|Table of Contents|

Effects of Exogenous Melatonin on Antioxidant Properties and Yield of Soybean Seedling Under Water Stress
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《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2019年03期
Page:
407-412
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Melatonin on Antioxidant Properties and Yield of Soybean Seedling Under Water Stress
Author(s):
HE Song-yu;  QIN Bin;  ZHANG Ming-cong;  JIN Xi-jun;  WANG Meng-xue;  REN Chun-yuan;  ZHANG Yu-xian
(College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China)
Keywords:
Soybean;  Seedling stage;  Melatonin; Water stress; Antioxidant enzymes; Yield
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2019.03.0407
Abstract:
To explore the effects of exogenous melatonin on the antioxidant properties and yield of soybean on its seedling drought, we used soybean［Glycine max (L.) Merrill］ cultivar Suinong 26 with drought sensitive, this study investigated the effects of antioxidant enzymes activity (SOD, POD, CAT), malondialdehyde (MDA) content and yield of soybean leaves and roots under water stress by using melatonin on the leaf and root. Our results indicated that compared with water stress(CK), the antioxidant enzyme activity of soybean leaves was significantly increased by using melatonin. When applyed melatonin on the leaf and root at 4 d after treatment, the activity of SOD was increased by 6.3% and 19.5% at V5 stage (P<0.05), POD increased by 7.5% and 12.7% (P<0.05), CAT increased by 5.6% and 9.9% at V1 stage (P<0.05), and the contents of MDA decreased by 9.4% and 10.3% at V3 stage (P<0.05) as compared to the CK. When compared to the CK at the 7 d after treatment, the activity of SOD, POD, CAT with applying melatonin of leaf at V1 stage increased by 6.3%, 9.5% and 4.9%, respectively. The activity of SOD, POD, CAT with applying melatonin of root increased by 6.9%, 20.9% and 11.1%, respectively. The content of MDA with applying melatonin of leaf and root at V1 stage decreased by 6.9% and 10.3% (P<0.05) at V1 stage. Compared to the CK, yield of applying melatonin of leaf at V1, V3 and V5 stages were increased by 31.6%， 29.8% and 12.6%, respectively, and yield of applying melatonin on root at V1, V3 and V5 stages were increased by 43.3%, 31.8% and 24.9%, respectively. The result showed that exogenous melatonin could improve the drought resistance of soybean, increased the yield and maintained the water balance of the cells by means of reducing the content of malondialdehyde, and finally increased the activity of antioxidant enzymes. Furthermore, the root application of melatonin was better than leaf application.

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Last Update: 2019-05-30