东北蒿属艾组12种植物核型研究

STUDY ON KARYOTYPES OF ARTEMISIA SECT.ARTEMISIA Y.R.LING. IN NORTHEAST CHINA

报道东北蒿属艾组 1 2种植物的染色体数及核型资料 ,结果如下 :宽叶山蒿 (Artemisiastolonifera (Maixm .)Komar.) 2n =4x =36=2 8m + 4sm ( 4SAT) + 4st( 4SAT) ;野艾蒿 (A .lavan dulaefoliaDC) 2n =2x =50 =40m + 4sm + 6st( 6SAT) ;矮蒿 (A .lanceaVan .) 2n =2x =1 6=1 0m+ 4sm + 2st;蒙古蒿 [A .mongolica (Fisch .exBess.)Nakai]2n =2x =1 6=1 4m + 2st;红足蒿 (A .rubripesNakai) 2n =2x =1 6=1 4m + 2st;歧茎蒿 (A .igniariaMaixm .) 2n =2x =34=2 8m + 2sm+ 4st( 4SAT) ;柳叶蒿 (A .integrifoliaLinn .) 2n =4x =36=2 0m + 1 2sm + 4st;线叶蒿 (A .subula taNakai) 2n =2x =1 6=1 4m + 2st;高岭蒿 (A .brachyphyllaKitam .) 2n =2x =1 8=1 4m + 2sm +2st;林艾蒿 [A .viridissima(Komar.)Pamp .]2n =2x =1 8=1 4m + 4sm ;奄闾 (A .keiskeanaMiq .)2n =2x =1 8=1 6m + 2sm ;阴地蒿 (A .sylvaticaMaxim .) 2n =2x =1 6=1 4m + 2sm ,核型对称性野艾蒿 (A .lavandulaefolia)为 2B型 ,其余均为 2A型。依据核型资料对个别种的演化和分类进行了初步探讨。

The chromosome numbers of twelve species and karyotypes of everyone of Artemisia in northeast China are reported.These included first counts for five species.The karyotype formulated are as follows: A.stolonifera 2n=4x=36=28m+4sm(4SAT)+4st(4SAT); A.lavandulaefolia 2n=2x=50=40m+4sm+6st(6SAT); A.lancea Van. 2n=2x=16=10m+4sm+2st; A.mongolica (Fisch.ex Bess.)Nakai 2n=2x=16=14m+2st; A.rubripes Nakai.2n=2x=16=14m+2st; A.igniaria Maixm. 2n=2x=34=28m+2sm+4st(4SAT); A.integrifolia Linn. 2n=4x=36=20m+12sm+4st; A.subulata Nakai.2n=2x=16 =14m+2st; A.brachyphylla Kitam.2n=2x=18=14m+2sm+2st; A.viridissima ( Komar.)Pamp. 2n=2x=18=14m+4sm; A.keiskeana Miq.2n=2x=18=16m+2sm; A.sylvatica Maxim.2n=2x=16=14m+2sm,karyotypes of these species are symmetric and belong to 2B except A.lavandulaefolia .According to the information of karyotypes ,classification and evolution of the several species were investigated.