| 摘要: |
| 【目的】 研究1-甲基环丙烯（1-MCP）对不同采收期砀山酥梨黑皮病发病情况的影响。【方法】 以砀山酥梨（Dangshansu pear）为试材，对不同采收期（采收期Ⅰ：果实未成熟，为当地大量采收期；采收期Ⅱ：当地适宜采收期）的砀山酥梨果实,用1.0 μg/L 1-MCP密闭处理24 h后进行冷藏及常温贮藏，以未经1 MCP处理的果实为对照，测定果实贮藏期间的α-法尼烯、共轭三烯含量及呼吸速率、乙烯释放速率，并观察统计果实黑皮病的发生率和黑皮指数。【结果】 采收期Ⅰ的对照果实黑皮病发病时间较早，黑皮发生率和黑皮指数均较高；同一采收期，1.0 μg/L 1-MCP处理能推迟砀山酥梨果实黑皮病发生的时间，降低黑皮指数，显著抑制α-法尼烯及共轭三烯含量的增加；与采收期Ⅰ1-MCP处理果实相比，采收期Ⅱ1-MCP处理推迟了果实黑皮病发病时间，对果实黑皮发生率和黑皮指数的抑制作用较好；呼吸速率、乙烯释放速率、贮藏温度与果实黑皮病的发生呈正相关关系。【结论】 1-MCP处理对砀山酥梨果实黑皮病的发生有显著抑制作用，且对成熟果实的作用较未成熟果实明显。 |
| 关键词: 砀山酥梨 1-MCP 采收期 α-法尼烯 共轭三烯 黑皮病 |
| DOI： |
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| 基金项目:罗门哈斯（中国）公司资助项目 |
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| Effects of 1-MCP treatment on superficial scald of Dangshansu pear |
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XUE Shu hao,MENG Huan wen,CHENG Zhi hui,PENG Jing,
XIE Zhi chun,YU Yan hui,XUE Shu hao,MENG Huan wen,CHENG Zhi hui,PENG Jing,
XIE Zhi chun,YU Yan hui,XUE Shu hao,MENG Huan wen,CHENG Zhi hui,PENG Jing,
XIE Zhi chun,YU Yan hui
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| Abstract: |
| 【Objective】 The effects of 1-MCP treatment on superficial scald of Dangshansu pears with different maturity were studied. 【Method】 This experiment studied DangShansu pear picked at different harvesting time(harvestⅠ:initial mature period,a primary harvest time for local;harvestⅡ:the timely harvest time).After 24 h frozen of 1.0 μg/L 1-MCP treatment,pears were under both cold storage and room temperature storage,with not treated as the control.The indexes such as respiration rate,Ethylene production rate,α-farnesene ,conjugated trienes and superficial scald ratio and superficial scald index were determined and analyzed during storing period.【Result】 The results showed that the fruits picked at Ⅰ had a high superficial scald ratio and superficial scald index,and superficial scald appeared earlier;at the same harvesting time,the treatment of 1.0 μg/L postponed the time of superficial scald,reduced superficial scald index,and significantly inhibited the increase of both contents of α-farnesene and conjugated trienes;1-MCP treatment of the fruits of harvest Ⅱ postponed the time of superficial scald,and had more obvious effects of inhibiting superficial scald ratio and superficial scald index;respiration rate,ethylene production rate and store temperature were positive to the degree of scald development.【Conclusion】 The inhibition effects of 1-MCP treatment on pear storage of different harvests are obviously different,more obvious on the mature fruits than immature. |
| Key words: Dangshansu pear 1-MCP harvest time α-farnesene conjugated triene superficial scald |
