光合作用
光抑制
温室
叶绿素荧光
园艺
李子
栽培
叶绿素
光合能力
蔷薇科
植物
生物
光系统II
作者
Wang Hong,Falin Wang,Gang Wang,Khalid Majourhat
标识
DOI:10.1016/j.scienta.2006.12.007
摘要
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 (PN) 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 PN was found in Z but decreased in Y in greenhouse. The diurnal variation of Fv/Fm 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.
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