cross combinations of apple, peach and grape, it was found that the contents of chlorophyll a+b and chorophyll a showed maternal inheritance, Chl. b and a/b ratio showed nucleoplasm interaction obviously. The content of Chl. a+b and a/b value in the leaves of the progeny was low, showed dominance to certain degree and existed super-high-parent phenomenon. According to this study, it was proved that the contents of chlorophyll were not only contrlled by genes, but also affected by enviornmental factors. Therefore, mature leaves should be selected from the same position of the same kind of shoots and at the same time for analysis.