芸苔属两种植物的染色体研究

CHROMOSOME STUDY ON TWO SPECIES OF BRASSICA

研究了芸苔属两种植物芥蓝（Ｂｒａｓｓｉｃａｌｂｏｇｌａｂｒａ）和红油菜（Ｂ，ｃａｍｐｅｓｔｒｉｓｖａｒ．ｐｕｒｐｕｒｅａ）的核型及带型。结果表明：芥蓝的核型公式为２ｎ＝２Ｘ＝１８＝１０ｍ＋８ｓｍ（２ＳＡＴ），带型公式２ｎ＝１８＝１０Ｃ＋２ＣＴＬ＿＋＋４ＣＴ＿＋＋２ＣＮ；红油菜的核型公式是２ｎ＝２Ｘ＝２０＝１８ｍ（２ＳＡＴ）＋２ｓｍ，带型公式２ｎ＝２０＝８Ｃ＋６ＣＴ＿＋＋４ＣＴ＿＋＋２ＣＮ。并在此基础上分析讨论了二者在染色体水平上的差异。

The karyotypes and C一banding pattern of Brassica alboglara and B. campestris var.purpurea were studied in this paper. The result showed, that karyotype and C-banding patternformula of B. alboglaba were 2n=2x= 18= 10 m+ 8sm(2SAT)and 2n= 18= 10 C+ 2CTI+4CT+2CN; B. campestris var。 purpurea were 2n= 2x= 20= 18m(2 SAT)+ 2sm and 2n=20= 8C+6CT+4CT_++2CN。The differences between two plants were discussed on chromosomelevel.