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园艺学报 ›› 2009, Vol. 36 ›› Issue (3): 421-426.

• 研究简报 • 上一篇    下一篇

夜间温度对薄皮甜瓜果实膨大及多胺含量的影响

李天来*;郝敬虹;杜 哲;王延迪
  

  1. (沈阳农业大学园艺学院,辽宁省设施园艺重点实验室,沈阳 110161)
  • 收稿日期:2008-10-09 修回日期:2009-02-27 出版日期:2009-03-25 发布日期:2009-03-25
  • 通讯作者: 李天来

Effects of Night Temperature on Fruit Expansion and Polyamine Content in Melon

LI Tian-lai*,HAO Jing-hong,DU Zhe,and WANG Yan-di   

  1. (College of Horticulture, Shenyang Agriculture University, Liaoning Key Laboratory of Protected Horticulture,Shenyang 110161, China)
  • Received:2008-10-09 Revised:2009-02-27 Online:2009-03-25 Published:2009-03-25
  • Contact: LI Tian-lai

摘要: 为探讨果实内源多胺对温度胁迫的响应及其与果实膨大之间的关系,以薄皮甜瓜(Cucumis melo L.)'玉美人'为试材,研究了不同夜间温度对果实膨大及内源多胺含量的影响。结果表明,12 ℃处理的单果质量、果实横径、纵径最大,其次是15 ℃处理,18 ℃处理的单果质量、果实横径、纵径显著低于15 ℃处理,而9 ℃处理又显著低于18 ℃处理。从果实多胺含量变化情况看,除精胺外,果实总多胺、亚精胺、腐胺均随着果实的发育而减少,但不同夜温处理间存在差异,在夜温处理6 d内的果实快速膨大期,腐胺、亚精胺、精胺和总多胺含量均是9 ℃夜温处理显著低于12 ℃、15 ℃和18 ℃处理,18 ℃处理又显著低于12 ℃和15 ℃处理,而15 ℃和12 ℃处理间无显著差异。腐胺、亚精胺、总多胺含量与单果质量增长率呈显著或极显著正相关。这些结果说明夜间温度对薄皮甜瓜果实膨大的影响可能与多胺含量的变化有关。

关键词: 薄皮甜瓜, 夜间温度, 果实膨大, 多胺

Abstract: To probe into the response of endogenous polyamine to temperature stress and the relationship between endogenous polyamine and fruit expansion, The effects of different night temperatures on fruit expansion and polyamines were analyzed with Cucumis melo L. 'Yu Meiren' as material. The results showed that single fruit weight, transverse length and vertical length after 12 ℃ in night were biggest, that after 15 ℃ in night were the second, and the single fruit weight, transverse length and vertical length after 18 ℃ in night were significant smaller than that after the treatment of 15 ℃ in night, whereas the single fruit weight, transverse length and vertical length after 9 ℃ in night were remarkable smaller than that after the treatment of 18 ℃ in night. Meanwhile, the change of PA content in fruit indicated that the contents of total PA, Spd, Put decreased during fruit development, while the difference among night temperatures was lied. The contents of Put, Spd, Spm, total PA were lowest in six days after the treatment of 9 ℃ in night, and that of 18 ℃ in night was remarkable lower than that of 12 ℃ and 15 ℃ in night. Moreover, the difference between 12 ℃ and 15 ℃ in night was not significant . In addition, Put、Spd and total PA content in fruit was positively correlated to the increment rate of melon single fruit. These results suggested that the effect of high or low temperature on fruit expansion may be related with the change of PAs in fruit.

Key words: Melon, night temperature, fruit expansion, polyamine

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