细叶鸢尾的染色体核型分析

Karyotype Analysis in Iris Tenuifolia

本文对细叶鸢尾（Ｉｒｉｓｔｅｎｕｉｆｏｌｉａ）的染色体核型进行了分析。其核型公式为：ｋ（２ｎ）＝２ｘ＝１４＝６ｍ＋８ｓｍ（２ＳＡＴ），核型为“２Ａ”型，核型不对称系数为６１．０７％，染色体相对长度组成为２ｎ＝１４＝４Ｍ２＋１０Ｍ１，染色体组总长度为３２．３２３μｍ。

This paper deals with cytological study on Iris tenuifolia.The number of somatic chromosome in rootstips has been found to be 2n=18, the kanyotype formula of I.tenuifolca is k(2n)=14=6m+8sm(2SAT) and belong to 2A of stebbins karyotype symmetry.The species chromosome compsition of relative length is 2n=14=4M2+10M1.The total length of the chromosome is 32.323m.