甘肃农业科技Issue(2)：12-15,4.DOI:10.3969/j.issn.1001-1463.2015.02.005
低温冻害对玉米种子盾片超微结构的影响
The Effect of Freezing Injury on Ultrastructure of Scutellum in Corn Seed
摘要
Abstract
The effect of freezing injury on ultrastructure of scutellum in corn (Zea mays L.)seed is researched. The result shows that the normal structure of scutellum in corn seed is destroyed after the treatment of freezing injury. In the treatment of-10℃with 8 hours,the cell wall,plasma membrane,mitochondrion and protein bodies are injured in different degrees,some cells arose plasmolysis partially, the inside structure of mitochondrion become disordered and the crests are bushtailed and difficult to distinguish;Protein bodies are expanded and figured as a vacuole. In the treatment of -20 ℃ with 8 hours,ultrastructure of the plasma membrane,mitochondrion,protein bodies and all kinds of cellular organs are damaged badly. A lot of cells arose plasmolysis obviously,plasma membrane is destroyed and its function of diosmosis adjusting is lost,a part of cellular liquid osmosesed from cytoplasm and cellular cellular liquid osmosesed from cytoplasm and filled in the space between cell wall and plasma membrane;Lipoids almost vanished;The nuclear membranes are destroyed and disintegrated,nucleolus are highly condensed;The membrane of mitochondrion is destroyed,the quantity of crests in mitochondrion decreased,even wholly mitochondrion is disjointed;Because a series of bio-membrane system is destroyed,the cells are full of vesicles,even cell wall ruptured and the organ remains osmosesed to intercellular space.关键词
低温冻害/玉米杂交种种子/盾片/超微结构Key words
Freezing injure/Corn seed/Scutellum/Ultrastructure分类
农业科技引用本文复制引用
郑琪,王威..低温冻害对玉米种子盾片超微结构的影响[J].甘肃农业科技,2015,(2):12-15,4.基金项目
甘肃省自然科学基金项目（1308RJYL069）部分内容 （）
