Physiological Regulation Effect of Feather Biodegradation Liquid on Chinese Cabbage Growth in Response to Salt Stress

doi:10.11924/j.issn.1000-6850.casb2021-0893

Abstract

Abstract:

The paper aims to study the application of feather biodegradation liquid (FBL) in alleviating salt stress. Saline soil pot experiment was conducted to analyze the effects of FBL containing different amino acid concentrations (0, 0.1, 0.2, 0.4, 0.8 g/L) on the growth and physiological indexes of Chinese cabbage under salt stress (0.4% NaCl). The results showed that the fresh weight of the aboveground part of Chinese cabbage after root watering FBL was significantly higher than that with no FBL and had no difference with that of CK (no salt treatment). The treatment of 0.4 g/L free amino acid in FBL showed the best growth index. FBL significantly reduced malondialdehyde (MDA) content and significantly increased the activities of peroxidase (POD) and ascorbate peroxidase (APX) in cabbage leaves. Proline concentration increased significantly with the increase of free amino acid concentration in FBL. Soluble protein content increased significantly after FBL application. In conclusion, exogenous FBL can improve the activity of antioxidant enzymes in leaves, increase the content of osmotic regulation substances, and alleviate the damage of salt stress on Chinese cabbage. The optimal free amino acid concentration is 0.4 g/L. The experimental results provide a theoretical basis for the production of Chinese cabbage in secondary salinized soil and saline-alkali land.

Key words: feather biodegradation liquid, amino acid, salt stress, Chinese cabbage, physiological regulation

CLC Number:

S141.7，S311

GUO Dongsen, WANG Lin, WEI Qishun, CUI Lianming, ZHOU Ying, GUO Chengbao. Physiological Regulation Effect of Feather Biodegradation Liquid on Chinese Cabbage Growth in Response to Salt Stress[J]. Chinese Agricultural Science Bulletin, 2022, 38(25): 25-29.

Figures/Tables 5

References 31

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