Chen Cheng-Bin, Ma Xiao-Jun, Chen Li, Xue Mei, Cheng Yu, Song Wen-Qin, Li Xiu-Lan, Chen Rui-Yang
College of Life Sciences, Nankai University, Tianjin 300071, China.
Zhongguo Zhong Yao Za Zhi. 2006 Sep;31(17):1405-8.
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.
Cytological and cytogeographical methods were used in the study.
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 of P. ternata were also found.
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 multiploid is selected for normalized plantation of the plant.
为阐明我国半夏种质资源的遗传背景，对我国16个省、自治区的27个不同居群的半夏染色体组成和细胞地理分布进行了系统研究。
本研究采用细胞学和细胞地理学方法。
中国半夏是一个多倍体复合体，包含七倍体（2n = 7x = 91）、八倍体（2n = 8x = 104）、九倍体（2n = 9x = 117）和十倍体（2n = 10x = 130）。同时还发现了少数半夏的非整倍体系列（2n = 92、103、105、115）。
中国半夏种内无论是自然居群还是栽培居群均普遍存在遗传分化和倍性混杂现象。在选择优良多倍体进行半夏规范化种植之前，应阐明不同倍性半夏的毒性和化学成分。
