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干旱-复水处理对寒富苹果光合特性的影响

DOI: 10.7668/hbnxb.2014.04.032, PP. 181-185

Keywords: 苹果,寒富,干旱-复水处理,光合特性

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Abstract:

以自然光照和遮荫环境下生长的寒富苹果为材料,通过气体交换和叶绿素荧光等方法测定了寒富苹果在干旱-复水处理过程中的光合特性。结果表明:干旱胁迫及复水过程中,净光合速率(Pn)、气孔导度(Gs)、胞间二氧化碳浓度(Ci)、PSⅡ最大光化学效率(Fv/Fm)、光合性能指数(PI)等指标表现出先逐渐降低,极度干旱时达到最低值,复水后缓慢回升的趋势;处理结束后,其中全光照下建造的叶片Pn比处理前低41.4%,而遮荫低38.1%;随着干旱胁迫及胁迫解除,单位面积有活性的反应中心的密度(RC/CSo)、单位面积叶片吸收的能量(ABS/CSo)、热耗散的能量(DIo/CSo)均逐渐上升,达到最大值后缓慢下降,其中干旱胁迫7d,不同光照环境下建造的叶片ABS/CSo和DIo/CSo达到差异极显著,这可能与前期叶片建造质量有较大关系。

References

[1]  Ortiz-Lopez A,Ort D R,Boyer J S.Photophosphorylation in attached leaves of Helianthus annuus at low water potential[J].Plant Physiology,1991,96(4):1018-1025.
[2]  Flexas J,Medrano H.Drought-inhibition of photosynthesis in C3 plant:stomatal and non-stomatal limitations revisited[J].Annals of Botany,2002,89(2):183-189.
[3]  Brodribb J J,Holbrook N M.Stomatal closure during leaf dehydration,correlation with other leaf physiological traits[J].Plant Physiology,2003,132:2166-2173.
[4]  张晓申,翟晓巧,邓敏捷,等.二倍体和四倍体泡桐对干旱胁迫生理响应差异研究[J].河南农业科学,2013,42(11):118-123.
[5]  时丽冉,王玉平,刘国荣,等.干旱胁迫对地被菊光合生理特性及水分利用率的影响[J].河南农业科学,2011,40(3):119-121.
[6]  Chaves M M,Oliveira M M.Mechanisms underlying plant resilience to water deficits:prospects for water-saving agriculture[J].Journal of Experimental Botany,2004,55(47):2365-2384.
[7]  Taiz L,Zeiger E.Stress physiology[M]//Plant physiology.2nd edn.Sunderland,MA:Sinauer Associates Inc,1998:725-757.
[8]  邹琦,孟庆伟,高辉远,等.作物在非生物逆境下的光合作用[J].作物杂志,1994(5):1-4.
[9]  金爱武,郑炳松,陶金星,等.雷竹光合速率日变化及其影响因子[J].浙江林学院学报,2000,17(3):39-43.
[10]  郑炳松,郑勇平,余有祥,等.仙客来叶片光合特性及其与环境因子的关系[J].浙江林学院学报,2001,18(4):366-370.
[11]  岳春雷,高智慧,陈顺伟,等.3种树种的光合特性及其与环境因子的关系[J].浙江林学院学报,2002,19(3):23-26.
[12]  冯建灿,胡秀丽,毛训甲.叶绿素荧光动力学在研究植物逆境生理中的应用[J].经济林研究,2002,20(4):14-18,30.
[13]  Epron D,Dreyer E.Effect of a severe dehydration on leaf phyotosynthesis in quercus petrea(Mtt.) liebl.:photosystemⅡand electrolytr leakage[J].Tree Physiology,1992,10:273-284.
[14]  Pankovic D,Sakac Z,Kevresan S, et al. Acclimation to long-term water deficit in the leaves of two sunflower hybrids:photosynthesis,electron transport and carbon metabolism[J].Journal of Experimental Botany,1999,50:127-138.
[15]  Cornic G,Fresneau C.Photosynthetic carbon reduction and carbon oxidation cycles are the main electron sinks fro photosystemⅡactivity during a mild drought[J].Annals of Botany,2002,89:887-894.
[16]  Georgieva K,Maslenkova L,Peeva V,et al.Comparative study on the changes in photosynthetic activity of the homoiochlorophyllous desiccation-tolerant Haberlea rhodopensis and desiccation-sensitive spinach leaves during desiccation and rehydration[J].Photosynthesis Research,2005,85(2):191-203.
[17]  Gravano E,Bussotti F,Strasser R J, et al. Ozone symptoms in leaves of wood plants in open-top chambers:ultrastructural and physiological characterstics[J].Physiologia Plantarum,2004,121:620-633.
[18]  Van Heerden P D R,Strasser R J,Kruger G H J.Reduction of dark chilling stress in N2-fixing soybean by nitrate as indicated by chlorophyll a fluorescence kinetics[J].Physiologia Plantarum,2004,121:239-249.

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