Phenotypic Traits and Biomass Comparative Analysis of Michelia odora Seedlings from Different Provenances
For the early selection of superior provenance for Michelia odora,based on the one-year seedlings of 11 geographical provenances collected previously,the differences in phenotypic traits,the changes in coefficient of variation among provenances,as well as their relationships with geographical and climatic factors were compared,and the differences in biomass of various organs of M.odora seedlings among provenances were analyzed.Taking advantage of the method of cluster analysis and fuzzy membership function,the comprehensive evaluation of the M.odora provenance was carried out.The results showed that the growth increment of M.odora during the seedling stage exhibited significant rhythmicity.The growth rate decreased significantly from July to October,and after November,it reached the lowest point and almost stopped growing.Phenotypic traits and biomass differed significantly among geographical provenances of M.odora(P＜0.01).The average coefficient of variation of phenotypic traits from different geographical provenance was 14.11％,and the majority of phenotypic traits at seedling stage correlated negatively with geographical factors significantly.M.odora grew very well in low latitude,high temperature and abundant precipitation areas.The 11 M.odora geographical provenances was divided into 3 groups by the clustering analysis and the fuzzy membership function evaluation,and the M.odora from Nanning Arboretum was identified as the superior one.
万方数据
维普
