关键词: 高粱, 高粱, 体细胞变异, 化学诱变, 硫酸二乙酯

Abstract:

In order to study the biodiversity connectivity of seed plants from Tianmu mountain range, floras of Longwangshan, Xitianmu and Dongtianmu, Zhejiang Province were studied concerning geographical elements analysis, biodiversity capacity, and biodiversity flux. The results showed that these three areas Pan-tropical element was dominant at generic level while North temperate was dominant at familial level, indicating an obvious transitional floristic characteristic. Based on number of species and richness index, the biodiversity capacity of Xitianmu was the largest of all. In light of biodiversity flux, the familial similarities among the three areas were more than 70% while the species similarities, except between Longwangshan and Xitianmu, were more than 50%. Meanwhile, the generic similarities were more than those at species level but less than at familial level. Accordingly, the result of floristic similarity suggested that there was marked differentiation of seed plants among those Nature Reserves within Tianmu mountain range. Thus, it might be conducive to promote the whole preservation of biodiversity across Tianmushan mountain range by strengthening the protection and rehabilitation of plant bio-diversity in Dongtianmu, as well as by constructing ecological corridors.