ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (6): 90-99. doi: 10.7668/hbnxb.20191258

Special Issue: Wheat Drought and water saving

• Tillage and Cultivation·Physiology and Biochemistry • Previous Articles     Next Articles

Relationship Analysis of Chlorophyll Fluorescence Parameters and Drought Resistance in Different Winter Wheat Varieties at Seedling Stage

WU Shanshan1, XU Xuexin1, ZHANG Xia1, GE Hongmei2, ZHAO Changxing1, WANG Weihua1, SHI Yan1, ZHAN Yuan1   

  1. 1. Shandong Province Key Laboratory of Rainfed Agriculture Technology, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China;
    2. Qingdao Agricultural Scientific Research Institute, Qingdao 266100, China
  • Received:2020-08-07 Published:2020-12-28

Abstract: In order to explore a fast and efficient way to screen drought-resistant varieties of winter wheat, and to select drought-resistant winter wheat varieties. Six winter wheat varieties, Yannong 999, Taimai 1918, Jimai 22, Jimai 23, Taishan 27 and Shiluan 02-1 were used in this study. Normal water treatment(75% relative soil water content), mild drought treatment(55% relative soil water content) and moderate drought treatment(40% relative soil water content) were arranged to explore the chlorophyll fluorescence parameters, biomass, root-shoot ratio, SPAD, superoxide dismutase(SOD) activity, malondialdehyde(MDA) content and their correlations. Results showed that, compared with other varieties, under drought stress, Taimai 1918 obtained the highest drought resistance coefficient(DTC). The smallest reduction of root to shoot ratio, SPAD value, photosystem Ⅱ maximum photosynthetic efficiency(Fv/Fm), photosystem Ⅱ actual photosynthesis efficiency(φPSⅡ), relative electron transfer rate(ETR), SOD, and the largest increasing in non-photochemical quenching(NPQ) and minimal increasing in MDA content were observed in Taimai 1918. The order of drought resistance of 6 winter wheat varieties was Taimai 1918 > Yannong 999 > Jimai 22 > Jimai 23 > Taishan 27 > Shiluan 02-1. The chlorophyll fluorescence parameters were significantly correlated with drought resistance coefficient, SOD activity and MDA content. Sum up, the drought resistance in Taimai 1918 was strongest, and chlorophyll fluorescence parameters can be used for screening drought-resistant winter wheat varieties at seedling stage.

Key words: Winter wheat, Drought resistance, Chlorophyll fluorescence, Seedling stage, Variety screening

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Cite this article

WU Shanshan, XU Xuexin, ZHANG Xia, GE Hongmei, ZHAO Changxing, WANG Weihua, SHI Yan, ZHAN Yuan. Relationship Analysis of Chlorophyll Fluorescence Parameters and Drought Resistance in Different Winter Wheat Varieties at Seedling Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(6): 90-99. doi: 10.7668/hbnxb.20191258.

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