摘要
应用常规统计学方法,对科尔沁沙地冰草5个居群共计100个单株的5个形态学形状(穗长、穗宽、穗轴第一节间长、小穗小花数)进行了分析.各居群均在穗轴第一间节长这一性状表现出最大变异(CV=32.00%),在穗长上表现出最小变异(CV=18.07%).采用Shanno-Weaver信息指数,科尔沁沙地冰草居群多样性指数为1.564 5,显示了较高的遗传多样性.
Five morphological traits of agropyron cristatum sourced from 5 populations in Kerqin Sandland had been studied by using statistical methods.The results indicated that the high genetic variation of agropyron cristatum populations could be found in Kerqin Sandland.Among the traits,the variation of Rachis internode length was maximum(CV=32.00%),the minimal variation was appeared in spihe length(CV=18.07%).the diversity index was 1.5645,The high genetic variation was indicated.
出处
《内蒙古民族大学学报(自然科学版)》
2005年第1期67-70,共4页
Journal of Inner Mongolia Minzu University:Natural Sciences
基金
"863计划"资助项目(2002AA241101)
关键词
科尔沁沙地
冰草
居群
遗传多样性
Kerqin Sandland
Agropyron cristatum
Populations
Genetic diversity