牡丹花期的重复力与遗传相关分析

本文旨在研究牡丹花期等性状的遗传控制程度、遗传相关性及间接选择的可行性。以13个牡丹品种为试验材料，采用随机区组试验设计，测定了单朵初花期、单朵盛花期、单朵凋花期、单朵总花期、花瓣相对含水量、花瓣数、瓣化雄蕊数、总花瓣数、花径等9个数量性状，进行了数量遗传分析，结果表明：牡丹花期和花瓣性状均有着比较丰富的变异；花期各性状重复力在0.3218～0.5074之间，属于中等遗传控制性状；花期天数与花瓣相对含水量呈极显著正向遗传相关，因此，可以用花瓣相对含水量对花期进行间接选择；花期性状与花瓣数和花径无显著相关关系。

Repeatability and Genetic Correlation of Florescence in Paeonia suffruticosa

This paper was conducted to the feasibility of genetic control,genetic correlation and indirect selection of florescence in Paeonia suffruticosa.Nine quantitative traits such as early blooming stage,full blooming stage,fade stage and florescence of single flower;relative water content of petals;the number of common petals,petaloid and all the petals;the length of the single flower of were investigated by randomized block design in 13 Paeonia suffruticosa cultivars during their blooming.The results showed that all the numbers obtained were analyzed by Quantitative Genetics Principle.The results indicated that petals and florescence all had various variation;The repeatability of florescence characters was between 0.3218 and 0.5047,which suggested that these traits were in moderate to higher genetic controlled;florescence had significant genetic correlation with relative water content of petals.So relative water content of petals can be the indirect selection of florescence.Florescence characters did not have significant correlation with the number of petals and the length of single flower.