乐昌含笑种源地理变异研究

张伟红; 王润辉; 郑会全; 晏姝; 韦如萍; 胡德活; 蔡维就; 罗平峰; 黄小平; 吴雄光; 何汉波

doi:10.11929/j.issn.2095-1914.2015.02.004

乐昌含笑种源地理变异研究

Geographic Variation Pattern for Provenances of Michelia chapensis

摘要

摘要: 以6～7年生乐昌含笑多点种源试验林观测数据作为种源地理变异研究材料，通过多点方差分析及相关分析，并对生长性状进行聚类分析。结果表明，参试种源存在显著或极显著差异，说明种源地理变异真实存在；生长和形质性状与产地纬度存在负相关、与经度存在正相关，种源的生长和形质性状呈现随纬度降低、经度增加性状值逐渐增大的地理变异特点（除叶片大小外），来自纬度越低、水热条件越好的种源，其生长表现越好；参试种源可划分成丰产种源区、普通种源区和低产种源区，基本呈现纬度越低、丰产性越好的分布规律。

Abstract: Studies of geographic variation pattern for Michelia chapensis were carried out based on two provenances trials established on 2005 and 2006. Results of multi-site ANOVA showed that significant difference existed among all tested provenances, indicating real geographic variation existed. Correlation analyses revealed that negative correlation were detected between the grow, quality traits and the latitude of the provenance while the positive correlation existed between traits and longitude. The less the latitude and the larger the longitude, the traits were the larger, this pattern was suitable for all traits(except shape of leaf) . With the better condition of water and heat, Provenances from lower latitude grew well. Based on the grow traits, cluster analysis was carried out and three groups were classified, which were the high, medium and low yield provenances area,showing that the rule of ‘the lower of the latitude, the better of the yield’.

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