
	Asian Journal of Plant Sciences
	Year: 2011 \| Volume: 10 \| Issue: 3 \| Page No.: 212-219 DOI: 10.3923/ajps.2011.212.219

Exogenous Abscisic Acid Enhances Sugar Accumulation in Rice (Oryza sativa L.) under Drought Stress

Wattana Pattanagul

Abstract: The objective of this study was to determine the effects of exogenous ABA on growth and carbohydrate metabolism in rice seedlings cv. Khao Dawk Mali 105 under drought stress. Rice seedlings were grown for 10 days and subjected to water restriction for 7 days. Drought stress caused significant reduction in shoot as well as root growth and biomass. Leaf relative water content and chlorophyll contents were reduced by drought stress. Application of exogenous ABA helps the plants by improving leaf relative water content. Drought stress also caused significant increases in sugar accumulation, accompanied by increases in sucrose phosphate synthase activities. Application of exogenous ABA enhanced sugar accumulation but decreased starch content in the leaf. The results indicated that sugar accumulation is associated with drought stress and exogenous abscisic acid can improve plant water status as well as enhances sugar accumulation under drought stress.

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How to cite this article:

Wattana Pattanagul , 2011. Exogenous Abscisic Acid Enhances Sugar Accumulation in Rice (Oryza sativa L.) under Drought Stress. Asian Journal of Plant Sciences, 10: 212-219.

DOI: 10.3923/ajps.2011.212.219

URL: https://scialert.net/abstract/?doi=ajps.2011.212.219

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