Journal
SCIENTIA HORTICULTURAE
Volume 112, Issue 1, Pages 66-72Publisher
ELSEVIER
DOI: 10.1016/j.scienta.2006.12.007
Keywords
Prunus persica; photosynthesis; photoinhibition; acclimation
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Three nectarine (Prunus persica var. Nectarina Maxim.) cultivars grown under solar-heated greenhouse and open-field in northwest China, were tested to evaluate their photosynthetic and chlorophyll fluorescence response to both growth conditions, and whether nectarine plants acclimate to the solar-heated greenhouse growth condition. Comparisons of light-saturated photosynthetic capacity (Amax) and CO2-saturated photosynthetic capacity (RuBPmax) indicated that each cultivar (Z, Zao-Hongzhu; H, Hua-Guang; Y, Yan-Guang) maintained similar rates of light-saturated and CO2-saturated carbon assimilation when grown in both conditions. The curve of diurnal variation of net photosynthetic (P-N) rate showed double peaks in open-field but single when grown in greenhouse. Compared with open-field-grown plants, a significant increase of daily average P-N was found in Z but decreased in Y in greenhouse. The diurnal variation of F-v/F-m indicate that plants grown in greenhouse experience less photoinhibition than in open-field condition. A reduction in chlorophyll (chl) a/b ratio in leaves of greenhouse grown plants with significant increase in chlorophyll (chl) b content were obtained. The results suggest that some nectarine cultivars have the ability to acclimate to the solar-heated greenhouse growth condition. (c) 2007 Elsevier B.V. All rights reserved.
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