云南铁杉地理种源表型变异研究

Phenotypic Variation of Geographic Provenance in Tsuga dumosa

分析了云南丽江、怒江、临沧、保山、普洱5个地区的9个云南铁杉地理种源间的数量性状变异,进行了不同种源的栽培试验。结果表明:不同地理种源间球果长、种翅长、种鳞数、千粒质量等12个数量性状指标有显著差异;主成分分析得出形态分化是地理因子、水分因子、温度因子综合作用的结果;相关分析得出地理变异在海拔梯度上呈连续渐变,在纬向上呈随机渐变。3年栽培试验表明:不同地理种源苗木的高、径生长性状差异明显,以3年生苗高为依据筛选出月利、河源、山神庙、狗钻洞4个优良种源。

Nine provenances of Tsuga dumosa(D.Don) Eichler were collected from 5 distribution areas in Yunnan.The quantitative trait variation of different provenances was studied and provenance test was carried out.The variance analysis showed that there were significant differences in the 12 quantitative traits among the provenances.It was found that geograph,water and temperature were the main factors affecting the morphological differentiation by using the method of principal component analysis.Correlation analysi...