甘薯块根可溶性糖含量在生长期间的变化研究  

Variations in Soluble Sugar Content in the Storage Root of Sweetpotato During Its Development

作　　者：梁媛媛[1,2,3] 傅玉凡[1,2,3] 孙富年[1,2,3] 冷晋川[1,2,3] 张启堂[1,2,3] 

机构地区：[1]三峡库区生态环境教育部重点实验室,重庆400715 [2]西南大学重庆市甘薯研究中心,重庆400715 [3]西南大学生命科学学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2009年第6期20-25,共6页Journal of Southwest University(Natural Science Edition)

基　　金：国家支撑计划资助项目(2006BAD01A06-2-06);重庆市动植物良种创新工程资助项目(10379);西南大学高新技术培育基金资助项目(XSGX0608)

摘　　要：对9个甘薯品种在不同生长期块根可溶性糖含量的测定与分析表明:甘薯块根可溶性糖含量在整个生长期间的变化总趋势是生长前期(50 d左右)特别高,随后迅速降低,一般在100 d左右达到最低.生长中期稳定波动,生长末期再有缓慢上升.各生长期可溶性糖含量之间存在显著或极显著相关性.该研究结果为甘薯育种和产业化开发提供了一定的科学依据.Soluble sugar contents in the storage roots of nine sweetpotato varieties were measured in differ ent stages of their growth （50 d, 85 d, 108 d, 136 d an d 167 d） and the results indicated that soluble sugar content was very high in the early period of growth （about 50 d）, dropped sharply thereafter and reached the minimum around 100 d, then remained relatively stable with little fluctuation and, finally, rose slowly. There were significant or highly significant correlations between soluble sugar contents and developmental stages. These results may provide scientific basis for sweetpotato breeding and industrialization.

关 键 词：甘薯 块根 可溶性糖 生长期 

分 类 号：S531[农业科学—作物学]