马铃薯薯形发育的组织细胞学研究  

Studies on Histocytology of Potato Tuber Shape Development

作　　者：王茜茹 惠志明 徐建飞[1] 段绍光[1] 卞春松[1] 金黎平[1] 李广存[1] WANG Qian-ru;HUI Zhi-ming;XU Jian-fei;DUAN Shao-guang;BIAN Chun-song;JIN Li-ping;LI Guang-cun(Key Laboratory for Tuber Crops Biology and Genetic Breeding,Ministry of Agriculture and Rural Affairs,Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]农业农村部薯类作物生物学和遗传育种重点实验室,中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《中国蔬菜》2020年第4期67-73,共7页China Vegetables

基　　金：国家自然科学基金项目(31561143006,31801421);国家马铃薯产业技术体系项目(CARS-9)。

摘　　要：薯形是马铃薯重要的农艺性状之一,马铃薯块茎形状在块茎发育的早期就已确定。选取长、圆薯形的马铃薯,在匍匐茎弯钩期、次顶端膨大期、块茎形成初期、块茎形成期4个块茎发生时期,制备石蜡切片并进行组织细胞学观察,研究长、圆薯形块茎发生时内部的形态变化。结果表明:匍匐茎弯钩期髓部组织的细胞层数差异可能是造成长、圆薯形差异的主要原因,而匍匐茎弯钩期可能是造成薯形差异的关键时期。Tuber shape is one of the important agronomic characters of potato.Potato tuber shape has con firmed at the early stage of tuber development.In order to study the internal morphological changes of long and round tubers,this paper selected tubers formed in 4 di fferent periods,including stem stalk hook period, apical bulging period,early tuber formation period,and tuber formation period to make para ffin sections to conduct histocytological observation.The result shows that the di fferences in cell layers of medullary tissue during stem stalk hook period might be the main reason leading to long or round di fferent tuber shapes.The stem stalk hook period might be the key period causing di fferences in tuber shapes.

关 键 词：马铃薯 块茎形状 石蜡切片 组织细胞学 

分 类 号：S532[农业科学—作物学]