Spraying Brassinolide improves Sigma Broad tolerance in foxtail millet (Setaria italica L.) through modulation of antioxidant activity and photosynthetic capacity

Yuan, X.Y. and Zhang, L.G. and Huang, L. and Yang, H.J and etl, . (2017) Spraying Brassinolide improves Sigma Broad tolerance in foxtail millet (Setaria italica L.) through modulation of antioxidant activity and photosynthetic capacity. Scientific Reports, 7 (1). pp. 1-9.

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Abstract

To explore the role of Brassinolide (BR) in improving the tolerance of Sigma Broad in foxtail millet (Setaria italica L.), effects of 0.1 mg/L of BR foliar application 24 h before 3.37 g/ha of Sigma Broad treatment at five-leaf stage of foxtail millet on growth parameters, antioxidant enzymes, malondialdehyde (MDA), chlorophyll, net photosynthetic rate (PN), chlorophyll fluorescence and P700 parameters were studied 7 and 15 d after herbicide treatment, respectively. Results showed that Sigma Broad significantly decreased plant height, activities of superoxide dismutase (SOD), chlorophyll content, PN, PS II effective quantum yield (Y (II)), PS II electron transport rate (ETR (II)), photochemical quantum yield of PSI(Y (I)) and PS I electron transport rate ETR (I), but significantly increased MDA. Compared to herbicide treatment, BR dramatically increased plant height, activities of SOD, Y (II), ETR (II), Y (I) and ETR (I). This study showed BR pretreatment could improve the tolerance of Sigma Broad in foxtail millet through improving the activity of antioxidant enzymes, keeping electron transport smooth, and enhancing actual photochemical efficiency of PS II and PSI.

Item Type: Article
Uncontrolled Keywords: Spraying Brassinolide, foxtail millet (Setaria italica L.),photosynthetic,modulation,Sigma Broad tolerance
Author Affiliation: Key Laboratory of Crop Chemical Regulation and Chemical Weed Control, Agronomy College, Shanxi Agricultural University, Taigu, 030801, P. R. China
Subjects: Plant Protection
Divisions: Millet
Depositing User: Mr T L Gautham
Date Deposited: 03 Jan 2019 05:38
Last Modified: 03 Jan 2019 05:38
URI: http://eprints.icrisat.ac.in/id/eprint/15747

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