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《Guihaia》 1990-03
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PATTERNS OF KARYOTYPE DIFFERENTIATION OF DIFFERENT POPULATION OF PINUS MASSONIANA

Fang Yongxin and Lu Zhen (Department of Biology, Shanghai Normal University)  
A comparative intraspecific analysis of karyotypes was performed on Pinus massoniana by examining the meristematic cell of root-tips. Seedling were categorized from sixteen different geographic locality of China. Karyotypes of Pinus massoniana apper three different types: type A; type B; type C. On the base of investigation of three types of P. massoniana karyotype, it is supposed that such structural alterations of karyotype reflects certain displacements in the protein metabolism appeared in the adaptaion of organisms to different envi-romental conditions. Differentiation of P. massoniana karyotype was developed from polytypic karyotypes to geographic races between population.
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