| 5-氮杂胞苷对低温胁迫下黄瓜幼苗光合作用的影响 |
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| 引用本文： | 邢潇晨,索琳格,肖春燕,刘苗苗,刘慧英,崔金霞.5-氮杂胞苷对低温胁迫下黄瓜幼苗光合作用的影响[J].干旱地区农业研究,2017,35(6):116-123. |
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| 作者姓名： | 邢潇晨 索琳格 肖春燕 刘苗苗 刘慧英 崔金霞 |
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| 作者单位： | Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China,Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China,Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China,Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China,Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China and Department of Horticulture, College of Agriculture, Shihezi University； Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China |
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| 基金项目： | 国家自然科学基金项目(31160404)；石河子大学高层次人才科研启动资金专项(RCZX201213) |
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| 摘 要： | 为探究降低基因组DNA甲基化水平在低温条件下对黄瓜幼苗光合作用的影响,以‘津研四号’黄瓜幼苗为试材,研究了不同浓度DNA甲基化抑制剂5-aza C处理对低温(10℃/6℃,300μmol·m~(-2)·s~(-1))胁迫下黄瓜幼苗叶片气体交换参数、叶绿素荧光猝灭、细胞膜透性的影响。结果表明:低温条件下,500~800μmol·L~(-1)的5-aza C处理能够显著降低黄瓜幼苗叶片细胞膜透性(P0.05);提高叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr),降低胞间CO_2浓度(Ci);同时也促进PSⅡ的最大光化学效率(Fv/Fm)、实际光化学效率(ΦPSⅡ)、光合电子传递效率(ETR)和光化学猝灭系数(qP)的升高,非光化学猝灭系数(NPQ)和叶片光化学猝灭参数Y(NO)]的降低,从而提高黄瓜幼苗的耐冷性。
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| 关 键 词： | 黄瓜幼苗 5-氮杂胞苷 低温 光合作用 耐冷性 |
Effect of 5-azacytidine on photosynthesis of cucumber seedlings under low temperature and light intensity |
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| XING Xiao-chen,SUO Lin-ge,XIAO Chun-yan,LIU Miao-miao,LIU Hui-ying,CUI jin-xia.Effect of 5-azacytidine on photosynthesis of cucumber seedlings under low temperature and light intensity[J].Agricultural Research in the Arid Areas,2017,35(6):116-123. |
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| Authors: | XING Xiao-chen SUO Lin-ge XIAO Chun-yan LIU Miao-miao LIU Hui-ying CUI jin-xia |
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| Abstract: | |
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| Keywords: | cucumber seedling 5-azaC low temperature photosynthesis cold tolerance |
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