摘要
依照魔芋DUS测试方法,对引进的珠芽魔芋种质资源进行叶柄和球茎等性状特征记录,共分类出 15 份珠芽魔芋种质资源;基于各种质资源的性状开展多样性分析、相关性分析、主成分分析和综合评价.结果表明:12 个赋值后的形态性状中叶柄主色的多样性指数最大,叶柄表面质感的多样性指数最小;10 个形态和品质性状中繁殖系数的变异系数最大,叶面半径的变异系数最小;叶面半径与叶柄基部直径、淀粉含量与氨基酸含量均表现为极显著正相关,叶柄基部直径与小叶数表现为显著正相关;主成分分析提取了生长势因子、葡甘聚糖(KGM)含量因子和干物质含量因子;以弥勒魔芋(ED43)为对照,筛选出FD21、CO32、JF32、AD21、AE31、JD51 等 6 份种质材料,可作为选育优良珠芽魔芋品种的材料资源.
Abstract
The introduced germplasm resources of Amorphophallus bulbifer(Roxb.)Blume were subjected to the DUS test focusing on petiole and corm traits,and a total of 15 germplasm resources were identified.Diversity analysis,correlation analysis,principal component analysis,and comprehensive evaluation were performed based on the traits of various germplasm resources.The findings indicated that among the 12 morphological traits assigned,petiole primary color showed the highest diversity index and petiole smoothness were with the lowest diversity index.Among the 10 morphological and quality traits,reproduction coefficient had the highest coefficient of variation and leaf radius showed the lowest coefficient of variation.Moreover,highly significant positive correlations were observed between leaf radius and petiole base diamater and between starch and amino acid content,while significant positive correlations were observed between petiole base diameter and the number of small leaves.Growth potential,konjac glucomannan content,and dry matter content were highlighted in principal component analysis.With A.bulbifer ED43 as the control,six germplasm materials,including FD21,CO32,JF32,AD21,AE31,and JD51,were selected for the breeding of excellent A.bulbifer cultivars.
基金项目
广东省企业技术服务项目(2022xczx-035)
国家科技期刊平台
NSTL
维普
万方数据