罗汉果遗传性状变异、相关及通径分析  

Genetic variation,correlation and path analysis of Siraitia grosvenorii germplasm characters

作　　者：莫长明[1] 马小军[1] 齐力旺[2] 白隆华[1] 石磊[3] 冯世鑫[1] 

机构地区：[1]中国医学科学院中国协和医科大学药用植物研究所广西分所 [2]中国林业科学研究院林业研究所 [3]广西大学林学院

出　　处：《北京林业大学学报》2008年第4期121-125,共5页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(30560183);国家科技攻关计划课题(2004BA721A29);“十一五”国家科技支撑计划项目(2006BAI09B01)

摘　　要：为了深入了解罗汉果种质遗传改良潜力和探讨性状遗传相关关系,该文采用完全随机区组试验设计,系统调查18个罗汉果无性系种质的26个性状,并进行方差、主成分、相关和通径分析。结果表明:这些种质的26个性状中,有25个性状均存在较大遗传变异,且在长势、生育期、营养品质、产量及甜苷方面变异突出,具有良好的遗传改良潜力;单果重与果纵径呈极显著正相关;总苷含量与果形呈极显著正相关。故高产品种选育应高度关注果纵径,选择果纵径较长的株系;高总苷含量品种选育应高度关注果形指数,选择果形指数较大的株系。To explore potential of genetic improvement and relation of genetic characters in 18 clonal lines of Siraitia grosvenorii germplasms, their 26 characters were investigated by analysis of variance, principal component, correlation and path analyses in a randomized complete block experiment. The results indicate that 25 characters among 26 characters were greatly different from each other in these germplasms. Furthermore, the variations in growth vigour, growth period, nutritional quality, yield and mogroside content were significantly and these germplasms had good potential for genetic improvement. In addition weight per fruit had a very significantly positive correlation with fruit longitudinal diameter, while total mogroside content had a very significantly positive correlation with fruit shape. Our conclusion is that the fruit longitudinal diameter for breeding a high yield variant is important, and the index of fruit shape for obtaining a variant with high total mogroside content is valuable.

关 键 词：罗汉果 性状变异 主成分分析 相关分析 通径分析 

分 类 号：S603.2[农业科学—园艺学]