不同居群盾叶薯蓣生长叶形态及皂苷元含量的研究.pdfVIP

7 1 生命科学研究 Vol . 7 No . 1 200 3 3 Life Science Research M ar. 200 3 李朝阳, 杨朝霞, 陈功锡, 刘辉兵, 李鹄鸣 ( , 416000) : 对引自湖北武当山湖南南部和西北部 12 个居群盾叶薯蓣 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 叶和块茎中 皂苷元含量. 结果表 明: 1) 在置信水平 K= 8. 034 0 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 º 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 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% . : 盾叶薯蓣 形态变异 模糊聚类分析 生长状况 皂苷元 : Q945 : A : 1007-7847( 2003) 01- 0058-07 Studies on the Growth and Morphological Variation of Leaves and Sapogenin Content of Dioscorea zingiberensis C. H. Wright from Different Populations LI Zhao-yang, YANG Zhao-xia, CHEN Gong-xi, LIU Hu-i bing, LI Hu-ming ( College of Resources and Environmental Sciences, Jishou University , Jishou 416000, Hunan, China) Abstract: Tw elve populations of Dioscoreazingiberensis C. H. Wright from the Wudang Mountain of Hubeisouthern and northw est mountain of Hunan and yarn growth area were collected and cultivated in the greenhouse of the Insti- tute of Ecology of Jishou University . Their growth status and main morphological characteristics of leaves were ob- served and analyzed. And the disogenin and yamogenin contents of twelve populat ions w ere determined. The results showed : 1) Tw elve main morphological characters of leaves w ere classif ied w ith fuzzy cluster analysis, when the con- fidence level ( K) was 8. 034 0 the populations were d