[Study on variation specificity of maize induced by colchicine].
After two years continuous self-pollination,the variated specificities of five kinds of variations of maize induced by colchicine were examined and measured. Experiments show that germination potential increased 3% - 46%, cell diameter of root tip meristem region is 6% - 15% less than original material, meanwhile, nucleus diameter increased 5% - 18%, percentage of chromosome variation is 25.25% - 38.35% in root tip meristem region,but variation range is mainly in 10 - 30 piece. However, chromosome numbers tend to be more than 20 in root tip of maize No.1 and No.16, the other material variation trend is unobvious.
Yang
Xiao-Ling
XL
Agronomy College, Shanxi Agricultural University, Taigu 030801, China.
Guo
Jin-Yao
JY