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本文利用主分量分析和判别分析技术,研究了油松遗传变异问题。结果表明,油松的地理变异具有生态型变异的特点,并划分了7个生态型:1.西北型:抗寒性强,生长慢,针叶短;2.东北型:生长中等,抗寒性强;3.西南型:生长较快,抗寒性较差;4.中西型:生长快,抗寒性较差;5.中部型:生长中等,抗寒性较强;6.东部型:生长快,抗寒性较差;7.南部型:生长较快,抗寒性差,再生长现象最强烈,针叶长而细。油松生态型的研究可为种子区划工作提供直接的依据。
In this paper, the principal component analysis and discriminant analysis techniques to study the genetic variation of Pinus tabulaeformis. The results showed that the geographical variation of Pinus tabulaeformis was characterized by ecotype variation and divided into seven ecotypes: 1. Northwest type: strong cold hardiness, slow growth and short needles; 2. Northeast type: moderate growth, cold resistance 3. Southwest type: fast growth, poor cold resistance; 4. Chinese and Western type: fast growth, poor cold resistance; 5. The middle type: growth medium, strong cold resistance; 6. Eastern : Fast growth, poor cold resistance; 7 southern type: rapid growth, poor cold resistance, the phenomenon of the strongest growth, needle long and thin. The study on Pinus tabulaeformis ecotypes can provide a direct basis for seed-zoning work.