Genotypic variation in non-steady state photosynthetic carbon dioxide assimilation of Hevea brasiliensis

Nugawela A., . and Long S.P., . and Aluthhewage, . Genotypic variation in non-steady state photosynthetic carbon dioxide assimilation of Hevea brasiliensis. pp. 266-275. ISSN 0127-7065

Under natural conditions leaves of Hevea plants often experience either continuous of fluctuating light levels. Thus in this study three Hevea brasiliensis genotypes were compared for their response to such light environments simulated in the laboratory. It is evident that genotypes differ in their ability to maintain steady CO2 assimilation rates throughout the day under constant saturating light. Similar differences were apparent in the ability to maintain the induction states under low light levels. Further carbon losses could result due to the undershoot in CO2 assimilation rate when light levels are suddenly reduced. Genotypes differences in such non-steady state behavior of CO2 assimilation may contribute to differences in productivity.

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Abstract

Under natural conditions leaves of Hevea plants often experience either continuous of fluctuating light levels. Thus in this study three Hevea brasiliensis genotypes were compared for their response to such light environments simulated in the laboratory. It is evident that genotypes differ in their ability to maintain steady CO2 assimilation rates throughout the day under constant saturating light. Similar differences were apparent in the ability to maintain the induction states under low light levels. Further carbon losses could result due to the undershoot in CO2 assimilation rate when light levels are suddenly reduced. Genotypes differences in such non-steady state behavior of CO2 assimilation may contribute to differences in productivity.

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Item Type:	Article
Additional Information:	Summary (En)
AGROVOC Term:	HEVEA BRASILIENSIS
AGROVOC Term:	PLANTAS LACTIFERAS
AGROVOC Term:	FOTOSINTESIS
AGROVOC Term:	NUTRICION DE LAS PLANTAS
AGROVOC Term:	LUZ
AGROVOC Term:	DIOXIDO DE CARBONO
AGROVOC Term:	GENOTIPOS
AGROVOC Term:	PRODUCTIVIDAD
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:51
URI:	http://webagris.upm.edu.my/id/eprint/17266

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