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首页> 外文会议>International citrus congress >Effects of Pot Cultivation on Photosynthesis and Chlorophyll Fluoresce Characteristics in Leaves of Citrus
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Effects of Pot Cultivation on Photosynthesis and Chlorophyll Fluoresce Characteristics in Leaves of Citrus

机译：盆栽培养对柑橘叶片光合作用和叶绿素荧光特性的影响

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The effects of root restriction on the photosynthesis and chlorophyll fluorescence characteristics were studied in ' Tiancao' [ (Citrus sinensis X Citrus unshiu Marcov)×Citrus reticulate ] cultivated in pots with different sizes and in field. The results showed that the net photosynthesis rate (Pn) , stomatal conductance (G,) , intercellular CO2 concentration (C1)and transpiration rate (Tr) remained unchanged in large-pot-cultivated plants as compared to those in field at different photosynthetic photo flux density. However, Pn, G, and Tr in small-pot-cultivated plants decreased significantly, while C1 was unchanged. The capacity for CO2 utilization was reduced only at high concentration in large-pot cultivated plants, but it was significantly declined at all CO2 concentration in small-potcultivated plants in comparison with the control. Maximal efficiency of PS II photochemistry (Fv/Fm), effective PS II quantum yield (<ΦPSII), electron transport rate (ETR) and photochemical quenching (qP) as well as non-photochemical quenching (NPQ) hardly showed significant difference except that excitation energy capture efficiency of PS II reaction centers (FV'/Fm') decreased prominently in large pot-cultivated plants as compared with that in the field. However, Fv/Fm, ΦPSII, qP and ETR decreased and NPQ increased markedly in the plants cultivated in small pots. The results also showed that contents of Chl and soluble protein declined significantly in small-pot-cultivated plants, but remained stable in large-pot-cultivated plants. It indicated that small pot cultivation led to more rapid senescence in citrus leaves, which might be the reason for the declined photosynthetic capacity in small-pot-cultivated plant.
机译：根限制对光合作用和叶绿素荧光特性的影响在“天草” [（甜橙X温州蜜柑马尔科夫）×柑橘网状]在具有不同大小和在字段盆中栽培进行了研究。结果表明，相比于在不同的光合相片的那些字段中的净光合速率（Pn），气孔导度（G），胞间CO2浓度（C1）和蒸腾速率（Tr）仍留在大罐栽培植物不变通量密度。然而，PN，G，和Tr在小壶栽培植物显著下降，而C1保持不变。用于CO 2利用率的能力仅在大罐栽培植物高浓度降低，但它是在与对照相比在小potcultivated植物所有CO2浓度显著下降。 PS II光化学（FV / FM），有效PS II量子产率（<ΦPSII），电子传递速率（ETR）和光化学淬灭系数（qP）的最大效率以及不同之处在于非光化学淬灭（NPQ）几乎不显示显著差异如与在字段相比PS II反应中心的激发能捕获效率（FV“/ FM”）在大罐栽培植物显着降低。然而，FV / FM收音机，ΦPSII，qP和ETR降低和NPQ在小盆栽培的植物中显着增加。研究结果还表明，叶绿素和可溶性蛋白质含量的小盆栽栽培植物显著下跌，但仍维持在大锅里栽培植物稳定。这表明，小盆栽导致更快速衰老柑橘叶片，这可能是在下降的小盆栽栽培植物光合能力的原因。

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