浙江省马尾松种源试验阶段报告

本试验共收集马尾松分布区内126个种源的种子,在浙江省内五个具代表性的试验点采用统一设计营造试验林。经6年的观察和测定,取得种子、苗木和幼林期的表型资料。对获得的资料进行性状单因素方差分析,性状与纬度、经度的相关分析,主要性状与产地气象因子的通径分析。结果认为,马尾松具有纬向倾群变异模式。对8-12项性状进行主分量分析,并运用类平均法作系统聚类,综合2个试验点的聚类结果,提出马尾松种源可划分为3个带4个区。选取生长、适应等五个性状作判别因子,结合高生长稳定性分析,为省内各试验点代表的不同生态区初步评选出适生的优良种源。

STAGE REPORT ON PROVENANCE TESTS OF MASSON PINE IN ZHEJIANG PROVINCE

In this test the seeds from 126 provenances were collected thoughout masson pine's distribution area and planted in the province's five sites with an uniform design. The phenotype data in seed, seedling and young tree stages were recorded through observations and measurements for a period of six years, and then five physiological characters and peroxidase isozyme of seedling were analysed. Three analyses of the data obtained were made, i.e. the univariate variance analysis of characters, correlation analysis of characters with latitude and longitude, and path analysis of main traits with meteorological elements in the place from where the seeds were collected. The results suggest that masson pine populations show characteristics of latitude-oriented variant model. After analysing and systhesizing of the data of eight to twelve characters from two sites by means of principal component analysis (PCA) and systematic mean cluster analysis, it is concluded that the provenances of masson pine could be divided into three zones and four districts. By using five traits including growths and adaptabilities as distiction factors and analysing stabilities of seed sources in high growth, some suitable provenances were chosen for different ecological regions represented by the five plantations.