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园艺学报 ›› 2006, Vol. 33 ›› Issue (3): 601-604.

• 研究简报 • 上一篇    下一篇

短时间高温对‘曙光’油桃芽自然休眠调控的研究

王海波1, 2;高东升1*;王孝娣3;李 疆2*   

  1. (1山东农业大学园艺科学与工程学院, 山东泰安271018; 2新疆农业大学园艺学院, 新疆乌鲁木齐830052; 3中国农业科学院果树研究所, 辽宁兴城125100)
  • 收稿日期:2005-09-13 修回日期:2005-10-20 出版日期:2006-06-25 发布日期:2006-06-25

Effects of Short-term Heating on Bud Dormancy in‘Shuguang’Nectarine Tree

Wang Haibo1, 2;Gao Dongsheng1*;Wang Xiaodi3;Li J iang2*   

  1. (1College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China; 2College of Horticulture, Xinjiang Agricultural University, Urmuqi, Xinjiang 830052, China; 3 Fruit Research Institute, Chinese Academy of Agricultural Sciences, Xingcheng, Liaoning 125100, China)
  • Received:2005-09-13 Revised:2005-10-20 Online:2006-06-25 Published:2006-06-25

摘要: 以6年生曙光油桃/青州冬雪蜜桃为试材, 研究40、45、50℃高温短时间处理对花芽和叶芽的存活率、萌芽级数、自由水/束缚水比值和膜透性的影响, 探讨短时间高温对桃芽自然休眠的调控效应。结果表明: 11月30日40℃高温对桃芽自然休眠呈负调控效应, 并随处理时间的延长调控效应增强, 其萌芽级数、束缚水/自由水比值及相对电导度均低于对照; 45℃和50℃高温各处理对桃芽自然休眠呈正调控效应, 并随处理时间的延长调控效应增强, 其萌芽级数、自由水/束缚水比值和相对电导度与对照相比明显升高, 虽然部分花芽和叶芽因高温处理而死亡, 但是在存活芽中短时间高温对桃芽休眠解除作用明显增强。12月10日40℃高温处理对桃自然休眠的调控效应不明显, 45℃和50℃高温各处理和11月30日高温各处理相同, 也具有正调控效应, 只是前者对桃芽自然休眠的调控效果优于后者。不同高温处理的萌芽级数、自由水/束缚水比值和膜透性的变化及之间的相关性分析表明, 水分由束缚态向自由态的转变以及膜透性的增加可能是高温解除休眠的原因。

关键词: 油桃, 短时间高温, 自然休眠,

Abstract: Effects of short-term heating at 40, 45 and 50℃ on bud livability, bud burst, the ratio of free water and bound water and membrane permeability in‘Shuguang’nectarine tree were studied in order to know the mechanism of short-term heating releasing the endodormancy. On November 30, the date of endodormancy release was postponed, the bud burst, the ratio of free water and bound water and membrane permeability were lower on 40℃ - heating treatment. Whereas, 45℃ and 50℃ - heating treatment had the contrary effects. On December 10, 40℃ - heating treatment had the nearly same results as control on the above factors, and the effects of 45℃ and 50℃ - heating treatment on endodormancy release were the same as the treatment on November 30, and the effect of the formerwas superior to the latter. The correlation of the rate of bud burst, the ratio of free water and bound water, and membrane permeability of the different treatments indicated that the change from bound water to free water and the increase of membrane permeability were probably the cause of endodormancy release.

Key words: Nectarine, Short-term heating, Endodormancy, Bud