盐胁迫对多年生黑麦草和草地早熟禾种子萌发影响的对比研究  

COMPARATIVE STUDIES OF EFFECT OF SALT STRESS ON LOLIUM PERENNE AND POA PRATENSIS SEED GERMINATION

作　　者：陈国雄[1] 李定淑 张志谦[1] 杜虎林[1] 

机构地区：[1]中国科学院兰州沙漠研究所,兰州730000

出　　处：《草业科学》1996年第3期41-44,47,共5页Pratacultural Science

摘　　要：用不同浓度地下盐水胁迫多年生黑麦草和草地早熟禾种子萌发,观察发芽率和萌发后幼苗的生长,并计算发芽指数(G_i)和活力指数(VI),对它们进行对比分析。结果表明:多年生黑麦草种子萌发对盐水生境的适应性比草地早熟禾强。多年生黑麦草种子萌发盐胁迫适宜值为0.77g/100cm^3,而草地早熟禾种子萌发盐胁迫适宜值为0.09g/100cm^3。Germination percentages,growth of seedling,germination index and vigour index of Lolium perenne and Poa pratensis seeds were tested under the different salt stresses.The results indicat- ed that the seed germination of Lolium perenne was more adaptable to saline water than that of Poa pratensis,and the suitability of salt content to seed germination are 0.77g/100cm^3 for Lolium perenne and 0.09g/100cm^3 for Poa pratensis.

关 键 词：多年生黑麦草 草地早熟禾 种子萌发 盐胁迫 

分 类 号：S543.601[农业科学—作物学]