车前属两个种的核型报道

The report on Karyotypesof plantago lessingii and plantago minuta

报道了车前属两种车前的核型．ＰｌａｎｔａｇｏｌｅｓｉｎｇｉＦｉｓｃｈ．ｅｔＭｅｙ为２ｎ＝１２，核型属于“２Ａ”，核型公式为Ｋ（２ｎ）＝１２＝１０ｍ＋２ｓｍ；Ｐ．ｍｉｎｕｔａＰａｌ为２ｎ＝１２，核型仍属“２Ａ”型，核型公式Ｋ（２ｎ）＝１２＝８ｍ＋２ｓｍ＋２ｓｔ．染色体相对长度组成２ｎ＝２Ｌ＋４Ｍ２＋４Ｍ１＋２Ｓ１，２ｎ＝６Ｍ２＋６Ｍ１，染色体总长分别为３０．６０，２９．８０，由１２对染色体组成．

The Karyotypes formula of plantago lessingii Fisch.et Mey and P minuta isreported . K(2n) =12=10m+2sm, K(2n) =8m+2sm+2st,and Karyotype “2A” type,composition of relative length of chromosomes: 2n=2L+4M2+4SM1+2S1,2n=6M2+6M1 .The total length of chromosomes are 30 6 and 29 8 respectively.Both are conposed of 12 pairs of chromosomes.