3种草坪草的耐盐性差异及其叶片的显微结构研究  

Salt Resistance Between Three Kinds of Turfgrass and Related Research about Their Leaf Microstructure

作　　者：陈智勇[1] 胡忠红[2] 蒋建雄[1] 易自力[1] 

机构地区：[1]湖南农业大学生物科学技术学院,长沙410128 [2]湖南农业大学东方科技学院,长沙410128

出　　处：《中国农学通报》2011年第19期272-276,共5页Chinese Agricultural Science Bulletin

基　　金：湖南省自然科学基金项目(05JJ30036);湖南省教育厅科学研究重点基金项目(05A022)

摘　　要：为了解羊茅属高羊茅(Festuca arundinaceaL)、早熟禾属草地早熟禾(Poa pratensisL)、黑麦草属多年生黑麦草(Lolium PerenneL)的耐盐性,以高羊茅(‘凌志’、‘爱瑞三号’、‘阳光宝贝’)、草地早熟禾(‘纳苏’,‘抢手股’,‘优异’)、多年生黑麦草(‘首相’、‘焦点’)共8个品种为材料,在不同浓度的NaCl水培营养液中对各种材料幼苗进行耐盐处理。试验结果表明:草地早熟禾的耐盐临界浓度为200mmol/L,高羊茅和多年生黑麦草的耐盐临界浓度为150mmol/L;并确定8个品种的耐盐性差异:‘抢手股’最好,‘首相’最差。同时,对其相关叶片显微结构(泡状细胞、维管束、表皮细胞、气孔器)进行了分析,结果表明:草地早熟禾由于具有与耐盐植物相近的结构而更能耐受较高的盐浓度。In order to understand the salt tolerance of Festuca arundinacea L, Poa pratensis L and Lolium Perenne L, 8 different varieties, Festuca arundinacea L （ ‘ Barlexas ’ , ‘ AridⅢ ’ , ‘ Sunboy ’ ）, Poa pratensis L （ ‘ Nassau ’ , ‘ Bluechip ’ , ‘ Merit ’ ） and Lolium Perenne L （ ‘ Prime ’ , ‘ Focus ’ ） had been treated by nutrient solution in different concentration of NaCl. The results showed that： the critical salt concentration of Poa pratensis L was 200 mmol/L, and the critical salt concentration of Festuca arundinacea L and Lolium Perenne L was 150 mmol/L; salt-tolerance of the differences： ‘ Bluechip ’ was the best, ‘ Prime ’ was the worst. The related leaf microstructures had been observed also, that included bulliform cell, vascular, epidermic cellstomatal apparatus. The results indicated： the capacity of salt tolerance of Poa pratensis L was due to its microstructures similar with other salt-tolerant plants.

关 键 词：草坪草 耐盐差异 叶片显微结构 

分 类 号：S688.4[农业科学—观赏园艺]