全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
草业学报  2009 

四种暖季型草坪植物的盐胁迫反应及其耐盐阈值

, PP. 192-199

Keywords: 暖季型草坪草,盐胁迫,耐盐阈值

Full-Text   Cite this paper   Add to My Lib

Abstract:

以百慕大‘Tifdwarf’、假俭草、海滨雀稗‘Salam’和结缕草4种暖季型草坪植物为材料,研究了不同盐(NaCl)浓度处理对草坪植物生长和生理的影响。结果表明,海滨雀稗耐盐性最好,海滨雀稗的目测质量、相对生长率、叶片相对含水量、叶绿素指数、光化学效率在600mmol/L盐浓度处理36d时分别下降了52.2%,76.2%,62.1%,59.4%和72.9%,相对电导率上升至71.5%,与其他3个草种相比,海滨雀稗各指标仍能维持较高的水平,膜伤害程度相对较小;结缕草耐盐性次之,600mmol/L盐处理36d时目测质量、相对生长率、叶片相对含水量、叶绿素指数、光化学效率分别下降了85.2%,85.3%,70.5%,73.9%和49.3%,相对电导率上升至81.8%,表现出较好的耐盐性;耐盐性表现很差的为百慕大和假俭草,在600mmol/L盐浓度处理36d时,2种草的各指标皆下降至0,膜伤害程度达到最大,草坪草已枯死。盐处理36d时,将生长量与盐处理浓度建立回归方程,以生长量下降50%作为耐盐阈值的确定指标,求得4个草种的耐盐阈值分别为为:假俭草222.4mmol/L,百慕大232.4mmol/L,结缕草374.8mmol/L和海滨雀稗474.0mmol/L。

References

[1]  Munns R. Genes and salt tolerance: Bringing them together[J[. New Phytologist, 2005, 167: 645-663.
[2]  黄昌勇. 土壤学[M[. 北京: 中国农业出版社, 2000. 303.
[3]  周兴元, 曹福亮. NaCl胁迫对几种暖季型草坪草的影响[J[. 草原与草坪, 2005, (4): 66-69.
[4]  陈静波, 阎君, 张婷婷, 等. 四种暖季型草坪草对长期盐胁迫的生长反应[J[. 草业学报, 2008, 17(5): 30-36. 浏览
[5]  陈平, 席嘉宾. 海滨型野生假俭草的盐胁迫效应研究[J[. 中山大学学报, 2006, 45(5): 85-92.
[6]  Marcum K B, Anderson S J, Engelke M K. Salt gland ion secretion: A salinity tolerance mechanism among five Zoysiagrsss species[J[. Crop Science, 1998, 38: 806-810.
[7]  Marcum K B, Murdoch C L. Salinity tolerance mechanisms of six C4 turfgrasses[J[. Journal of the American Society for Horticultural Science, 1994, 119: 779-784.
[8]  Maas E V. Salt tolerance of plants[J[. Applied Agricultural Research, 1986, 1: 12-26.
[9]  Kuiper P J C, Kuiper D, Schuit J. Root functioning under stress conditions: An introduction[J[. Plant Soil, 1988, 111: 249-258.
[10]  Mladenova Y I. Influence of salt stress on primary metabolism of Zea mays L. seedlings of model genotypes[J[. Plant Soil, 1990, 123: 217-224.
[11]  Qian Y L, Fu J M. Response of creeping bentgrass to salinity and mowing management: Carbohydrate availability and ion accumulation[J[. HortScience, 2005, 40: 2170-2174.
[12]  Qian Y L, Wilhelm S J, Marcum K B. Comparative responses of two Kentucky bluegrass cultivars to salinity stress[J[. Crop Science, 2001, 41: 1895-1900.
[13]  Suplick-Ploense M R, Qian Y L, Read J C. Relative NaCl tolerance of Kentucky bluegrass, Texas bluegrass and their hybrids[J[. Crop Science, 2002, 42(6): 2025-2030.
[14]  Alshammary S F, Qian Y L, Wallner S J. Growth response of four turfgrass species to salinity[J[. Agricultural Water Management, 2004, 66(1): 97-111.
[15]  Levitt J. Response of Plants to Environmental Stress[M[. NewYork: Aedemic Press, 1980.
[16]  Xu Q Z, Huang B R, Wang Z L. Differential effects of lower day and night soil temperatures on shoot and root growth of creeping bentgrass[J[. HortScience, 2003, 38(3): 449-454.
[17]  Fu J M, Huang B R. Involvement of antioxidants and Lipid peroxidation in the adaptation of two cool-season grasses to localized drought stress[J[. Environmental and Experimental Botany, 2000, 10: 698-710.
[18]  吕芳德, 徐德聪, 侯红波. 5种红山茶叶绿素荧光特性的比较研究[J[. 经济林业研究, 2003, 21(4): 4-7.
[19]  吴欣明, 王运琦, 刘建宁, 等. 羊茅属植物耐盐性评价及其对盐胁迫的生理反应[J[. 草业学报, 2007, 16(6): 67-73.
[20]  赵昕, 赵敏桂, 谭会娟, 等. NaCl胁迫对盐芥和拟南芥K+、Na+吸收的影响[J[. 草地学报, 2007, 16(4): 21-24.
[21]  Munns R. Comparative physiology of salt and water stress[J[. Plant, Cell and Environment, 2002, 25: 239-250.
[22]  Lee G J, Carrow R N, Duncan R R. Growth and water relations responses to salt stress in halophytic seashore paspalum ecotypes[J[. Science Horticulture, 2004, 104: 221-236.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133