| 生物土壤与生态 |
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| Effects of Salt on the Growth and Photosynthetic Characteristics of Populus euphratica Seedlings |
| LI Ju-yan1,2 , ZHAO Cheng-yi1, YAN Ying-yu1, LI Jun1, SUN Dong-yuan1,2 |
| 1.Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract The effects of salt stress on the growth and photosynthetic characteristics of Populus euphratica seedling were studied by pot culture under control condition at Akesu Water Balance Station of Chinese Academy of Sciences. The results indicate that salt stress impacts the biomass accumulation of different organs, with the intensity following the order: leaf>root>stem. The biomass of P. euphratica seedlings decreased by about 30% of those under the control treatment (0 mmol NaCl treatment) when soil salinity was less than 18.32 g\5kg-1 (50 mmol NaCl treatment). Whereas, when the soil salinity rose to 27.95 g\5kg-1, the biomass of P. euphratica seedlings decreased by about 80% of those in control condition, thus resulting in death of the seedlings. Salt stress also has a significantly effect on the photosynthesis and water use efficiency (WUE) of P. euphratica seedlings, with the photosynthetic rate reducing with soil salinity. When soil salinity was lower than 18.32 g\5kg-1, the WUE and salt tolerance of P. euphratica seedlings could be mediated by reducing transpiration rate. Under the condition with soil salinity higher than 18.32 g·kg-1, the WUE decreased, and salt-stressed symptoms occurred. In addition, salt stress impacts the fluorescence performance of P. euphratica seedlings, with Fv/Fm(maximum photochemistry efficiency), Fv′/Fm′(PSⅡ effective photochemistry quantum efficiency), qP(photochemistry quenching coefficient) and ETR(electronic transfer rate) reducing significantly, but NPQ(non-photochemistry quenching coefficient) increasing with soil salinity.
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Received: 13 February 2009
Published: 20 January 2010
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[1]王东健,陈其凌,李铭,等.胡杨不同生长阶段的耐盐性[J].新疆林业,1998(4):9-10.
[2]张勇,薛林贵,高天鹏,等.荒漠植物种子萌发研究进展[J].中国沙漠,2005,25(1):106-112.
[3]Katembe W J,Ungar I A,Mitchell J P.Effect of salinity on germination and seedling growth of two Atriplex species (Chenopodiaceae)[J].Annals of Botany,1998,82:167-175.
[4]龙利群,李新荣.土壤微生物结皮对两种一年生植物幼苗存活和生长的影响[J].中国沙漠,2003,23(6):656-660.
[5]张景光,王新平,李新荣,等.荒漠植物生活史对策研究进展与展望[J].中国沙漠,2005,25(3):306-314.
[6]陈年来,马国军,张玉鑫,等.甜瓜种子萌发和幼苗生长对NaCl胁迫的响应[J].中国沙漠,2006,26(5):814-819.
[7]余叔文,汤章城.植物生理与分子生物学[M]//刘友良,汪良驹.植物对盐胁迫的反应和耐盐性(第2版).北京:科学出版社,1998:752-769.
[8]Brugnolie.Effects of salinity on stomata conductance,photosynthetic capacity,and carbon isotope discrimination of salt-tolerance (Gos-sypiumhirsutum L) and salt-sensitive (Phaseolus vulgaris L) C3 non-halophytes [J].Plant Physiology,1991,95:628-635.
[9]Ouerghi Z,Cornic G,Roudani M,et al.Effect of NaCl on photosynthesis of two wheat species (Triticum durum and T.aestivum) differing in their sensitivity to salt stress [J].Journal of Plant Physiology,2000,156: 335-340.
[10]Bethkep C,Drewm C.Stomata and nonstomatal components to inhibition of photosynthesis in leaves of Capsicum annuum during progressive exposure to NaCl salinity [J].Plant Physiology,1992,99: 219-226.
[11]江行玉,窦君霞,王正秋.NaCl对玉米和棉花光合作用与渗透调节能力影响的比较[J].植物生理学通讯,2001,37(4):303-305.
[12]Farquhar G D,Von C S.Modeling of photosynthetic response to environmental conditions[M]∥Lange O L,Nobel P S,Osmond C B,et al.Ecolopedia of Plantphysiology New Series.Berlin:Springer-Verlag,1982:549-587.
[13]刘宇锋,萧浪涛,童建华,等.非直线双曲线模型在光合光响应曲线数据分析中的应用[J].中国农学通报,2005,21(8):76-79.
[14]Hulsebosch R J,Hoff A J,shuvalov.Influence of KF,DCMU and removal of Ca on the light-spin EPR signal of the cytochrome b-599 Fe (Ⅲ) ligated by OH in chloroplasts[J].Biophys Acta,1996,1277:103-106.
[15]Bjookman O,Demming.Phtoto yield of O2 evolution and chlorophyll fluorescence characteristics at 77 k vascular plant of diverse origins[J].Planta,1987,70:489-504.
[16]Munns R.Comparative physiology of salt and water stress [J].Plant Cell and Environment,2002,25:239-250.
[17]陈兰周,刘永定,李敦海.盐胁迫对爪哇伪枝藻(Scytonema javanicum)生理生化特性的影响[J].中国沙漠,2003,23(3):285-288.
[18]Farquhar G D,Sharkey T D.Stomatal conductance and photosynthesis[J].Ann Rev Plant Physiol,1982,33:317-345.
[19]张淑红,张恩平,庞金安,等.NaCl胁迫对黄瓜幼苗光合特性及水分利用率的影响[J].中国蔬菜,2005(1):11-13.
[20]钱琼秋,魏国强,朱祝军,等.不同品种黄瓜幼苗光合机构对盐胁迫的响应[J].科技通报,2004,20(5):459-463.
[21]韩志平,郭世劳,焦彦生,等.NaCl胁迫对西瓜幼苗生长和光合气体交换参数的影响[J].西北植物学报,2008,28(4):0745-0751.
[22]惠红霞,许兴,李守明.盐胁迫抑制枸杞光合作用的可能机理[J].生态学杂志,2004,23(1):5-9.
[23]刘悦秋,孙向阳,王勇,等.遮荫对异株荨麻光合特性和荧光参数的影响[J].生态学报,2007,27(8):3457-3464.
[24]伍维模,李志军,罗青红,等.土壤水分胁迫对胡杨、灰叶胡杨光合作用——光响应特性的影响[J].林业科学,2007,43(5):30-35.
[25]马焕成,王沙生,蒋湘宁.盐胁迫下胡杨的光合和生长响应[J].西南林学院学报,1998,18(1):33-41.
[26]韩张雄,李利,徐新文,等.NaCl胁迫对3种荒漠植物幼苗叶绿素荧光参数的影响[J].西北植物学报,2008,28(9):1843-1849.
[27]汪月霞,孙国荣,王建波,等.NaCl胁迫下星星草幼苗MDA含量与膜透性及叶绿素荧光参数之间的关系[J].生态学报,2006,26(1):122-129.
[28]薛延丰,刘兆普.不同浓度NaCl和Na2CO3处理对菊芋幼苗光合及叶绿素荧光的影响[J].植物生态学报,2008,32(1):161-167.
[29]宋维民,周海燕,贾荣亮.土壤逐渐干旱对4种荒漠植物光合作用和海藻糖含量的影响[J].中国沙漠,2008,28(3):449-454.
[30]秦仁昌.关于胡杨和灰杨的一些问题[M]//新疆维吾尔自治区自然条件论文集.北京:科学出版社,1959:124-150.
[31]魏庆莒.胡杨[M].北京:中国林业出版社,1993:1,10-60. |
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2010, Vol. 30 
