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3 干旱胁迫对垂穗披碱草幼苗生长的影响

Table 3 Effects of drought stress on growing of E. nutans seedlings

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 根长 (cm) 5.32±1.15a 4.97±1.22a 4.84±1.31ab 4.12±0.94ab 3.56±1.36ab 3.05±0.95b 芽长 (cm) 12.92±2.26a 11.45±2.71ab 10.39±1.96ab 7.93±2.05b 5.72±1.59bc 4.01±2.30c 根芽比 0.41±0.01b 0.43±0.01b 0.47±0.03ab 0.52±0.02ab 0.62±0.01ab 0.76±0.04a Ⅱ号No.Ⅱ 根长 (cm) 4.83±1.05a 4.76±1.24a 4.52±1.35a 3.88±1.69ab 3.43±1.48ab 2.74±0.97b 芽长 (cm) 12.34±1.47a 10.71±1.77ab 9.77±1.82ab 7.64±2.13b 6.07±1.91b 3.65±1.22c 根芽比 0.39±0.01b 0.44±0.02b 0.46±0.03ab 0.51±0.02ab 0.56±0.02ab 0.75±0.03a 巴青垂穗披碱草 根长 (cm) 5.69±1.72a 6.15±2.03a 6.03±2.46a 5.63±1.92a 5.10±2.33a 4.32±2.15a E.nutans G. cv. Baqing 芽长 (cm) 13.80±2.35a 12.86±1.34a 11.69±3.01a 9.50±2.17ab 7.99±1.42b 5.32±1.09b 根芽比 0.41±0.02b 0.47±0.04b 0.52±0.02ab 0.59±0.01ab 0.64±0.01ab 0.81±0.02a