蒿属植物的染色体数目和核型研究（一）

STUDIES ON THE CHROMOSOME NUMBERS AND KARYOTYPE OF SIX SPECIES OF ARTEMISIA (COMPOSITAE)

本文报道了我国蒿属６种的染色体核型，它们的核型公式分别为：牡蒿（ＡｒｔｅｍｉｓｉａｊａｐｏｎｉｃａＴｈｕｎｂ．）２ｎ＝１８＝１２ｍ＋６ｓｍ（２ＳＡＴ）；西南牡蒿（Ａ．ｐａｒｖｉｆｌｏｒａＢｕｃｂ．－Ｈａｍ．ｅｘＲｏｘｂ．）２ｎ＝３６＝３０ｍ＋４ｓｍ＋２ｓｔ（６ＳＡＴ）；多花蒿（Ａ．ｍｙｒｉａｎｔｈａＷａｌｌ．ｅｘＢｅｓｓ．）２ｎ＝３６＝３０ｍ＋６ｓｍ：牛尾蒿（Ａ．ｄｕｂｉａＷａｌｌ．ｅｘＢｅｓｓ．）２ｎ＝３６＝２８ｍ＋８ｓｍ（２ＳＡＴ）；野艾蒿（Ａ．ｌａｖａｎｄｕｌａｅｆｏｌｉａＤＣ．）２ｎ＝５４＝４２ｍ＋１２ｓｍ；荚毛蒿（Ａ．ｖｅｌｕｔｉｎａＰａｍｐ．）２ｎ＝５４＝３６ｍ＋１８ｓｍ．

The paper deals with the chromosome numbers and karyotype analyses of six species of Artemisia from southwestern China.Their karyotype formulae are as follows:A.japoniaThunb.,2n=18=12m+6sm(2SAT); A. parviflora Buch.-Ham.ex Roxb.,2n=36=30m+4sm+2st(6SAT);A.dubia Wall.ex Bess.,2n=36=28m+8sm(2SAT),A.myriantha Wall.ex Bess.,2n=36=30m+ 6sm,A.lavandulaefolia DC.,2n=54=42m+12sm;A.velutina Pamp.,2n=54=36m+18sm.