摘要
对引自湖北武当山、湖南南部和西北部的12个居群盾叶薯蓣的生长状况及叶形、叶色、叶长、叶宽、叶基、叶张角等12个形态指标进行了观测和比较分析,并测定了各居群的叶和块茎中的皂苷元含量.结果表明:1)在置信水平λ=8.0340时,11个居群可划分成2大类型:①长叶型:主要形态特征为叶片长度大于宽度,中裂片相对较长;②宽叶型:主要形态特征为叶片宽度大于长度,中裂片相对较短;2)不同居群盾叶薯蓣花序数、叶片总数、开花时间、花期长短、茎干重、叶干重等存在显著的差异;3)不同居群皂苷元含量差异也较显著,居群块茎中薯蓣皂苷元含量最高达3.98%(3号)、最低(7号)仅0.33%,而居群叶中约莫皂苷元含量最高达4.27%(4号)、最低(2号)为0.98%.
Twelve populations of Dioscorea zingiberensis C.H.Wright from the Wudang Mountain of Hubei、southern and northwest mountain of Hunan and yarn growth area were collected and cultivated in the greenhouse of the Institute of Ecology of Jishou University.Their growth status and main morphological characteristics of leaves were observed and analyzed.And the disogenin and yamogenin contents of twelve populations were determined.The results showed:1) Twelve main morphological characters of leaves were classified with fuzzy cluster analysis,when the confidence level (λ) was 8.034?0 the populations were divided into following 2 types:① long leaf type:the length of leaf was longer than that of the width;② wide leaf type:the width of leaf was longer than that of the length.2)The growth status of the populations had obvious difference.3)The Sapogenin content of populations were different significantly.The highest content of diosgenin is 3.98% (population 3) and the lowest is only 0.33% (population 7),the highest content of yamogenin is 4.27% (population 4) and the lowest is 0.98%(population 2).
出处
《生命科学研究》
CAS
CSCD
2003年第1期58-64,共7页
Life Science Research
基金
湖南省教育厅产业化专项经费资助项目
关键词
盾叶薯蓣
形态变异
模糊聚类分析
生长状况
皂苷元
Dioscorea zingiberensis C.H.Wright
morphological variation
fuzzy cluster analysis
growth status
Sapogenin
