崂山腺齿越橘居群表型多样性研究

Study on Phenotypic Diversity of Vaccinium oldhamii Miq. Population in Laoshan

本研究以崂山野生腺齿越橘6个自然居群的27个样本为材料,选取22个表型性状进行综合分析,研究居群间和居群内的表型变异程度及规律。结果表明:6个居群表型性状的变异程度不同,平均变异系数在9%~36%之间,株高和果穗长性状的变异最明显,居群间的变异水平大于居群内;生殖器官性状间具有明显相关性,但与营养器官性状不相关;主成分分析共得到6个主成分,第一主成分的占比最大,为42.878%;表型性状在各居群间的分化不明显,光照在一定程度上影响了性状的表达。

Using 27 samples from 6 natural populations of wild Vaccinium oldhamii Miq. in Laoshan as materials, twenty two phenotypic traits were selected for variance analysis, principal component analysis and correlation analysis to study the variation degree and regulation among and within populations. The results showed that the phenotypic traits of 6 populations had different variation degrees, and the average variation coefficients were between 9%~36%. The variations of plant height and ear length were more obvious and variation levels between populations were greater than that within populations. There was significant correlation between reproductive organ traits, but had no correlation with vegetative organ traits. Six principal components were obtained by principal component analysis, and the proportion of first principal component was maximum as 42.878%. The phenotypic traits were not clearly differentiated among populations, and light affected trait expression to a certain extent.