| 摘要: |
| 以秦光2号油桃为供试材料,在不同贮藏温度(1,3,5和7 ℃)下,研究了油桃果实的冷害生理。结果表明,油桃对不同冷害温度的敏感性不同,以5 ℃时最为敏感,在该温度下贮藏10 d即表现出冷害症状;冷害发生后,超氧化物岐化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性均显著降低,果实的褐变指数、相对膜透性和丙二醛(MDA)含量升高;冷害使油桃果实的硬度在贮藏后期异常增加,呼吸和乙烯代谢异常(二者的最大值提前10 d出现);冷害发生后,油桃果实可溶性固形物含量无明显变化。 |
| 关键词: 油桃 冷害生理 低温贮运 采后贮藏 |
| DOI： |
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| 基金项目:陕西省科技攻关项目 2005K01-G12-01 |
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| Studies on chilling injury physiology of nectarines at different storage temperature |
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| Abstract: |
| In this paper,the changes of CII,BI,respiration,ethylene production, flesh firmness,soluble solids content,relative membrane permeability,MDA content and activities of SOD,POD and CAT of nectarines at different chilling injury temperature were studied.The results showed that the susceptibility of chilling injury（CI）of nectarines was various at different storage temperature,and was the most sensible to the chilling injury at 5 ℃,the activities of SOD,POD and CAT were significantly reduced,while the BI,relative membrane permeability and the content of MDA were enhanced.Chilling injury induced the decompensation of respiration and ethylene production,and brought the appearance of respiration peak and the ethylene peak 10 days earlier than control.However,there was no remarkable change of the total soluble solids in nectarines. |
| Key words: nectarines,chilling injury physiology,storage at low temperature,storage after harvest |
