国产磨芋属的染色体核型报道(Ⅱ)

REPORT ON THE KARYOTYPES OF AMORPHOPHALLUS FROM CHINA ( Ⅱ )

本文报道了磨芋属(Amorphophallus Blume)三个种(其中包括两个最近发现的新种)的染色体数目和核型,其核型公式分别是: 1.结节磨芋 K(2n)=2x=26=20m(2SAT)+6sm; 2.疣柄磨芋 K(2n)=2x=28=2M+16m+8sm+2st; 3.矮磨芋 K(2n)=2x=26=20m+4sm+2st; 本文还在报道磨芋(A.konjac)两个居群的核型的基础上,提出不同居群磨芋的核型存在一定异;并比较了矮磨芋和磨芋两个居群的核型,从核型上分析了它们之间可能的关系。

Chromosome numbers and karyotypes of 3 species (including 2 new species) of Amorphophallus (Araceae) are reported in the present paper. The karyotypes can be formulated as follows:1). A. pingbianensis K(2n)=2X=26=20m(2SAT) + 6sm;2). A. virosus K(2n)=2X=28=2M+16m + 8sm + 2st;3). A. nanus K(2n)=2X=26=20m + 4sm+ 2st.Also the karyotypes of 2 local populations of A. konjac are reported in this paper and the karyotypes are different between local populations. Meanwhile the authors elucidate the possible relationship between A. nanus and the 2 local populations of A. konjac by comparing their karyotypes.