油用牡丹主要表型性状的相关分析

Correlation Analysis of Main Phenotypic Traits of Oil Peony

为探讨油用牡丹主要表型性状和单株产量的变异性及相关性,以产油量较好、观赏性较佳的36份牡丹种质为供试材料,对25个表型性状进行变异性、相关性和主成分分析。结果表明,油用牡丹表型数量性状变异系数为9.1%~83.1%,其中,产量性状的变异系数较高,为17.3%~83.1%;25个性状间存在不同程度的相关性,相关系数介于-0.67~0.96;前5个主成分的累积量达到74.816%,第一主成分主要反映植株的产量性状和果实性状。表明单株种子产量、有效聚合蓇葖果数、单株种子粒数和单株花朵数应作为选育油用牡丹的首要指标。

To explore the variability and correlation of the main phenotypic traits and yield per plant of oil peony.Thirty-six peony varieties with good oil production and good ornamental properties were used as test materials, and variability,correlation and principal component analysis were performed on 25 phenotypic traits.The results showed that:The variability of phenotypic quantitative traits ranged from 9.1% to 83.1%,and the coefficient of variation of yield traits ranged from 17.3% to 83.1%.There were different degrees of correlation between the 25 traits,and the correlation coefficient was between -0.67 and 0.96.The cumulative amount of the first five principal components reached 74.816%,and the first principal component mainly reflected the yield traits and fruit traits of the plants.The studies have shown that the yield per plant,the number of effective polymerization fruits, the number of seeds per plant and the number of flowers per plant should be the primary indicators for the selection of oil peony.