摘要
参照典范相关分析原理,研究了侧柏[Playcladus orientalis(L.)Franco]种源二年生苗木调查性状与原产地气候因子两组多元变量之间的关系。结果表明:侧柏分枝数和雌花量与原产地的年均降水量关系密切;雄花量除了与降水因子外,还与温度因子有关;“溢脂”是个值得注意的间接选择性状。根据第一对典范变量的气候因子和生物因子得分值进行分类,划分三个生态区和7个生态亚区。
The relationships between the characters of the 2 years old Platycladus orientalis (L.) Franco seedlings from 56 provenances and the climatic factors in their original regions were studied by using the method of canonical correlation. The results show that (1) the correlations between the number of branch, female flower and the annual precipitation are significant; (2) the number of male flower is related to the annual mean temperature especially the mean temperature in January besides the annual precipitation; (3) the value of weights to 'Overfell tallow' is great among the factors of the first two canonical variables. In favor of indirect selection, 'Overfell tallow' is a character to which attention must be paid. Moreover, the map of cluster points was drawn on the basis of the weights between the climatic factors and the biological factors of the canonical variable 1. 3 ecotopes and 7 ecoplots were classified in accordance with the map of cluster points. Consequently, the climatic characteristics of the ecotopes and the growth situation of their ecotypes were summarized.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1990年第4期308-315,共8页
Scientia Silvae Sinicae
关键词
侧柏
种源
苗期
气候因子
相关分析
Platycladus orientalis (L.) Franco
Provenance test
Analysis of canonical correlation
Ecotype
