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羊草生长率的研究和生长率假说的验证 预览 被引量:3

A study on growth rate and the growth rate hypothesis in Leymus chinensis
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摘要 生长率假说(GRH)是研究生物生长率与化学计量特征之间关系的理论。为了验证生长率假说,以北方草原重要建群种羊草(Leymus chinensis)为材料,将取自内蒙古和吉林省4个地点的羊草在相同的光照、水肥条件下盆栽土培,用称重法测定了羊草的生长率,用PCR的方法分析了羊草核糖体DNA基因间隔区(IGS)长度,研究了羊草生长率与羊草磷含量、氮磷比、IGS长度及取样地土壤中氮、磷含量之间的关系。结果表明,羊草生长率与羊草全磷含量存在正相关关系,与羊草氮磷比存在负相关关系,生长率较高的羊草具有较长的IGS,符合生长率假说的预测。不同来源的羊草种植在相同环境下,来自氮、磷含量较高土壤的羊草具有较高的生长率,这可能是羊草对特定地域生境条件长期适应的结果。高的生长率和长的IGS可能是植物对较高氮、磷含量环境的适应。 The growth rate hypothesis (GRH) concerns the relationship between the stoichiometry of an organism and its growth rate. To verify the growth rate hypothesis, four samples of Leymus chinensis from different areas in Inner Mongolia and Jilin province were collected and cultured in pots under the same light, water and fertilizer conditions. The plant growth rate was measured by weighing method. The IGS (intergenic spacer) length of plants was measured by PCR method. The relationships between growth rate and content of N, P of plants; growth rate and IGS length; and growth rate and content of N, P of the sampling site soil were studied. The results showed as the following: there were a positive correlation between growth rate and content of plant P and a negative correlation between growth rate and N to P ratio of plants. The higher growth rate of plants had the longer IGS. These results accorded with the prediction of the GRH. The plants collected from the sampling site with higher content of soil N and P had higher growth rate, which might indicated adaptive evolution of L. chinensis to specific geographical habitat con-ditions in long-term. The higher growth rate and longer IGS length might be caused by the adaptation of L. chinensis to high content of N and P in the environment.
作者 徐劲草 许新宜 XU Jin-cao, XU Xin-yi (College of Water Sciences, Key Laboratory for Water and Sediment Science of Ministry of Education, Beijing Normal University,Beijing 100875, China)
出处 《草业科学》 CAS CSCD 北大核心 2013年第1期74-79,共6页 Pratacultural Science
基金 国家自然科学基金(青年基金)“植被坡面水流动力学及输沙能力确定”(40801103)
关键词 生长率假说 羊草 IGS长度 氮磷比 the growth rate hypothesis Leymus chinensis IGS length N to P ratio
作者简介 徐劲草(1982-),男,四川崇州人,博士,主要从事生态学研究。E—mail:x@ncao@mail.bnu.edu.cn 通信作者:许新宜(1954-),男,湖北宜昌人,教授,博士生导师,主要从事水资源、生态学与环境科学研究。E-mail:xuxinyi@bnu.edu.cn
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  • 1Elser J J,Sterner R W,Gorokhova E. Biological stoichiometry from genes to ecosystems[J].Ecology Letters,2000,(06):540-550.doi:10.1046/j.1461-0248.2000.00185.x. 被引量:1
  • 2Schimel D S. All life is chemical[J].Bioscience,2003.521-524. 被引量:1
  • 3Weider L J,Glenn K L,Kyle M. Associations among ribosomal (r)DNA intergenic spacer length,growth rate,and C:N:P stoichiometry in the genus Daphnia[J].Limnology and Oceanography,2004,(04):1417-1423. 被引量:1
  • 4Shimizu Y,Urabe J. Regulation of phosphorus stoichiometry and growth rate of consumers:theoretical and experimental analyses with Daphnia[J].Oecologia,2008,(01):21-31.doi:10.1007/s00442-007-0896-7. 被引量:1
  • 5Andersen T,Flser J J,Hessen D O. Stoichiometry and population dynamics[J].Ecology Letters,2004,(09):884-900.doi:10.1111/j.1461-0248.2004.00646.x. 被引量:1
  • 6Moe S J,Stelzer R S,Forman M R. Recent advances in ecological stoichiometry:Insights for population and community ecology[J].Oikos,2005,(01):29-39. 被引量:1
  • 7Elser J J,Dobberfuhl D,Mackay N A. Organism size,life history,and N:P stoichiometry.towards a unified view of cellular and ecosystem processes[J].Bioscience,1996.674-684. 被引量:1
  • 8Elser J J,Acharya K,Kyle M. Growth rate-stoichiometry couplings in diverse biota[J].Ecology Letters,2003,(10):936-943.doi:10.1046/j.1461-0248.2003.00518.x. 被引量:1
  • 9Gorokhova E,Dowling T E,Weider L J. Functional and ecological significance of rDNA intergenic spacer variation in a clonal organism under divergent selection for production rate[J].Proceedings of the Royal Society of London Series B:Biological Sciences,2002,(1507):2373-2379. 被引量:1
  • 10邢福,李建和.线叶菊草地地下植物量及其生长率的动态分析[J].草业科学,1996,13(1):24-28. 被引量:2

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