Leaf gas exchange properties of three varieties of Labisia pumila Benth. under greenhouse conditions

Ibrahim M. H., . and Jaafar H. Z. E., . and Philip E., . Leaf gas exchange properties of three varieties of Labisia pumila Benth. under greenhouse conditions. pp. 16-24. ISSN 1985-0484

Leaf gas exchange properties of three varieties of Labisia pumila Benth. (varieties alata lanceolata and pumila) were measured using LICOR 6400 portable photosynthesis meter under greenhouse conditions in a single factor Complete Randomized Design replicated 10 times. Results indicated that there were no varietal preferences on stomata conductance water use efficiency and transpiration rate. However net photosynthesis was 33 and 26 significantly higher (p 0.01) in var lanceolata (3.47 mol/m/s) compared to varieties alata (2.33 mol/m/s) and pumila (2.58 mol/m/s) respectively. Although other leaf gas exchange parameters did not differ significantly among the varieties var lanceolata consistently recorded higher values for stomata conductance and water use efficiency against other varieties. The results may imply that var lanceolata is a more adaptable hence more suitable for the propagation under greenhouse conditions than the other two varieties. However further research needs to be conducted to confirm these findings as the effects observed might be attributed to the differences in stomata sensitivity of the plants studied. Variety alata conversely had consistently exhibited the lowest values for all its leaf gas exchange characteristics suggesting that the variety is more challenging to be raised under the greenhouse conditions for domestication purposes. Selection of variety for propagation should also however be based upon varietal potential 10 produce and accumulate secondary metabolites under greenhouse for the purpose of enhancing local herbal industry.

Full text available from: Official URL: http://www.jtpp.org.my/volume/3/vol3_article3.pdf

Abstract

Leaf gas exchange properties of three varieties of Labisia pumila Benth. (varieties alata lanceolata and pumila) were measured using LICOR 6400 portable photosynthesis meter under greenhouse conditions in a single factor Complete Randomized Design replicated 10 times. Results indicated that there were no varietal preferences on stomata conductance water use efficiency and transpiration rate. However net photosynthesis was 33 and 26 significantly higher (p 0.01) in var lanceolata (3.47 mol/m/s) compared to varieties alata (2.33 mol/m/s) and pumila (2.58 mol/m/s) respectively. Although other leaf gas exchange parameters did not differ significantly among the varieties var lanceolata consistently recorded higher values for stomata conductance and water use efficiency against other varieties. The results may imply that var lanceolata is a more adaptable hence more suitable for the propagation under greenhouse conditions than the other two varieties. However further research needs to be conducted to confirm these findings as the effects observed might be attributed to the differences in stomata sensitivity of the plants studied. Variety alata conversely had consistently exhibited the lowest values for all its leaf gas exchange characteristics suggesting that the variety is more challenging to be raised under the greenhouse conditions for domestication purposes. Selection of variety for propagation should also however be based upon varietal potential 10 produce and accumulate secondary metabolites under greenhouse for the purpose of enhancing local herbal industry.

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Item Type:	Article
AGROVOC Term:	Myrsinaceae
AGROVOC Term:	Medicinal plants
AGROVOC Term:	Varieties
AGROVOC Term:	Gas exchange
AGROVOC Term:	Greenhouses
AGROVOC Term:	Microclimate
AGROVOC Term:	Photosynthesis
AGROVOC Term:	Stomatal conductance
AGROVOC Term:	Transpiration
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9159

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