文献类型： 外文期刊

作者： Li, X. ¹ ; Qin, Z. ¹ ; Tu, J. ¹ ; Yang, F. ¹ ; Zhu, H. ¹ ; Wu, T. ¹ ;

作者机构： 1.Hubei Acad Agr Sci, Inst Fruit & Tea, Wuhan 430209, Peoples R China

关键词： photosynthesis;pollination constant non-astringent persimmon;cultivar;diurnal variation curves

期刊名称：V INTERNATIONAL SYMPOSIUM ON PERSIMMON

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收录情况： SCI

摘要： The photosynthesis and the diurnal variation curves of 2 different pollination constant non-astringent persimmon cultivars were measured by portable photosynthesis system TPS-2. The results showed that the diurnal variation curves of Pn of Maekawa-jirou and Eshi 1 were asymmetric double-apex curves. The photosynthesis siesta was caused mostly by non-stomatal limitation. The diurnal variation curves of transpiration rate (Tr) presented single-apex curves. The diurnal variation curves of the intercellular CO_2 concentration (Ci) presented double-valley ones. The diurnal variation curves of the stomatal conductance (Gs) presented double-apex curves. The diurnal variation curves of the water use efficiency (WUE) presented single-valley curves. The diurnal variation curves of the stoma limit ratio (SLR) presented double-apex curves. The_ average Pn of 'Maekawa-jirou' and 'Eshi V were 11.68 and 9.87 umol CO_2m~(-2) s~(-1). The light saturation point (LSP) of 'Maekawa-jirou' and 'Eshi 1' were 938.00 and 1219.00 umol m~(-2) s~(-1). The light compensation point (LCP) of 'Maekawa-jirou' and 'Eshi 1' were 32.70 and 42.30 umol m~(-2) s~(-1).