李林光;李芳东;王颖;王玉霞;李慧峰;杨建明;张志宏;

• 1:山东省果树研究所
• 2:沈阳农业大学园艺学院
• 3:吉林农业大学园艺学院

摘要(Abstract)：

以同源四倍体品种天星、烟嘎1号和对应的二倍体品种富士、烟嘎1号为试材,研究了苹果四倍体品种叶绿素荧光参数的日变化规律。结果表明,初始荧光(Fo)、最大荧光(Fm)、PS II原初光能转化效率(Fv/Fm)、PSⅡ的潜在光化学效率(Fv/Fo)、以吸收光能为基础的光合性能指数(PI)均存在明显的日变化。其中Fm、Fv/Fm和Fv/Fo变化趋势基本一致,总体上呈先下降后上升趋势,14:00降到最低值,且四倍体品种的下降较二倍体品种明显,傍晚有回升,但仍比早晨低;四倍体品种Fo呈明显的双峰曲线,而二倍体品种总体呈单峰曲线,最大值均出现在14:00;PI日变化均表现为‘下降-升高-下降’变化。说明不同倍性苹果品种防御强光破坏的主要机制可能不同。

关键词(KeyWords)： 苹果;四倍体;叶绿素荧光;日变化;光抑制

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑项目(2008BAD92B01-4);; 山东省农业良种工程项目

作者(Author): 李林光;李芳东;王颖;王玉霞;李慧峰;杨建明;张志宏;

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DOI:

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