Legume Research

Web of Science
  • Year: 2023
  • Volume: 46
  • Issue: 12

Effect of exogenous abscisic acid (ABA), a potential growth regulator on physiological response to chilling stress of adzuki bean (Vigna angularis) at flowering stage

  • Author:
  • Xiang Hong-Tao1,2,*, Li Wan2,3, Liu Jia2, He Ning2, Wang Xue-Yang2, Li Bo2,3, Xie Hong-Chang1, Wang De-Ming1
  • Total Page Count: 6
  • Page Number: 1604 to 1609

1Suihua Branch, Heilongjiang Academy of Agricultural Machinery Sciences, Suihua, 152054, Heilongjiang, China

2Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, Heilongjiang, China

3Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, Heilongjiang, China

Abstract

Low temperatures during flowering severely affect crop growth and yield.

This experiment was conducted under potted conditions with LXD 4 and TJH as test materials and pre-sprayed with exogenous ABA at a concentration of 20 mg-PL-1 at flowering stage, respectively and then with an average of 15°C condition for 5 days.

The results showed that foliar spraying exogenous ABA effectively inhibited the increase of MDA content and relatively significantly improved the photosynthetic parameters such as Gs and T'r and alleviated the loss of yield factors caused by chilling stress. Compared with spraying water, spraying exogenous ABA can significantly increase the yield per pot of LXD 4 by 6.72˜17.77% and TJH by 6.41˜37.04% under low temperature conditions. In summary, foliar spraying exogenous ABA ameliorated the effects of chilling stress on the physiological characteristics of adzuki bean leaves and improved yield as a result of improved antioxidant defense mechanisms which impeded lipid peroxidation. Thus, we conclude that foliar spraying exogenous ABA could decelerate the damages caused by chilling stress to some extent.

Keywords

Adzuki bean, Anti-adversity defense system, Chilling, Exogenous ABA, Yield