摘要
试验以在科尔沁沙地和盐碱地生长的羊草、芦苇、苔草、扁蓿豆四种多年生牧草为材料,检测其膜质过氧化程度和抗氧化酶活性。结果表明,盐碱地生境对四种牧草的伤害较沙地严重,四种牧草对两种逆境的适应表现是芦苇>羊草>苔草>扁蓿豆。由抗氧化酶活性测定可知,沙生牧草主要通过增强POD酶活性,盐生牧草主要通过增强SOD和CAT酶活性提高其抗氧化能力,四种牧草的抗氧化酶活性之间有明显的差异。
The physiological indexes of peroxided degree of membrane and activities of antioxidant enzymes in four kinds of perennial grasses （such as Leymus chinensis , Phragmites communis, Carex duriuscula, Melilotoides ruthenica） grown in salt-alkaline and sandy land of Herqin were determined . The results showed that： compared to sandy land, saline-alkali land seriously effected development of four kinds of forage grasses. The adaptation of two stresses on four kinds of forage grass was that Phragmites communis〉 Leymus chinensis 〉Carea： duriuscula 〉 Melilotoides ruthenica ; as far as activities of antioxidant enzymes concerned, forage grasses in sandy land mainly enhanced activity of POD to improve their antioxidant ability, but forage grasses in saline-alkali land improved their antioxidant ability through increasing activities of SOD and CAT. And activities of antioxidant enzymes among four kinds of forage grasses had obvious differences.
出处
《中国草地学报》
CSCD
2007年第5期115-118,共4页
Chinese Journal of Grassland
关键词
沙生牧草
盐生牧草
膜脂过氧化
抗氧化酶
Forage grasses in sandy land
Forage grasses in alkaline land
Antioxidant enzyme
