青钱柳种源间生长及黄酮积累的变异分析

为了对中国特有的木本药用植物青钱柳进行优良种源和家系筛选和研究,分析了12个种源33个家系青钱柳的生长和黄酮积累。结果表明:种源间和种源内家系间均对树高和胸径生长的变异产生了显著的影响,但种源的影响更大;而总黄酮和黄酮单体(槲皮素、异槲皮苷、山奈酚)的含量仅在种源内家系间产生了显著的变异,家系的影响平均占到总变异的86%,而且生长和黄酮积累均表现出明显的地理变异规律。聚类分析结果表明,33个青钱柳家系可以划分为4类。

Variations in growth and flavonoid accumulation among different Cyclocarya paliurus provenances

Cyclocarya paliurus is a sole medicinal tree species in China. However, limited information is available on its genotype selection for improving growth and flavonoid production. In this study, we analyzed the growth and flavonoid accumulation in 33 families of Cyclocarya paliurus from 12 provenances. Results indicated that tree height and diameter at breast height growth were significantly influenced by provenance and family, while provenance had more important impact. The contents of total and individual flavonoids (quercetin, isoquercitrin, and kaempferol) were significantly influenced only by family, which accounted for 86% of total variation. The growth and flavonoid accumulation of C. paliurus showed a distinct geographic variation pattern. The hierarchical cluster analysis based on the growth and flavonoid contents in leaves indicated that 33 families of C. paliurus can be classified into 4 distinct groups.