干旱胁迫对老芒麦苗期叶绿素荧光特性的影响

doi:10.12190/j.issn.2096-1197.2020.04.19

Abstract

Abstract: 【Objective】 To study the effect of drought stress on the chlorophyll fluorescence characteristics of Elymus sibiricus at seedling stage,so as to provide theoretical basis for the cultivation and production of Elymus sibiricus.【Methods】 Wild Elymus sibiricus and two Elymus sibiricus strains as materials,the effects of PEG-6000 stress on the chlorophyll fluorescence characteristics of Elymus sibiricus at seedling stage were observed by simulating drought stress with different PEG-6000 concentrations.【Results】 With the increase of PEG-6000 concentration,the Y（Ⅱ）,Fv/Fm,Fm and qP values of three kinds of Elymus sibiricus leaves decreased,and the Fo and qN values increased;the decrease of Fv/Fm values and the increase of Fo values of new strain Elymus sibiricus were smaller than those of Hulun Buir Elymus sibiricus and Chuancao No.2 Elymus sibiricus.【Conclusion】 The drought resistance ability of new strain Elymus sibiricus was stronger.

Key words: Elymus sibiricus, Drought stress, Seedling stage, Chlorophyll fluorescence characteristics

CLC Number:

Q949.714.2

TIAN Yonglei, BAI Chunli, DING Haijun, ZHAO Heping, FANG Yongyu, MU Zongjie. Effects of drought stress on chlorophyll fluorescence parameters of Elymus sibiricus seedlings stage[J].Journal of Northern Agriculture, 2020, 48(4): 116-120.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2020.04.19

https://journal30.magtechjournal.com/bfnyxb/EN/Y2020/V48/I4/116

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Effects of drought stress on chlorophyll fluorescence parameters of Elymus sibiricus seedlings stage

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