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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。
A total of 126 provenances were collected from Pinus massoniana plantations in this experiment. Five representative test sites in Zhejiang Province were used to create a pilot plantation with a uniform design. After 6 years of observation and determination, obtain seed, seedling and young forest phenotype data. The obtained data were analyzed by one-way ANOVA, correlation analysis between traits and latitude and longitude, and path analysis of main traits and meteorological factors of origin. The results show that the masson pine has a zonal declination variation pattern. Principal component analysis (PCA) of 8-12 traits was carried out, and cluster analysis was made using cluster average method. Based on the clustering results of two experimental sites, it was proposed that the provenance of Masson pine could be divided into three zones with four zones. Selecting five traits as growth and adaptability as discriminating factors and combining with the analysis of high growth stability, we initially selected suitable provenances for different ecotopes represented by each experimental point in the province.