Effect of Drought and Rehydrated Treatment on Leaf Photosynthetic Characters of Hanfu Apple

doi:10.7668/hbnxb.2014.04.032

Abstract

Abstract: The photosynthetic characters of Hanfu apple leaves under different light conditions were studied by analyzing the gas exchange and chlorophyll fluorescence parameters.The result showed that the net photosynthetic rate(Pn),stomatal conductance(Gs),intercellular corbon dioxide concentration(Ci),maximal photochemical efficiency(Fv/Fm) and photosynthetic performance index(PI) all decreased gradually in dought condition,and reached the lowest in extreme drought,but recovered slowly after rehydration.At the end of the treatment,Pn of leaves under the full light and shading conditions was respectively 41.4% and 38.1% lower than that before the treatment.Along with the drought stress and drought relief,the density of SPⅡ reaction per excited cross section(RC/CSo),the energy absorbed per unit area(ABS/CSo) and the heat dissipation of energy(DIo/CSo) increased gradually,and started to decline after they reached the highest.The differences of leaf ABS/CSo and DIo/CSo among different lighting conditions reached a significant level after 7-days of drought stress,which was probably related to the quality of leaves.

Key words: Apple, Hanfu, Drought and rehydration treatment, Photosynthetic character

CLC Number:

S661.01

MA Hui-li, LÜ De-guo. Effect of Drought and Rehydrated Treatment on Leaf Photosynthetic Characters of Hanfu Apple[J]. journal1, 2014, 29(4): 181-185. doi: 10.7668/hbnxb.2014.04.032.

/ / Recommend / Download Citations

URL: http://www.hbnxb.net/EN/10.7668/hbnxb.2014.04.032

http://www.hbnxb.net/EN/Y2014/V29/I4/181

References

[1] 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.
[2] 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.
[3] 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.
[4] Taiz L,Zeiger E.Stress physiology[M]//Plant physiology.2nd edn.Sunderland,MA:Sinauer Associates Inc,1998:725-757.
[5] 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.
[6] 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.
[7] Brodribb J J,Holbrook N M.Stomatal closure during leaf dehydration,correlation with other leaf physiological traits[J].Plant Physiology,2003,132:2166-2173.
[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.

Please choose a citation manager

Content to export