Effects of Zinc on the Active Oxygen Metabolism, Senescence and Yield of Peanut

doi:10.11924/j.issn.1000-6850.casb2023-0117

Abstract

Abstract:

To explore the regulatory mechanism of zinc fertilizer on active oxygen metabolism and senescence of peanut leaves, through field and indoor experiments, the effects of zinc fertilizer (ZnSO₄·7H₂O) application on senescence related parameters and yield of peanut during growth were studied. The results showed that with the increase of zinc application, the chlorophyll content, net photosynthetic rate, nitrate reductase activity, catalase activity and yield showed a trend of first increasing and then decreasing, and the photorespiration rate, Mehler reaction and malondialdehyde content showed a trend of first decreasing and then increasing. Proper application of zinc fertilizer can not only promote the removal of active oxygen, but also inhibit the production of active oxygen. Zinc fertilizer regulates peanut senescence through production and elimination of active oxygen.

Key words: peanut, senescence, zinc, reactive oxygen species, photorespiration, Mehler reaction

LI Haidong, JI Congcong, XU Yiping, KANG Tao, CHEN Jiansheng, ZHANG Yanyan, ZHANG Ling, LI Wenjin. Effects of Zinc on the Active Oxygen Metabolism, Senescence and Yield of Peanut[J]. Chinese Agricultural Science Bulletin, 2024, 40(4): 20-25.

Figures/Tables 8

References 32

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处理	荚果产量/(kg/hm²)	籽仁产量/(kg/hm²)
CK	4479.0c	2752.5c
T₁	4837.5b	3144.0b
T₂	5127.0a	3496.5a
T₃	4996.5ab	3331.5ab
T₄	4876.5b	3196.5b

处理	荚果产量/(kg/hm²)	籽仁产量/(kg/hm²)
CK	4479.0c	2752.5c
T₁	4837.5b	3144.0b
T₂	5127.0a	3496.5a
T₃	4996.5ab	3331.5ab
T₄	4876.5b	3196.5b