新种祁门过路黄的核型证据  

Karyotypical evidence for the new species Lysimachia qimenensis

作　　者：邵剑文[1] 张小平[1] 

机构地区：[1]安徽师范大学生命科学学院

出　　处：《广西植物》2006年第1期58-62,共5页Guihaia

基　　金：安徽省自然科学基金(98242017);安徽省教育厅自然科学研究基金(2005kj184);安徽师范大学科研专项基金(2004xzx07)资助~~

摘　　要：对新种祁门过路黄及其近缘种巴东过路黄和光叶巴东过路黄的核型在居群水平上进行了比较研究。结果表明这两种植物的核型特征在种内是稳定的,同一物种的不同居群间核型无明显差异。祁门过路黄的核型为2n=2x=24=6m+6sm+6st+6t;巴东过路黄和光叶巴东过路黄的核型均为2n=2x=24=6m+4sm+6st+8t;两物种间核型差异显著,核型特征支持将祁门过路黄作为新种处理。The karyotypes of the new species Lysimachia qimenensis X. H. Guo,X. P. Zhang et J. W. Shao and its related species,namely L. patungensis Hand.-Mazz. and L. patungensis f. glabrifolia C. M. Hu,were investigated and compared. Three different populations of each species were studied. The results of this study indicated that thekaryotypeofL, qimenensisX. H. Guo,X.P. Zhang etJ. W. Shaois 2n=2x=24=6m＋6sm＋6st＋6t,while that of L. patungensis Hand.-Mazz. and L. patungensis f. glabrifolia C. M. Hu. is 2n=2x=24=6m＋4sm＋6st＋St;No obvious karyotypical differences were found between different populations of the same species,but remarkable differences were found between the two different taxa. Therefore,with the data from the karyotypes and morphological characters combined,it is reasonable to consider L. qimenensis X. H. Guo,X. P. Zhang et J. W. Shao as a new species,instead of a variety of L. patungensis Hand. -Mazz.

关 键 词：新种 核型 证据 

分 类 号：Q943[生物学—植物学]