Light-response curve of photosynthesis and model fitting in leavesof Mangifera indica under different soil water conditions

Y.L.  LI; X.G.  LIU; K.  HAO; Q.L.  YANG; X.Q.  YANG; W.H.  ZHANG; Y.  CONG

doi:10.32615/ps.2019.095

Photosynthetica (Jul 2019)

Light-response curve of photosynthesis and model fitting in leavesof Mangifera indica under different soil water conditions

Y.L. LI,
X.G. LIU,
K. HAO,
Q.L. YANG,
X.Q. YANG,
W.H. ZHANG,
Y. CONG

Affiliations

Y.L. LI: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,
X.G. LIU: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,
K. HAO: Shanxi, China
Q.L. YANG: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,
X.Q. YANG: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,
W.H. ZHANG: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,
Y. CONG: Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, 650500 Kunming, Yunnan, China Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, 710048 Xi'an,

DOI: https://doi.org/10.32615/ps.2019.095
Journal volume & issue: Vol. 57, no. 3
pp. 796 – 803

Abstract

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A pot experiment was performed to study the light-response curve of photosynthesis (PN-PAR curve) of Mangifera indica and the applicability of light-response models under different soil water conditions. The experimental data were fitted and analyzed using the rectangular hyperbola model, the nonrectangular hyperbola model, the exponential model, the modified rectangular hyperbola model, and the kinetic model. The results showed that the optimal range of relative soil water content (RSWC) for the normal photosynthesis of M. indica was 45.1-77.3%. The modified rectangular hyperbola model could well fit the PN-PAR curves and photosynthetic parameters under wide range of soil water conditions (RSWC 23.3-77.3%). The rectangular hyperbola model, the nonrectangular hyperbola model, the exponential model, and the kinetic model could only be used to fit the PN-PAR curves of M. indica under mild and moderate drought stress (RSWC 45.1-77.3%).

field capacity; light-compensation point; light-response curve; model comparison; net photosynthetic rate.

Published in Photosynthetica

ISSN: 0300-3604 (Print); 1573-9058 (Online)
Publisher: Academy of Sciences of the Czech Republic, Institute of Experimental Botany
Country of publisher: Czechia
LCC subjects: Science: Botany
Website: https://ps.ueb.cas.cz/

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