不同时期干旱胁迫对甘薯生长和抗氧化能力的影响

张海燕,解备涛,汪宝卿,董顺旭,段文学,张立明

Effects of Drought Treatments at Different Growth Stages on Growth and the Activity of Antioxidant Enzymes in Sweetpotato

HaiYan ZHANG,BeiTao XIE,BaoQing WANG,ShunXu DONG,WenXue DUAN,LiMing ZHANG

表3 不同时期干旱胁迫对甘薯地上部和地下部生物量的影响

Table 3 Effects of drought stress at different stages on dry biomass of aboveground and underground part in sweetpotato (g/plant)

处理 Treatment 栽植后天数 Days after planting (d) 济薯21 JS 21 济紫薯1号 JZ 1 40 60 80 100 40 60 80 100 地上部生物量 Biomass of aboveground part WW 18.93±1.65a 58.56±2.45a 79.76±2.15a 87.24±2.77a 19.52±1.84a 62.79±2.04a 75.72±2.14a 85.13±2.63a DS1 13.49±1.4b 40.43±1.31c 46.43±1.87d 61.79±3.48d 13.38±0.69b 36.20±2.64c 42.24±3.56d 53.27±1.73d DS2 18.21±1.74a 46.49±2.26b 60.52±2.74c 73.31±3.14c 23.65±1.37a 43.56±3.15b 56.34±2.46c 68.87±3.04c DS3 19.56±1.88a 59.54±2.04a 70.24±2.34b 79.73±1.65b 21.61±1.04a 59.74±3.05a 66.75±3.12b 77.28±3.18b 地下部生物量 Biomass of underground part WW 1.43±0.58a 5.39±0.36a 17.89±0.59a 31.13±0.69a 1.65±0.25a 6.82±0.79a 15.36±1.08a 30.96±1.05a DS1 0.83±0.35b 3.95±0.90c 11.21±0.69d 20.96±1.16d 0.81±0.25bc 3.43±0.25c 7.83±0.48d 16.26±1.12d DS2 1.27±0.19a 4.71±0.68b 13.72±0.66c 24.65±1.19c 1.26±0.24ab 4.41±0.57b 10.66±0.17c 22.23±0.98c DS3 1.36±0.77a 5.72±1.02a 16.18±0.39b 28.44±1.48b 1.73±0.38a 6.28±0.47a 13.75±1.07b 26.97±1.06b