盐胁迫下外源赤霉素对糯玉米幼苗生理特性的影响

doi:10.19640/j.cnki.jtau.2022.01.008

Journal of Tianjin Agricultural University ›› 2022, Vol. 29 ›› Issue (1): 37-41.doi: 10.19640/j.cnki.jtau.2022.01.008

• Researches and Scientific Notes • Previous Articles Next Articles

Effects of exogenous gibberellin on physiological characteristics in waxy maize seedlings under salt stress

Ding Jianwen¹, Zhang Xiaochen¹, Yang Xing¹, Du Jin², Cao Gaoyi², Xiang Chunyang^{2,Corresponding Author}

1. Tianjin Zhongtian Runnong Technology Co., Ltd., Tianjin 300000, China;
2. College of Agronomy and Resources Environment, Tianjin Agricultural University, Tianjin 300392, China

Received:2021-02-19 Online:2022-03-31 Published:2022-04-14

Abstract

Abstract: Soil salinization is one of the main stress factors affecting agricultural production. Waxy corn has high nutritional value and plays an important role in urban agriculture. Therefore, it is of great significance to study the salt-tolerant characteristics of waxy corn for the cultivation of waxy corn in salinized soil and the rational utilization of salinized soil. The effects of exogenous gibberellin on physiological characteristics of waxy corn seedlings under different soil salinity were researched with waxy corn variety ‘runnuo 73’ as materials. The results showed that the content of soluble protein in waxy corn seedlings treated with gibberellin were significantly increased compared with the control group under 0.22% and 0.36% soil salt content. The content of soluble sugar and proline, the superoxide dismutase activity and catalase activity in waxy corn seedlings treated with gibberellin were significantly increased compared with the control group in the salt content range of 0.36% to 0.50%. The content of malondialdehyde in waxy corn seedlings treated with gibberellin was significantly reduced compared with the control group under 0.22%, 0.36% and 0.50% salt content. Therefore, under certain salt content, gibberellin treatment could alleviate the damage of salt stress to waxy corn seedlings by increasing osmotic substance content, enhancing antioxidase activity and decreasing malondialdehyde content.

Key words: waxy maize, salt stress, gibberellin, seedlings, physiological characteristics

CLC Number:

S565.4

Ding Jianwen, Zhang Xiaochen, Yang Xing, Du Jin, Cao Gaoyi, Xiang Chunyang. Effects of exogenous gibberellin on physiological characteristics in waxy maize seedlings under salt stress[J]. Journal of Tianjin Agricultural University, 2022, 29(1): 37-41.

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Effects of exogenous gibberellin on physiological characteristics in waxy maize seedlings under salt stress

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