Priming of Drought on the Antioxidant Characteristics of Wheat Seedlings

doi:10.7668/hbnxb.20192270

Abstract

Abstract: In order to explore the effects of drought priming on antioxidant properties of wheat seedlings, control treatment and drought training treatment were set up in this experiment. PEG6000 nutrient solution was used for drought training when one heart and one leaf, and then Hoagland's total nutrient solution was restored. When three leaves are one heart, the drought stress is treated separately, and the dynamic changes of the substances related to the antioxidant properties in the young leaves were observed. The results showed that with the increase of drought degree and stress time, SOD, POD activity and soluble protein decreased, but MDA and soluble sugar content increased significantly. Compared with the control, the leaf SOD, POD activity and soluble protein decreased less after drought exercise, the soluble sugar content increased more, and the MDA increased less. Under the different drought stress, the antioxidative capacity of drought-stressed wheat under 25% PEG6000 stress was higher than that of 35% PEG6000. This showed that a certain concentration of drought training in wheat can significantly enhance its ability to adapt to drought conditions, which was beneficial to the growth of the seedling stage and provides theoretical support for the research on wheat resistance.

Key words: Wheat, Seedling stage, Drought priming, Antioxidant properties

CLC Number:

S512.01

WAN Xuejie, ZHANG Yan, SHI Changhai, ZHOU Xuancai, SUN Xinling, LI Songjian, ZHANG Shoufu, LIU Yiguo. Priming of Drought on the Antioxidant Characteristics of Wheat Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(S1): 125-129. doi: 10.7668/hbnxb.20192270.

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