山西农业大学学报（自然科学版）2017，Vol.37Issue(12)：841-848,8.
小麦胚乳充实与颖果运输组织的解剖学研究
Anatomical study on filling of wheat endosperm and development of transfer tissues in caryopsis
摘要
Abstract
[Objective] To clarify the structural relationship between wheat endosperm filling and caryopsis nutrient transfer tissues development.[Methods] Three main wheat cultivars in Lianyungang (Lianmai 8,Lianmai 7 and Shannong 20) were selected as materials and anthesis dates were labeled during the growth of wheat.Endosperm substance filling and structural characteristics of caryopsis nutrients transfer tissues were investigated by using resin slicing and microscopic observation technology.[Results]During the development of caryopsis,the increased weight of Lianmai 8 caryopses per day was the highest and its filling rate was the fastest followed by Lianmai 7 and Shannong 20.Among three wheat cultivars,starch granules and protein bodies were closely integrated in Lianmai 8 endosperm whose filling degree was the highest followed by Lianmai 7 and Shannong 20.Moreover,the nutrient transfer tissues development of Lianmai 8 was better than that of the other two wheat cultivars.Its vascular bundles were the strongest and transfer cells differentiated earliest,Resulting in strongest nutrient transport ability.[Conclusion]Nutrient transfer tissues of Lianmai 8 was well developed,which was beneficial to the input of grouting substance,leading to enhancement of starch and protein accumulation in endosperm.This may be the structural basis for better endosperm substance filling of Lianmai 8.关键词
小麦胚乳/物质充实/养分运输组织/显微结构Key words
Wheat endosperm/Substance filling/Nutrient transfer tissues/Microstructure分类
农业科技引用本文复制引用
王兵,熊飞,陈昕钰,徐德利,李国权,许光辉,王礼焦,李筠,董召娣,余徐润..小麦胚乳充实与颖果运输组织的解剖学研究[J].山西农业大学学报（自然科学版）,2017,37(12):841-848,8.基金项目
国家自然科学基金项目(31571573,31701351) （31571573,31701351）
江苏省农业三新工程项目(SXGC[2016] 128) （SXGC[2016] 128）
江苏省农业三新工程项目(SXGC[2017]089) （SXGC[2017]089）
