不同处理对猕猴桃采后生理和细胞超微结构的影响  

Effects of different treatments on the post-harvest physiology and cell ultrastructure of kiwifruit

作　　者：任亚梅[1] 刘兴华[1] 徐春雅[1] 张晓平[2] 岳田利[1] 

机构地区：[1]西北农林科技大学食品科学与工程学院,杨凌712100 [2]西北农林科技大学园艺学院,杨凌712100

出　　处：《农业工程学报》2008年第7期217-221,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家西部专项(2001BA901A19)

摘　　要：为探索采后猕猴桃果实软化衰老机制及控制途径,以"秦美"猕猴桃为试材,研究了1μL/L1-MCP(1-甲基环丙烯)处理和1μmol/LNO处理对其采后生理和细胞超微结构的影响。结果表明:1-MCP处理与对照相比,极显著地抑制了果实的变软,对果实可溶性固形物含量的增加没有显著影响,使果实保持较高的POD活性,推迟SOD和POD活性高峰的出现,但对POD和SOD活性大小变化的影响不显著,明显延缓了果肉细胞壁的分解和叶绿体的解体,比对照在(0±1)℃的贮藏时间延长了12w。NO处理与对照相比,对果实变软、果实可溶性固形物含量增加、SOD和POD的活性变化有显著影响,对果肉细胞壁的分解和叶绿体的解体有一定延缓效果,比对照延长贮藏时间28d。1μL/L1-MCP对秦美猕猴桃的保硬和保绿效果优于1μmol/LNO。The purpose of this research was to compare the effects of contrast, 1 μI/L 1-MCP（1-methylcyclopropene） treatment and 1 μmol/L NO treatment on the post-harvest physiology and cell ultrastructure of ‘Qinmei＇ kiveifruit at （0±1） ℃ storage. Results indicate that the hardness of kiwifruit has extreme significant difference, and total soluble solids content has no significant difference between contrast and 1-MCP treatment, 1μl/L 1-MCP treatment can alleviate fruit＇s ripening and softening significantly, and delay the maximum enzyme activity producing time. But the change of POD and SOD enzyme activity has no significant difference between contrast and 1-MCP sealed treatment, It also alleviate the degeneration of cell wall and chloroplast, the storage time is prolonged 84 days. The hardness and total soluble solids content have significant different between contrast and 1 μmol/L NO sealed treatment, 1 μmol/L NO treatment could alleviate fruit＇s ripening and softening too, and delay the maximum enzyme activity producing time. The change of POD and SOD enzyme activity has significant difference between contrast and NO sealed treatment, It also can alleviate the degeneration of cell wall and chloroplast, the storage time is prolonged 28 days. μl/L 1-MCP sealed 24 h has much better effect than 1 μmol/L NO sealed 3 h of ‘Qinmei＇ kiwifrui on alleviating ripening, softening and degeneration of cell wall and chloroplast.

关 键 词：猕猴桃 1-MCP NO 采后生理 超微结构 

分 类 号：S663.4[农业科学—果树学]