半夏多倍体复合体及其细胞地理学研究  

Studies on cytogeography of Pinellia ternata poliploid complex

作　　者：陈成彬[1] 马小军[2] 陈力[1] 薛梅[2] 成玉[1] 宋文芹[1] 李秀兰[1] 陈瑞阳[1] 

机构地区：[1]南开大学生命科学学院,天津300071 [2]中国医学科学院中国协和医科大学药用植物研究所,北京100094

出　　处：《中国中药杂志》2006年第17期1405-1408,共4页China Journal of Chinese Materia Medica

基　　金：高等学校博士点专项基金(20040023022)

摘　　要：目的:为了查清半夏种质资源遗传背景,对16个省市地区的27个不同地理居群的染色体构成和细胞地理分布进行系统的调查。方法:采用细胞学和细胞地理学方法。结果:半夏是由七倍体(2n=7x=91)、八倍体(2n=8x=104)、九倍体(2n=9x=117)和十倍体(2n=10x=130)构成的多倍体复合体,并初步查清了它们的细胞地理分布。同时还发现少数的半夏非整倍体系列(2n=92,103,105,115)。结论:半夏不论是自然居群或人工栽培产区,都存在严重的遗传分化和倍性混杂现象。应对不同倍性半夏的毒性和化学成分分析后选择优良的多倍体进行规范化种植。Objective： In order to clarify the genetic background of Pinellia ternata germplasm resources in China, the chromosomal constitution and cytogeographical distribution of P. ternata were investigated in 27 different populations among 16 provinces and regions in China systematically. Method： Cytological and cytogeographical methods were used in the study. Result： P. ternata in China is a polyploid complex, which contains septuploid （2n = 7x = 91 ）, octoploid （2n = 8x = 104）, nonuploid（2n = 9x = 117） and decaploid （2n = 10x = 130）. Meanwhile the aneuploid series （2n =92, 103, 105, 115） of a minority ofP. ternata were also found. Conclusion： The genetic differentiation and the phenomenon of ploidy miscellany commonly exist in the species of P. ternata in China, both for natural populations and cultivated populations. Toxicity and chemical components of different ploidy P. ternata should be clarified before the superior muhiploid is selected for normalized plantation of the plant.

关 键 词：半夏 染色体 多倍体复合体 细胞地理学 

分 类 号：S567.239[农业科学—中草药栽培]