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草业学报 ›› 2009, Vol. 18 ›› Issue (4): 75-80.

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三种野生岩生草本植物的抗旱性综合评价

谢贤健1,兰代萍2,白景文3   

  1. 1.内江师范学院资源与环境科学院,四川 内江 641000;
    2.内江师范学院后勤基建处,四川 内江 641000;

    3.中国科学院成都生物研究所,四川 成都 610041
  • 收稿日期:2008-10-29 出版日期:2009-08-20 发布日期:2009-08-20
  • 作者简介:谢贤健(1978-),男, 四川广汉人,博士。E-mail:xxj007-14@tom.com
  • 基金资助:
    国家科技部十五攻关项目(2001ba606a-6)资助。

A comprehensive assessment of drought-resistance of three wild rocky-slope grasses

XIE Xian-jian1, LAN Dai-ping2, BAI Jing-wen3   

  1. 1.School of Resources and Environment Science of Neijiang Normal University, Neijiang 641000, China;
    2.Logistic Department of Neijiang Normal University, Neijiang 641000, China; 3.Institute
    of Biology, Chinese Academy of Sciences, Chengdu 610041, China
  • Received:2008-10-29 Online:2009-08-20 Published:2009-08-20

摘要: 本试验选择自然状态下生长在岩石边坡上的3种野生岩生植物金发草和丛毛羊胡子草以及狗牙根为研究材料,通过盆栽干旱胁迫试验,研究和分析了干旱胁迫下3种野生岩生植物的叶面积指数、地下干物质量积累、叶片保水力;叶片相对电导率、可溶性蛋白、叶绿素等形态和生理指标,利用主成分分析法和隶属函数值法对影响3种野生岩生植物抗旱性的指标进行了分析评价。试验结果表明,3种草的抗旱性强弱顺序为金发草>狗牙根>丛毛羊胡子草。研究结果以期为筛选、培育适应于岩石边坡植被防护的乡土护坡植物的合理开发、利用提供理论依据。

Abstract: The drought-resistance of three native, rocky-slope grasses (Pogonatherum paniceum, Eriophorum comosum and Cynodon dactylon) were studied in a pot experiment. Indexes such as leaf area index, drying roots accumulation, leaf holding water ability, leaf relative conductance, soluble protein, chlorophyll were analysed and a comparison of the subordinate function values of each grass was used to decide the drought-resistance order of each grass. Drought-resistance of P. panideum was stronger than C. dactylon which was stronger than E. comosum. This is useful to provide a theoretical foundation for selecting and cultivating native slope-protecting vegetation adapted to rocky slopes.

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