为了阐明盐胁迫条件下紫花苜蓿种子的发芽性状表现和种子萌发期耐盐性能强弱，同时为改良盐碱化土壤提供更加耐盐碱的植物品种，提高盐碱化土地资源利用率，本试验以5个苜蓿(Medicago sativa)品种为材料，采用不同浓度NaCl处理(0、0.4%、0.8%、1.2%)，研究了不同盐浓度对苜蓿种子发芽率、发芽势、苗高、根长的影响。结果表明，盐胁迫对苜蓿种子发芽性状均有较大影响，随着NaCl浓度的提高，苜蓿种子发芽率和发芽势降低，苗长和根长明显缩短，而且，高质量浓度盐胁迫对苜蓿种子发芽性状的影响尤为显著。不同苜蓿品种在不同盐浓度间的差异显著；品种间各指标的表现不尽相同，发芽势与发芽率指标在品种间的差异显著，苗高和幼根长指标在品种间的差异不显著。综合单项指标耐盐系数和品种综合耐盐指数来看，5个苜蓿品种的耐盐性能强弱顺序为‘Magnum salt’>‘中苜1号’>‘维多利亚’>‘巨人201T’>‘皇冠’。
Abstract
In order to clarify the seed germination characteristics of alfalfa under salt stress and salt tolerance in seed germination stage, provide salt-tolerant varieties for the improvement of soil salinization and enhance the utilization rate of saline and alkaline soil, five alfalfa varieties were used as materials, the effect of different concentrations of NaCl (0, 0.4%, 0.8%, 1.2%) on the main seed germination characteristics, including germination rate, germination energy, seedling height, root length, were studied. The results showed that the main seed germination characteristics were greatly affected by salt stress. With the increase of NaCl concentration, germination rate and germination energy decreased significantly, and seedling height and root length shortened significantly. The influence of high concentration NaCl on seed germination characteristics was particularly noticeable. Different alfalfa varieties showed significant differences among different salt concentrations. Germination energy and germination rate were significantly different among different alfalfa varieties, while seedling height and root length were not significantly different among different varieties. Considering both individual index and comprehensive index of salt tolerance, under the condition of this experiment, the order of salt tolerance of alfalfa varieties was ‘Magnum salt’>‘Zhongmu No.1’>‘Victoria’ > ‘Ameristand 201T’ > ‘Phabulous’.
关键词
苜蓿；耐盐性；发芽率；发芽势；苗高；根长
{{custom_keyword}} /
Key words
alfalfa; salt tolerance; germination rate; germination energy; seedling height; root length
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 王健胜,牛磊,侯桂玲,等.盐胁迫对不同品种苜蓿种子发芽性状的影响[J].河南农业科学,2014(6):39-43.
[2] 刘卓,王志锋,于洪柱,等.不同苜蓿品种种子萌发期耐盐性的研究[J].云南农业大学学报,2010,25(3):358-364.
[3] 刘卓,徐安凯,王志锋.13个苜蓿品种耐盐性的鉴定[J].草业科学,2008,25(6):51-55.
[4] 龚明,刘友良,丁念诚,等.小麦不同生育期的耐盐性差异[J].西北植物学报,1994,14(1):1-7.
[5] AI-Khatib M, Mcneilly T, Collins J C. The potential of selection and breeding for improved salt tolerance in Lucerne(Medicago sativa L.)[J].Euphytica,1992,65(1):43-51.
[6] 沙吾列·沙比汗,张荟荟,杨刚等.12份苜蓿种质材料苗期耐盐性综合评价[J].草食家畜,2014(3):29-34.
[7] 韩清芳,李崇巍,贾志宽.不同苜蓿品种种子萌发期耐盐性的研究[J].西北植物学报,2003,23(4):597-602.
[8] 王瑞峰,王铁梅,金晓明,等.11个审定苜蓿品种种子萌发期耐盐性评价[J].草业科学,2012,29(2):213-218.
[9] 梁云媚,李燕.不同盐分胁迫对苜蓿种子萌发的影响[J].草业科学,1998,15(6):21-25.
[10] 范方,张玉霞,姜健,等.盐胁迫及解除胁迫后对紫花苜蓿萌发的影响[J].江苏农业科学,2013,41(1):195-199.
[11] 王瑞峰,卢欣石.23个审定苜蓿品种萌发期耐盐性评价[A].第四届(2011)中国苜蓿发展大会论文集[C].中国畜牧业协会,2011:5.
[12] 王玉民,刘艳芝,王中伟,等.我国苜蓿耐盐性研究现状及评述[J].吉林农业科学,2005,30(6):47-49.
[13] 刘晶,才华,刘莹,等.两种紫花苜蓿苗期耐盐生理特性的初步研究及其耐盐性比较[J].草业学报,2013,22(2):250-256.
[14] 翟登攀,薛勇,吴玉德.紫花苜蓿种子盐胁迫下萌发特性的试验研究[J].科技信息,2009(13):39-39.
[15] 李婷婷,张月学,张海玲,等.18个苜蓿品种种子萌发期的耐盐性研究[J].黑龙江农业科学,2012(4):110-113.
[16] 桂毓.苜蓿和沙冬青种子萌芽期的耐盐性研究[J].天津农业科学,2014,20(12):105-108.
[17] 王存纲,王跃强.盐胁迫对苜蓿种子萌发特性的影响[J].江苏农业科学,2011(4):277-278.
[18] 贾利霞,张众.NaCl胁迫对苜蓿种子萌发的影响[J].内蒙古草业, 2008(1):40-42.
[19] 景艳霞,袁庆华.NaCl胁迫对苜蓿幼苗生长及不同器官中盐离子分布的影响[J].草业学报,2011,20(2):134-139.
[20] 景艳霞,袁庆华.不同钠盐胁迫对苜蓿种子萌发的影响[J].种子,2010,29(2):69-72.
[21] 王征宏,杨起,张亚冰.盐胁迫下紫花苜蓿种子的萌发特性[J].河南科技大学学报:自然科学版,2006,27(1):67-69.
[22] 秦峰梅,张红香,武祎,等.盐胁迫对黄花苜蓿发芽及幼苗生长的影响[J].草业学报,2010,19(4):71-78.
[23] 陈水红,杨厚安,张剑云,等.NaCl胁迫对紫花苜蓿种子萌发及幼苗生长的影响[J].塔里木大学学报,2009,21(1):23-26.
[24] 岳明强,刘艳昆,徐玉鹏,等.紫花苜蓿萌发出苗期的耐盐鉴定方法[J].草业科学,2012,29(1):88-91.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(1670 KB)
