作　　者： ; ; ; ; (傅玉凡）;

机构地区： 西南大学生命科学学院

出　　处： 《西南师范大学学报（自然科学版）》 2011年第3期166-171,共6页

摘　　要： 采用色价法对紫色甘薯和普通白心甘薯共14个品种(品系)的色素含量和分布进行了检测和比较.结果表明:在不同的紫色甘薯品种(品系)中,色素的分布存在明显的差异;同一品种不同器官的色素含量也不相同,块根是紫色甘薯色素积累的主要器官;色素在块根内呈不均匀分布,表现为薯皮、初生形成层和木质部薄壁组织的色素含量不同,木质部薄壁组织内存在白色斑点.紫色甘薯色素在品种(品系)间分布的多样性为开展品种鉴定和遗传育种提供了丰富的种质资源,在器官和组织上分布的多样性为探讨色素合成与调控的细胞和分子机制奠定了试材基础. The distribution of the purple pigment in 14 strains between purple-fleshed and white-fleshed sweetpotato was investigated in this paper.The result showed that there were significant differences on pigment distribution in strains and organs.The storage root of purple-fleshed sweetpotato is the predominant organ accumulating pigment.The uneven distribution of pigment was detected in storage root,including the difference among the contents of pigment in peel,primary cambium layer and xylem parenchyma which appeared white spots.The difference of the contents of pigment also observed from morphology apex to morphology base in the trailing part of purple-fleshed sweet potato.The diversity of purple-fleshed sweet potato pigment distribution in different strains laid a technical foundation for carrying on the variety identification and genetic breeding.Moreover,the diversity of pigment distribution in different organs and tissues provided the materials for the investigation of pigment biosynthesis and the mechanism of manipulation.

关 键 词： 紫色甘薯 色素分布 品系 器官 多样性

领　　域： [农业科学]