The responses of photosynthetic capacity,chlorophyll fluorescence and chlorophyll content of nectarine (Prunus persica var. Nectarina Maxim) to greenhouse and field grown conditions |
| |
Authors: | Hong Wang Falin Wang Gang Wang Khalid Majourhat |
| |
Institution: | 1. The Pomology Institute of GanSu Academy of Agricultural Science, Lanzhou 730070, China;2. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000, China;3. Department of Plant Breeding CEBAS-CSIC, PO Box 164, E-30100 Espinardo-Murcia, Spain |
| |
Abstract: | 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. |
| |
Keywords: | Amax net photosynthetic rate at light saturation point CCP CO2 compensation point chl chlorophyll Ci intercellular CO2 concentration CSP CO2 saturation point Fv/Fm maximal photosystem (PS) II photochemical efficiency LCP light compensation point LSP light saturation point PPFD photosynthetic photon flux density PN net photosynthetic rate RuBPmax net photosynthetic rate at CO2 saturation point |
本文献已被 ScienceDirect 等数据库收录! |
|