西藏3份垂穗披碱草耐旱性评价

西藏3份垂穗披碱草耐旱性评价

周晶, 孙侃, 周忠义, 王传旗, 苗彦军

Evaluation of Drought Tolerance of Three Elymus nutans in Tibet

Zhou Jing, Sun Kan, Zhou Zhongyi, Wang Chuanqi, Miao Yanjun

表6 干旱胁迫下幼苗叶片抗氧化酶活性变化

Table 6 Changes of antioxidant enzyme activities in seedling leaves under drought stress

材料 Material	指标 Index	干旱胁迫天数Drought stress days
材料 Material	指标 Index	0d	7d	14d	21d
Ⅰ号No.Ⅰ	SOD [U/(g FW·h)]	27.94±3.21cB	45.15±2.97bAB	79.36±5.04aA	69.10±5.33aA
	POD [U/(g FW·min)]	115.40±6.39bA	186.90±5.72aA	273.40±9.31aA	253.70±8.04aA
	CAT [mg H₂O₂/(g FW·min)]	10.41±2.83bA	22.04±4.11aA	29.49±3.76aA	27.67±3.25aA
Ⅱ号No.Ⅱ	SOD [U/(g FW·h)]	18.59±4.52cB	32.74±5.26bAB	60.43±4.92aA	57.06±5.67aA
	POD [U/(g FW·min)]	117.20±6.33bA	189.80±7.39aA	256.90±9.34aA	231.70±8.56aA
	CAT [mg H₂O₂/(g FW·min)]	6.56±2.47bA	17.09±4.41aA	23.50±3.97aA	18.71±4.08aA
巴青垂穗披碱草	SOD [U/(g FW·h)]	23.72±5.36cB	48.45±4.73bAB	87.12±5.69aA	82.33±4.92aA
E.nutans G. cv. Baqing	POD [U/(g FW·min)]	186.10±7.04bA	279.90±9.31aA	369.80±10.22aA	353.60±9.87aA
	CAT [mg H₂O₂/(g FW·min)]	9.81±2.57bA	26.67±3.45aA	34.51±4.73aA	33.21±4.09aA