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Drought tolerance potential of Vigna mungo L. lines as deciphered by modulated growth, antioxidant defense, and nutrient acquisition patterns
Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC). Department of Botany, Faculty of Science and Technology, Government College University, Faisalabad, Pakistan.
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2016 (English)In: Revista Brasileira de Botânica, ISSN 0100-8404, E-ISSN 1806-9959, Vol. 39, no 3, 801-812 p.Article in journal (Refereed) Published
Abstract [en]

Water shortage is one of the major environmental constraints that hamper the crop productivity worldwide. The present study was aimed to examine the drought tolerance potential of seven cultivars/lines of Vigna mungo L. depending upon their germination behavior, seedling growth, antioxidative defense mechanism, and nutrient acquisition. An experiment was conducted in the growth chamber using petri-plates and laid out in a completely randomized design (CRD). Hoagland's nutrient solution supplemented with 12 % PEG-8000 (drought treatment) or without PEG-800 (control) was used. Drought stress significantly altered the germination attributes as well as biomass production of all the studied cultivars/lines. Least adversative effects of drought stress were recorded in lines M-01001-1 and M-6036-21, respectively. The studied cultivars/lines exhibited differential response for various biochemical attributes under drought stress. The maximum increase in MDA and SOD activities and protein content was recorded in line M-603621, while the maximum AsA was recorded in line M-01001-1. Drought stress resulted in a significant reduction of plant N, P, K, Ca, and Mg contents, while the plant iron (Fe) contents remained unaffected. Results revealed that cultivars/lines M-01001-1 and M-6036-21 exhibited enhanced performance in terms of nutrient acquisition when stressed by drought. Based upon seed germination behavior, plant biomass production, biochemical attributes and mineral elements, the cultivars/lines M-01001-1 and M-6036-21 were identified as drought tolerant, while M-97 and Arroj-II were identified as drought sensitive.

Place, publisher, year, edition, pages
Springer, 2016. Vol. 39, no 3, 801-812 p.
Keyword [en]
Antioxidants, Drought tolerance, Germination, Growth attributes, Minerals, Vigna mungo L
National Category
Botany
Identifiers
URN: urn:nbn:se:umu:diva-126741DOI: 10.1007/s40415-016-0282-yISI: 000383389900001OAI: oai:DiVA.org:umu-126741DiVA: diva2:1038752
Available from: 2016-10-19 Created: 2016-10-13 Last updated: 2016-10-19Bibliographically approved

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CiteExportLink to record
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