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Effects of drought stress on growth and physiological characteristics of roselle (Hibiscus sabdariffa L.)


Citation

Narejo, Mehar-un-Nisa and Megat Wahab, Puteri Edaroyati and Hassan, Siti Aishah and Che Mohd Zain, Che Radziah (2016) Effects of drought stress on growth and physiological characteristics of roselle (Hibiscus sabdariffa L.). Journal of Tropical Plant Physiology, 8 (1). pp. 44-51. ISSN 1985-0484

Abstract

Drought is the major abiotic stress which causes major losses to agriculture production. This study was conducted to determine the effect of drought stress on the growth and physiological characteristics of Hibiscus sabdariffa. The drought stress treatments were 33, 67 and 100% of the field capacity. Each treatment was replicated five times in a randomized complete block design. According to the results, drought stress had significant effects on the growth and physiological traits of H. sabdariffa. As the drought stress increased, the plant height, leaf area, specific leaf area, fresh and dry weight of shoot and root, photosynthetic rate, stomatal conductance, intercellular CO2 concentration and the transpiration rate decreased. The root-shoot ratio was significantly increased in stressed plants. The changes in number of branches per plant and chlorophyll content were, however, not significant. These findings suggested that H. sabdariffa might be able to tolerate drought stress by increasing the root-shoot ratio and stability of chlorophyll content.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Publisher: Malaysian Society of Plant Physiology
Keywords: Leaf area; Root-shootratio; Leaf gas exchange; Chlorophyll content
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 28 Feb 2018 02:36
Last Modified: 05 Feb 2020 04:31
URI: http://psasir.upm.edu.my/id/eprint/54088
Statistic Details: View Download Statistic

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