羊茅黑麦草、高羊茅及一年生黑麦草苗期抗旱生理初探

摘要

以羊茅黑麦草TF型(羊茅型)品种Hykor、羊茅黑麦草意大利黑麦草型品种Perny、一年生黑麦草(2倍体)品种Surrey、一年生黑麦草(4倍体)品种Angus、高羊茅牧草型品种Fawn为试验材料,采用单因素设计,通过盆栽自然干旱胁迫,研究各牧草的叶片叶绿素、可溶性糖、电导率和土壤含水量的动态变化.结果表明,5种植物种子的抗性强弱依次为:Hykor、Perny、Fawn、Angus、Surrey.%Physiological characters of drought resistance of Festuca ovina × Lolium multiflorum )(festucoid type) Hykor, Festuc a ovina × Lolium multi florum (Italian ryegrass type) Perny, Festuca arund inacea fawn, L multiflorum Surrey and L multiflorum Angus were determinated at Seedling stage under irrigation and drought stress condition in pot experiment. And a comprehensive evaluation on physiological indexes of five plants was provided. The results showed that the drought-resistant ability of five species were, from strong to weak,as follow: festuloium(festucoid type)Hykor,festuloium(ltalian ryegrass type)Perny, tall rescue fawn,annual ryegrass Angus and annual ryegrass Surrey.