杉木无性系雌球花量与生长性状的遗传相关分析

通过对广西柳州地区杉木种子园母树的雌球花量与树高、胸径、冠幅、冠高、树冠表面积等生长性状进行遗传相关分析.结果表明:用生长性状对雌球花量进行间接选择效率不高;雌球花量与生长性状的相关变异小,性状比较稳定.相关遗传力通径分析表明,树冠表面积对雌球花量的直接作用最大.

A Genetic Correlation Analysis of Female Flowers of Chinese fir Clones in Guangxi

The author applied genetic correlation analysis to studying the correlations between quantity of female flowers and height, diameter, crown width, crown height, crown surface of Chinese fir mother trees which were planted on Chinese fir seed garden in Luizhou, Guangxi. The results showed that: it was inefficient to select quantity of female flowers according to their grownth traits; the correlation variation of quantity of female flowers was small; the trait was stable. Correlative heritability path-coefficient analysis showed that crown surface had the greatest direct effect to the quantity of female flowers .