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2 干旱胁迫对垂穗披碱草种子萌发的影响

Table 2 Effects of drought stress on seed germination of E. nutans

材料Material 指标 Index 环境水势Environmental water potential 0.00MPa -0.10MPa -0.20MPa -0.40MPa -0.80MPa -1.00MPa Ⅰ号No.Ⅰ GP (%) 84.50±2.11aA 76.50±4.32aA 63.00±4.90abA 48.50±4.82bA 36.75±3.90bcA 25.50±0.87cB GI 40.03±1.27aA 32.45±3.50aA 26.67±3.69abA 20.21±3.71bA 12.85±4.78bcA 10.53±1.22cA VI 212.96±5.33aA 161.28±7.12abA 129.08±6.90bA 83.27±2.50cB 45.75±1.27dB 32.12±3.23dB Ⅱ号No.Ⅱ GP (%) 85.25±2.21aA 76.50±2.64abA 66.25±2.33abA 53.75±3.40bA 38.50±4.45bcA 29.25±2.21cB GI 43.44±3.34aA 35.67±4.07aA 30.89±2.61abA 23.79±4.26bA 17.67±2.89bcA 14.45±3.34cA VI 253.26±7.12aA 217.39±3.14abA 145.18±3.83bA 92.31±1.67cB 60.61±1.48dB 47.97±7.12dB 巴青垂穗披碱草 GP (%) 92.50±2.53aA 93.50±4.13aA 72.50±3.45aA 66.25±3.36abA 46.00±4.79bA 32.50±1.49bB E.nutans G. cv. Baqing GI 47.25±2.78abA 53.10±2.76aA 39.82±1.90abA 33.45±2.96bA 22.98±5.39bA 19.50±1.33bA VI 287.94±4.32aA 326.57±5.76aA 226.58±7.84abA 173.84±4.62bA 108.70±3.59cB 53.43±4.20dB