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Effect of Drought and Abscisic Acid Application on the Osmotic Adjustment of Four Wheat Cultivars

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dc.contributor.author SUMERA IQBAL
dc.contributor.author ASGHARI BANO
dc.date.accessioned 2023-09-22T03:28:09Z
dc.date.available 2023-09-22T03:28:09Z
dc.date.issued 2010-02-20
dc.identifier.citation Iqbal, S., & Bano, A. (2010). Effect of drought and abscisic acid application on the osmotic adjustment of four wheat cultivars. Journal of the Chemical Society of Pakistan, 32(1), 13-19. en_US
dc.identifier.issn 0253-5106
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/19677
dc.description.abstract The accumulation of osmolytes in leaf tissues and the abscisic acid-induced stomatal closure are well-recognized mechanisms associated with drought tolerance in crop plants. We determine the response in terms of osmotic potential and the contents of leaf proline, glycine betaine and soluble sugar at booting and grainfilling stages of four wheat (Triticum aestivum L.) cultivars to drought and exogenously applied abscisic acid (ABA) in a pot study. Leaf sample were collected 3, 6 and 9 days after drought induction and at 48 and 72 h of re-watering (recovery). Marked decreases in osmotic potential associated with the accumulation of proline, glycine betaine and soluble sugars occurred under conditions of drought stress. Accession 011320 was most sensitive to drought and showed the largest decrease in osmotic potential and least accumulation of proline, sugar and glycine betaine The inhibitory effects of drought stress were ameliorated by exogenous application of ABA. This ameliorating effect was more pronounced at the booting than at grainfilling stage particularly in the sensitive accession 011320. Upon rewatering the recovery from drought stress was found to be greater in case of abscisic acid application. The leaf praline content is seen to be a suitable indicator for selecting drought-tolerant genotypes en_US
dc.description.sponsorship The chemical society of Pakistan is an approved society from the PSF. en_US
dc.language.iso en en_US
dc.publisher HEJ Research Institute of Chemistry, University of Karachi, Karachi. en_US
dc.title Effect of Drought and Abscisic Acid Application on the Osmotic Adjustment of Four Wheat Cultivars en_US
dc.type Article en_US


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