Effects of salinity on growth water relations and photosynthetic rate of tomatoes Lycopersicon esculentum grown in nutrient film technique


Citation

Mohd Razi Ismail, . and Burrage S.W., . Effects of salinity on growth water relations and photosynthetic rate of tomatoes Lycopersicon esculentum grown in nutrient film technique. pp. 73-79. ISSN 0126-6128

Abstract

Tomato (Lycopersicon esculentum Mill. var Counter) plants were grown under different salinity conditions using the Nutrient Film Technique (NFT). In the experiment plants were exposed to salinities of 2.5 5.5 and 8.5 mS/cm. In the second experiment plants were exposed to continues salinity of 2.5 and 8.5 mS/cm and altered salinity i.e low to high or vice versa. Leaf and stem dry weight were markedly reduced when plants were exposed to continues salinity of 8.5 mS/cm. Exposure to high salinity at the later stages of growth also resulted in the reduction of leaf dry weight to a level similar to that of plants exposed to continuous high salinity. This could be attributed to the restriction in the movement of water within the plants as indicated by the reduction in plant water uptake and leaf water potential. Photosynthetic rate was not affected although stomatal conductance and leaf water potential were reduced when plants were exposed to high salinity


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Abstract

Tomato (Lycopersicon esculentum Mill. var Counter) plants were grown under different salinity conditions using the Nutrient Film Technique (NFT). In the experiment plants were exposed to salinities of 2.5 5.5 and 8.5 mS/cm. In the second experiment plants were exposed to continues salinity of 2.5 and 8.5 mS/cm and altered salinity i.e low to high or vice versa. Leaf and stem dry weight were markedly reduced when plants were exposed to continues salinity of 8.5 mS/cm. Exposure to high salinity at the later stages of growth also resulted in the reduction of leaf dry weight to a level similar to that of plants exposed to continuous high salinity. This could be attributed to the restriction in the movement of water within the plants as indicated by the reduction in plant water uptake and leaf water potential. Photosynthetic rate was not affected although stomatal conductance and leaf water potential were reduced when plants were exposed to high salinity

Additional Metadata

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Item Type: Article
Additional Information: Summaries (En Ms)
AGROVOC Term: LYCOPERSICON ESCULENTUM
AGROVOC Term: FISIOLOGIA VEGETAL
AGROVOC Term: TECNICAS DE CINTA NUTRITIVA
AGROVOC Term: FOTOSINTESIS
AGROVOC Term: SALINIDAD
AGROVOC Term: RELACIONES PLANTA AGUA
AGROVOC Term: CRECIMIENTO
AGROVOC Term: TOMATE
Depositing User: Ms. Norfaezah Khomsan
Last Modified: 24 Apr 2025 05:57
URI: http://webagris.upm.edu.my/id/eprint/20994

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