The Morphology And Karyotype Analysis Of Baphicacanthus Cusia(Nees) Bremek

In this study, the morphology and microscopic characteristics and karyotype characteristics of Baphicacanthus cusia(Nees) Bremek. were investigated. The results were as following:1.There were significant differences in height, stem diameter, leaf length, leaf width of Baphicacanthus cusia(Nees) Bremek. among different habitats. The 13 different habitats were divided into three groups: habitats in groupâ… were :Guizhou, Minhoushanenyuan, Putiandayang, Nanjinghexi, Longyanxinluo, they were high and leptophyllous ; habitats in groupâ…¡were:Bendiyesheng, Yongtaiqingyunshan,Yongtaichibi,Nanpingmangdangshan,Longyanzijinshan ;habitats in groupâ…¢were: Fuzhousenlingongyuan,Bendizaipei,Bendiyesheng, they were short and the leaves nearly oval.2.Stem, rhizome and leaf were studied by free hand section method.Baphicacanthus cusia(Nees) Bremek. of different habitats with similar structure: there were cytolite,stone cell in the rhizome. Vascular bundles of the midrib were arranged in a semicircle. The difference was that there were no white pith in the Bendiyesheng.3.All four different habitats presented uniform diploid numbers(2n=32),yet different in their karyotypic formulae: Bendizaipei was 2n=2x=32=5m+6sm+5st, which belong to"3B"type, the AS.K% was 70.09%; Bendiyesheng was 2n=2x=32=5m+7sm+4st, which belong to"3B"type, the AS.K% was 67.50%;Nanpingmangdangshan was 2n=2x=32=12m+4sm,which belong to"2B"type, the AS.K% was 61.94%; Guizhouyizai was 2n=2x=32=8m+7sm+1st, which belong to"2B"type, the AS.K% was 65.68%.