粤北乐昌含笑种源选择试验研究

Provenances Trial and Selection of Michelia chapensis Dandy in the North of Guangdong

以九曲水林场乐昌含笑种源试验林六年生数据进行方差分析,结果表明院生长性状和大部分形质性状种源间差异均达极显著水平;相关分析表明生长性状与形质性状间存在显著相关;遗传参数估计结果生长性状种源遗传力处于较高水平,形质性状种源遗传力处于中等偏上水平;根据多重比较结果,以材积为选择目标,选出4个速生种源,现实增℃介于27.78%～84.43%,粤北乐昌含笑速生种源主要集中在广东和江西交界的多个县市。

The genetic variation analyses were carried out based on the data of provenances trial of Michelia chapensis Dandy established in Jiuqushui Forest Farm in 2006.Results of ANOVA indicated that the difference of all growth traits and most of the quality traits reached highly significant level.Correlation between growth and quality traits was highly significant.The estimated genetic parameters confirmed that provenance heritahility of growth traits was in high level,while quality traits was in moderate to upper level.According to the results of multiple comparison for volume,four fast-growing provenances were selected,whose realized gains were between 27.78% and 84.43% .It was showed that fast-growing provenances were located in the countries between Guangdong and Jiangxi.