摘要
本文研究了不同NaCl浓度(0(CK)、0.1%、0.3%、0.5%))处理对不同葡萄品种叶片中叶绿素荧光参数的影响。结果表明:随盐胁迫浓度的增加,可变荧光(Fv)、最大荧光(Fm)、可变荧光与最大荧光比(Fv/Fm)、可变荧光与初始荧光比(Fv/F0)、光化学淬灭系数(qP)均降低,而初始荧光(F0)升高,非光化学淬灭系数(NPQ)不同品种间反应不同,说明光系统Ⅱ受到了伤害,使得PSⅡ原初光能转换效率、PSⅡ潜在活性降低;光合电子传递、光合原初反应过程受到抑制。盐胁迫下各品种间叶绿素荧光参数变化幅度为:双优>双丰>贝达>京优,说明双丰和双优叶绿素荧光参数受盐害影响要大于京优。
In this paper, the effect of different concentrations NaCl （0 （CK） . 0.1%. 0.3%. 0.5%） ） on chlorophyⅡ fluorescence parameters of leaf in different grape varieties was studied. The results showed the variable fluorescence （Fv）. maximum fluorescence （Fro）. the ratio of the variable to maximum fluorescence （Fv/Fm）, the ratio of the variable to minimal fluorescence （Fv/F0） and the photochemical quenching coefficient （qP） of leaf decreased with increase of salt concentrations, while the minimal fluorescence （Fo） increased and non-photochemical quenching coefficient （NPQ） of the varieties varied differently. These results suggested that photosystem Ⅱ could be damaged, causing some decrease of primary light energy conversion and potential activities of PS Ⅱ and inhabitation of photosynthetic electron transport and primary photosynthetic reaction. The change amplitude of the cultivars can be summarized as： Shuangyou 〉 Shuangfeng 〉 Beta 〉 Jingyou, indicating that chlorophyll fluorescence parameters of Shuangyou and Shuangfeng were affected by salt stress more seriously.
出处
《中外葡萄与葡萄酒》
2010年第3期35-38,共4页
Sino-Overseas Grapevine & Wine
基金
现代农业产业技术体系建设专项资金资助(nycytx-30-01)
山葡萄种质资源更新复壮与利用(农业部NB09-2130135-12)
关键词
葡萄
盐胁迫
叶绿素荧光
光系统Ⅱ
耐盐性
grape
salt stress
chlorophy Ⅱ fluorescence
photosystem Ⅱ
salt resistance
