Journal of Food, Agriculture and Environment
Vol 12,
Issue 2,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Relationship between drought resistance and AhNCED1 expression in peanut varieties from four provinces in China
Author(s):
Yanping Chen,
Ling Li *, Pengwei Hu, Jinli He, Zhiwei Ru, Bo Hu, Liangchen SuRecieved Date: 2014-02-03, Accepted Date: 2014-04-12
Abstract:Peanut (Arachis hygogaea L.) is an important oil crop. Drought can limit its yield and seeking drought-resistant varieties is an important strategy to improve peanut yield. Previous research indicated that endogenous abscisic acid (ABA) content in peanuts is positively related to drought resistance. The 9-cis-epoxycarotenoid dioxygenase (AhNCED1) is the rate-limiting enzyme in the ABA biosynthesis of peanuts. AhNCED1 plays an important role in regulating drought resistance of peanuts. In this study, three physiological indexes (water, ABA and proline content) were determined in the leaves of fifteen peanut varieties from four provinces in China and used to analyse the subordinate function value of drought resistance. Meanwhile, AhNCED1 expression in leaves of fifteen varieties under water stress treatment was analysed. Results suggested that the drought resistance of peanut varieties was significantly correlated with their AhNCED1 expression level after water stress treatment for 12 h. These results suggest that AhNCED1 expression level reflects drought resistance of peanuts and is a molecular marker for screening drought-resistant varieties. In this study, Yueyou 7 (No. 1), Beihai 1 (No. 4), Guihua 21 (No. 8) and Zhonghua 12 (No. 9) were identified as high-tolerant varieties.
Keywords:AhNCED1 expression,
peanut variety, production area, drought resistance, subordinate function valueJournal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Agriculture
Pages: 509-514
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