Influence of water deficit on the physiological and biochemical parameters of in vitro plants from Hevea brasiliensis


Citation

Fabre D., . and Oliver G., . and Lardet L., . and Sanier C., . and Clement-Vidal A., . and Montoro P., . Influence of water deficit on the physiological and biochemical parameters of in vitro plants from Hevea brasiliensis. pp. 61-74. ISSN 1511-1768

Abstract

The influence of a water deficit was investigated on in vitro plantlets from the rubber tree (Hevea brasiliensis) clone PB 260. The Fraction of Transpirable Soil Water (FTSW) was used to identify three levels of water deficit. Transpiration and stomatal conductance decreased for a FTSW of 0.4 while fluorescence appeared more stable. Proline and ascorbate contents increased from the same level of water deficit. Antioxidant enzyme activities were more stable than glutathione reductase activity which dramatically increased in line with the water deficit to peak at 0.12 UI/mg for a FTSW of 0.2. When plants were rehydrated enzyme activities decreased. The accumulation of proline for the lowest FTSW suggested water stress. Antioxidant systems did not play a predominant role for this genotype.


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Abstract

The influence of a water deficit was investigated on in vitro plantlets from the rubber tree (Hevea brasiliensis) clone PB 260. The Fraction of Transpirable Soil Water (FTSW) was used to identify three levels of water deficit. Transpiration and stomatal conductance decreased for a FTSW of 0.4 while fluorescence appeared more stable. Proline and ascorbate contents increased from the same level of water deficit. Antioxidant enzyme activities were more stable than glutathione reductase activity which dramatically increased in line with the water deficit to peak at 0.12 UI/mg for a FTSW of 0.2. When plants were rehydrated enzyme activities decreased. The accumulation of proline for the lowest FTSW suggested water stress. Antioxidant systems did not play a predominant role for this genotype.

Additional Metadata

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Item Type: Article
AGROVOC Term: Hevea brasiliensis
AGROVOC Term: Rubber crops
AGROVOC Term: Clones
AGROVOC Term: In vitro
AGROVOC Term: Water loss
AGROVOC Term: Biochemical indicators (organisms)
AGROVOC Term: Glutathione reductase
AGROVOC Term: Oxidative stress
AGROVOC Term: Plantlets (seedlings)
AGROVOC Term: Transpiration
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:28
URI: http://webagris.upm.edu.my/id/eprint/22971

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