不同温度对不同基因型棉花叶片叶绿素荧光的影响
发布时间：2019-05-31 17:45
【摘要】：【目的】在不同温度条件下,研究不同基因型棉花叶片叶绿素荧光特性指标的变化,为耐高温棉花品种的筛选提供理论依据。【方法】分别在25、30、35、40、45和48℃的恒温培养箱处理不同基因型棉花13-1品系、新海24号、13-1×新海24号(杂交种)、13-1×新海14号(杂交种),利用快速荧光测定仪(Handy PEA-100)测定不同基因型棉花叶片荧光特性主要参数。【结果】随着温度不断升高,性能指数PIABS、最大光化学Fv/Fm、电子传递产额φEo表现为先升高后降低,而热耗散DIO/CSO、初始荧光FO则先降低后升高;性能指数PIABS在40℃时4个不同棉花基因型棉花品系呈极显著,比Fv/Fm更准确地反映光合状况。【结论】利用隶属函数法分析4种不同基因型棉花品种(系),其中13-1×新海24号隶属函数值最高,属于耐热品系。
[Abstract]:[objective] to study the changes of chlorophyll fluorescence characteristics of cotton leaves at different temperatures. It provides a theoretical basis for the screening of high temperature tolerant cotton varieties. [methods] different cotton varieties 13 脳 1, 13 脳 1 脳 Xinhai 24 (hybrid) were treated with constant temperature incubator at 25, 30, 35, 40, 45 and 48 鈩，
本文编号：2489899
[Abstract]:[objective] to study the changes of chlorophyll fluorescence characteristics of cotton leaves at different temperatures. It provides a theoretical basis for the screening of high temperature tolerant cotton varieties. [methods] different cotton varieties 13 脳 1, 13 脳 1 脳 Xinhai 24 (hybrid) were treated with constant temperature incubator at 25, 30, 35, 40, 45 and 48 鈩，
本文编号：2489899
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