Drought tolerance potential of Vigna mungo L. lines as deciphered by modulated growth, antioxidant defense, and nutrient acquisition patternsShow others and affiliations
2016 (English)In: Revista Brasileira de Botânica, ISSN 0100-8404, E-ISSN 1806-9959, Vol. 39, no 3, p. 801-812Article 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, p. 801-812
Keywords [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: 000383389900001Scopus ID: 2-s2.0-84987657223OAI: oai:DiVA.org:umu-126741DiVA, id: diva2:1038752
2016-10-192016-10-132023-03-24Bibliographically approved