| 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 |
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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
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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 |
