木荷苗期生长性状的地理种源变异

The Geographical Provenance Variation of Schima superba Growth Character at the Seedling Stage

利用来自安徽、浙江等6个省34个木荷种源种子在福建建瓯开展苗期测定试验,研究其种子性状和苗木生长的种源差异及其地理变异模式。方差分析结果显示,种源效应都达到统计学上的显著或极显著水平。通过种源苗木生长与产地地理气候因子的相关分析发现,苗高呈典型的纬向变异模式,产地温度则是造成这种纬向变异模式的主要环境作用因子。与北部种源比较,南部种源生长快。以苗高为标准,初选出苗期表现好的优良种源10个,这些初选种源多来自木荷自然分布的中心产区。

The variance analysis result shows that the effects of 34 Schima superba provenances from 6 provinces all reach the significant or extremely significant level in statistics.The provenances from the south grow quickly as compared with the ones from the north.10 fine provenances are selected preliminarily by taking the seedling height as the standard at the seedling stage,these preliminarily selected provenances mostly come from the naturally distributed center production areas of S.superba.