干旱胁迫下枯草芽孢杆菌对玉米种子抗旱性及生理指标的影响

李安, 舒健虹, 刘晓霞, 蒙正兵, 王小利, 赵德刚

Effects of Bacillus subtilis on Drought Resistance and Physiological Indexes of Maize Seeds under Drought Stress

Li An, Shu Jianhong, Liu Xiaoxia, Meng Zhengbing, Wang Xiaoli, Zhao Degang

表5 干旱胁迫下玉米萌发指标相关性分析

Table 5 Correlation analysis of maize germination indexes under drought stress

指标 Index 芽长 Bud length 根长 Root length 根数 The number of root 总生物量干重 Total biomass dry weight 芽干重 Bud dry weight 根干重 Root dry weight 根冠比 Root shoot ratio 芽鲜重 Bud fresh weight 根鲜重 Fresh root 发芽指数 Germination index 活力指数 Vitality index 幼苗含水量 Seedling moisture content 发芽率 Germination rate 发芽势 Germination potential 抗旱性量度值(D) Drought resistance measure (D) 芽长Bud length 1 根长Root length 0.803* 1 根数The number of root 0.656* 0.507 1 总生物量干重 Total biomass dry weight 0.478 0.387 0.320 1 芽干重Bud dry weigh 0.307 0.223 -0.057 0.142 1 根干重Root dry weight 0.226 0.143 0.229 -0.099 -0.032 1 根冠比Root shoot ratio 0.085 -0.077 0.079 -0.159 -0.388 0.862* 1 芽鲜重Bud fresh weight 0.674* 0.399 0.282 0.535 0.255 0.108 0.054 1 根鲜重Fresh root 0.194 0.338 -0.236 -0.048 0.347 0.103 -0.029 0.216 1 发芽指数Germination index -0.525 -0.264 -0.361 -0.557 -0.341 -0.385 -0.231 -0.668* 0.112 1 活力指数Vitality index 0.015 0.164 -0.201 -0.488 0.198 -0.163 -0.227 -0.289 0.587* 0.705 1 幼苗含水量 Seedling moisture content 0.497 0.494 0.059 0.045 0.780* -0.091 -0.388 0.268 0.659* -0.107 0.575 1 发芽率Germination rate -0.276 -0.360 -0.138 -0.581* -0.379 -0.471 -0.148 -0.330 -0.187 0.436 0.221 -0.156 1 发芽势Germination potential -0.432 -0.362 -0.286 -0.520 -0.243 -0.580 -0.285 -0.420 -0.178 0.458 0.153 -0.172 0.861* 1 抗旱性量度值(D) Drought resistance measure (D) 0.444 0.503* 0.382 0.229 0.131 -0.184 -0.245 0.008 0.488 0.303 0.682* 0.601* 0.347 0.273 1