摘要
为探讨不同种源樟树(Cinnamomum camphora)果实和种子的表型性状差异程度、变异规律及其与地理气候因子的关系,以重庆、湖南和广西等7个种源地的樟树果实和种子为试验材料,采用方差分析、相关性分析和主成分分析方法对樟树果实和种子的8个表型性状进行比较研究。结果表明,除果形指数外,其他7个表型性状在种源间均差异极显著。8个表型性状的变异系数为3.671%~18.497%,其中种子千粒重的变异系数最大(18.497%),种形指数的变异系数最小(3.671%),说明樟树的种子形状最稳定。樟树果实及种子的表型性状与年均气温和年均降水量相关性明显,在年均气温高和年均降水量大的分布区,果实和种子较大,并呈现由北向南逐渐增大的趋势。
In order to explore degree of phenotypic trait difference and variation law of fruits and seeds from different provenances of Cinnamomum camphora and their relationships with geographical and climatic factors,fruits and seeds of C. camphora from seven provenances including Chongqing, Hunan, and Guangxi were used as test materials, and analysis methods of variance, correlation, and principal component were applied to contrast and analyze eight phenotypic traits of fruits and seeds. Results showed that except for fruit shape index,the other seven phenotypic traits had extremely significant differences among provenances. Variation coefficients of eight phenotypic traits were from 3.671% to 18.497%. Among them, variation coefficient of thousand-grain weight of seed was the largest(18.497%), and variation coefficient of seed shape index was the smallest(3.671%), which showed that seed shape was the most stable. Phenotypic traits of fruits and seeds were significantly correlated with annual average temperature and annual average rainfall. In the distribution area with high annual average temperature and annual average rainfall, C. camphora tended to have large fruits and seeds, which showed a trend of gradually increasing from north to south.
作者
李开祥
梁晓静
朱昌叁
安家成
曾祥艳
杨卓颖
Li Kaixiang;Liang Xiaojing;Zhu Changsan;An Jiacheng;Zeng Xiangyan;Yang Zhuoying(Guangxi Forestry Research Institute,Guangxi Key Laboratory of Special Non-wood Forest Cultivation&Utilization,Guangxi Woody Spices Engineering and Technology Research Center,Engineering and Technology Research Center for Anise and Cinnamon of National Forestry and Grassland Administration,Nanning,Guangxi 530002,China)
出处
《广西林业科学》
2020年第1期1-6,共6页
Guangxi Forestry Science
基金
自治区主席科技资金项目(1517-06)
中央财政林业科技推广示范项目([2018]TG13号)
广西林科院基本科研业务费专项(林科201806号)
广西林业科技项目(桂林科字[2016]第6号)
第八批广西特聘专家专项。
关键词
表型性状
对比分析
樟树
果实
种子
phenotypic traits
comparative analysis
Cinnamomum camphora
fruits
seeds