苏丹草与高粱的判别分析和聚类分析  

Discrimination Analysis and Cluster Analysis of Sorghum sudanense and S.bicolor

作　　者：杨小翠[1] 詹秋文[1] 刘言龙 李杰勤[1] 林平[1] 

机构地区：[1]安徽科技学院农学院,安徽凤阳233100

出　　处：《中国草地学报》2016年第1期41-46,共6页Chinese Journal of Grassland

基　　金：国家自然科学基金(31301383;31071470);科技部"十二五"农村领域国家科技计划课题(2011BAD17B03);安徽省级学科建设重大项目(皖教秘科〔2014〕28号);安徽科技学院作物学重点学科经费资助(AKZDXK2015A03)

摘　　要：为探讨苏丹草和高粱的遗传亲缘关系,调查了苏丹草和高粱及其近缘植物共48个品种的54个生物学性状。判别分析结果表明,240个试验个体均100%被正确回判到原始群体中,每份品种个体选择有效。48个品种在所有数量性状上的差异是明显的,达到极显著水平,说明这些性状指标用于判别和聚类分析是合理的。聚类分析表明:当以欧氏距离为17.46作为分类标准时,参试的48个品种被明显划分成两大类即玉蜀黍属(39、40号品种)和高粱属(其余46份品种);当欧氏距离为9.86时,48个品种被划分成4类,即高粱和苏丹草、高粱近缘种、墨西哥玉米和玉米。即使以欧氏距离8.91作为分类标准,苏丹草与高粱仍不能完全分开。因此,建议将苏丹草分类为双色高粱种苏丹草亚种。Fifty-four biological characters were used for quantitative classification of sorghum and sudangrass and their relatives.Discrimination analysis of all 240 individuals of 48 accessions suggested that100% of originally grouped cases were correctly classified.Analysis of variance results showed that the differences among 48 accessions in characters were significant at 0.01 level.Cluster analysis showed that48 accessions were obviously divided into two clusters by a Euclidean distance of 17.46 as the classification standards,i.e.the genus maize and genus sorghum;and 48 accessions were divided into four clusters by a Euclidean distance of 9.86,i.e.sorghum and sudangrass,sorghum related species（S.propinquumand S.halepense）,Zea mexicana and Z.mays.The sudangrass and sorghum varieties did not form two different groups even by a Euclidean distance of 8.91.Sudangrass should be a subspecies,S.bicolor（L）Moench subsp.sudanense.

关 键 词：苏丹草 高粱 数量分类 判别分析 聚类分析 

分 类 号：S544[农业科学—作物学]