通过对滨梅(Prunus maritima)幼苗进行NaCl胁迫试验，研究滨梅生长及生理状况的变化规律。结果表明：(1)滨梅生物量随NaCl处理浓度升高呈先升后降的趋势，浓度过高则抑制植物生长。(2)随处理浓度的增加，滨梅叶的丙二醛含量和相对电导率均有不同程度的升高；脯氨酸和可溶性蛋白含量也呈上升趋势；而过氧化物酶、超氧化物歧化酶活性和根活力均在浇灌水中NaCl质量浓度为6 g/L时达到最大，9 g/L时又显著减小。(3)净光合速率、水分利用效率、表观光合电子传递速率和实际光化学效率随浓度递增均呈先升后降的趋势，质量浓度为6 g/L时最大，而胞间CO2浓度则与上述光合指标的变化趋势相反。综上所述，滨梅耐盐性较强，在6 g/L NaCl处理下长势依然较好。
Abstract
Pot experiments were conducted to research vegetative and physiological changes of Prunus maritima seedlings under NaCl stress. The results showed that its biomass was firstly increased, and then decreased with an increase in NaCl concentration, and its growth was restrained under high level of salinity. Contents of MDA, relative electric conductivity in its leaves were increased to different extents and so were contents of both proline and soluble protein; and the activity of superoxide dismutase, of peroxidase, of root reached a maximum under 6 g/L NaCl in the irrigation water, then reduced significantly at 9 g/L. Changes of net photosynthetic rate, of water use efficiency, of apparent photosynthetic electron transport rate, and of real photochemical efficiency were similar to those of the two enzymes, and also achieved maximun under 6 g/L NaCl, while alterations of intercellular CO2 concentration were contrary to those of the above photosynthetic indexes. In summary, Prunus maritima has high salt resistance, and grows well under condition that NaCl concentration is about 6 g/L.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1]张建锋,张旭东,周金星,等. 世界盐碱地资源及其改良利用的基本措施[J]. 水土保持研究,2005,12(6):28-30.
[2]Kim Y, Arihara J, Nakayama T, et al. Antioxidative responses and their relation to salt tolerance in Echinochloa oryzicola Vasing and Setaria virdis (L.) Beauv.[J]. Plant Growth Regulation, 2004, 44(1): 87-92.
[3]方逵,龚津平,闫道良,等. 耐盐果树滨梅繁殖体系的建立[J]. 南京大学学报:自然科学版,2006,42(5):490-498.
[4]Rieger M, Duemmel M J. Comparison of drought resistance among Prunus species from divergent habitats[J]. Tree Physiology, 1992, 11(4): 369- 380.
[5]Gemma J N, Koske R E. Arbuscular mycorrhizae in sand dune plants of the north atlantic coast of U.S.: Field and greenhouse inoculation and presence of mycorrhizae in planting stock[J]. Journal of Environmental Management, 1997, 50(3): 251-264.
[6]Rieger M. Salt stress resistance of peach and four North American Prunus species[J]. ISHS Acta Horticulturae, 2001, 557: 181-192.
[7]中国科学院上海植物生理所,上海市植物生理学会. 现代植物生理学实验指南[M]. 北京:科学出版社,2004.
[8]Hasegawa P M, Bressan R A, Zhu J K, et al. Plant cellular and molecular responses to high salinity[J]. Annual Review of Plant Physiology and Plant Molecular Biology, 2000, 51: 463-499.
[9]夏阳,林杉,张福锁,等. 淋洗对盐胁迫下大豆生长和矿质营养基因型差异的研究[J]. 土壤学报,2003,40(1):155-159.
[10]李婧男,刘强,贾志宽,等. 盐胁迫对沙冬青幼苗生长与生理特性的影响[J]. 植物研究,2009,29(5):553-558.
[11]王树凤,陈益泰,孙海菁,等. 盐胁迫下弗吉尼亚栎生长和生理生化变化[J]. 生态环境,2008,17(2):747-750.
[12]姚静,施卫明. 盐胁迫对番茄根形态和幼苗生长的影响[J]. 土壤,2008,40(2):279-282.
[13]Kumar S G, Reddy A M, Sudhakar C. NaCl effects on proline metabolism in two high yielding genotypes of mulberry (Morus alba L.) with contrasting salt tolerance[J]. Plant Science, 2003, 165(6): 1245-1251.
[14]毛桂莲,许兴,徐兆桢. 植物耐盐生理生化研究进展[J]. 中国生态农业学报,2004,12(1):43-46.
[15]孟凡娟,王秋玉,王建中,等. 四倍体刺槐的抗盐性[J]. 植物生态学报,2008,32(3):654-663.
[16]朱新广,张其德. NaCl对光合作用影响的研究进展[J]. 植物学通报,1999,16,332-338. (责任编辑黄润州)第34卷第3期 2010年5月南京林业大学学报(自然科学版) Journal of Nanjing Forestry University (Natural Science Edition)Vol.34, No.3 May, 2010
基金
收稿日期：2009-03-18修回日期：2010-01-17基金项目：“十一五”国家科技支撑计划(2006BAD09A0406)作者简介：王利民(1979—),博士生。*陈金林(通信作者)，教授。Email: jlchen@njfu.edu.cn。引文格式：王利民,陈金林,梁珍海,等. 盆栽滨梅幼苗对NaCl胁迫的响应[J]. 南京林业大学学报:自然科学版,2010,34(3):89-92.
PDF(620507 KB)
