应用生态学报2017，Vol.28Issue(3)：748-756,9.DOI:10.13287/j.1001-9332.201703.001
岷江柏天然种群种实表型变异特征
Phenotypic variations in cones and seeds of natural Cupressus chengiana populations in China
摘要
Abstract
A total of 13 phenotypic traits from 11 natural populations of Cupressus chengiana were investigated by using nested analysis,variation coefficient,phenotypic traits differentiation coefficient,and un-weighted pair-group method by arithmetic averages (UPGMA) cluster analysis.Phenotypic variations among and within populations of C.chengiana were discussed,the relationship among phenotypic traits and that between phenotypic traits and environmental factors were analyzed,and the 11 populations were divided.The results showed that there was significant difference in phenotypic variation both between and within populations.Variation within populations (49.7％) was greater than that between populations (28.6％).The mean coefficient of phenotypic differentiation between populations was 43.4％ suggesting the differentiation between populations was relatively larger.The average variation coefficient of cone mass was the highest (37.2％),followed by seed mass in single cone,and that of cone length was the smallest (8.0％) indicating the cone length was the most stable phenotypic trait.The phenotypic diversity was greatest in Kangding County and smallest in Wudu County.The mean annual temperature of the hottest month and mean annual precipitation of growing season were the main environmental factors on phenotypic diversity in cones and seeds of C.chengiana in the study region.According to the 13 phenotypic traits,the 11 populations could be divided into two groups and three subgroups,which showed how C.chengiana distributed in three watersheds.Phenotypic traits in cones and seeds of C.chengiana populations were the best in Daduhe River watershed,and those were the worst in Minjiang River watershed.关键词
种实/表型性状/环境因子/天然种群/岷江柏Key words
cone and seed/phenotypic trait/environmental factor/natural population/Cupressus chengiana引用本文复制引用
冯秋红,史作民,徐峥静茹,缪宁,唐敬超,刘兴良,张雷..岷江柏天然种群种实表型变异特征[J].应用生态学报,2017,28(3):748-756,9.基金项目
本文由国家科技支撑计划项目(2012BAD22B0102)资助 This work was supported by National Science&Technology Support Plan (2012BAD22B0102). （2012BAD22B0102）
