二甲四氯胁迫对谷子幼苗叶片衰老特性和 内源激素含量的影响

郭美俊,白亚青,高鹏,申洁,董淑琦,原向阳,郭平毅

Effect of MCPA on Leaf Senescence and Endogenous Hormones Content in Leaves of Foxtail Millet Seedlings

MeiJun GUO,YaQing BAI,Peng GAO,Jie SHEN,ShuQi DONG,XiangYang YUAN,PingYi GUO

表2 不同二甲四氯处理谷子叶片抗氧化酶活性和MDA活性的比较

Table 2 Comparison of the superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) activities and malonaldehyde (MDA) contents of foxtail millet leaves among treatments

品种 Cultivars 时间 Time 有效剂量 Effective dosage (kg·hm-2) 超氧化物歧化酶 SOD activity (U·min-1·g-1 FW) 过氧化物酶活性 POD activity (μmol·min-1·g-1 FW) 过氧化氢酶活性 CAT activity (U·min-1·g-1 FW) 丙二醛含量 MDA content (nmol·g-1 FW) 晋谷21号 Jingu 21 5 DAT 0 71.67±2.79d 223.96±7.24c 54.62±0.81d 10.73±0.33e 0.75 189.42±8.34c 225.08±11.27c 66.71±0.80c 16.94±0.13d 1.50 247.32±7.30b 226.14±0.23c 68.43±0.42bc 18.52±0.00c 3.00 319.68±3.09a 284.43±1.29b 70.27±0.64b 29.02±0.19b 6.00 317.72±5.03a 367.47±3.76a 80.29±1.48a 34.32±0.26a 15 DAT 0 95.80±1.69c 25.13±0.81e 52.51±1.00b 10.16±0.39c 0.75 95.80±1.69c 61.75±1.73d 53.05±0.26b 10.16±0.39c 1.50 104.06±1.75c 76.52±1.54c 64.31±2.38a 11.97±0.39b 3.00 171.43±6.60b 121.20±0.64a 64.65±0.54a 16.26±0.04a 6.00 292.85±6.58a 112.09±1.77b 66.44±0.43a 16.94±0.48a 张杂10号 Zhangza 10 5 DAT 0 94.01±0.61d 71.43±5.37d 45.77±1.77d 15.71±0.01c 0.75 123.96±0.01c 74.20±2.48d 48.12±1.15cd 21.99±0.77b 1.50 125.38±7.72c 113.24±0.20c 53.29±0.95bc 22.21±1.25b 3.00 143.19±0.77b 141.06±0.61b 56.13±1.19ab 25.39±0.36a 6.00 156.78±2.05a 218.56±0.05a 61.26±3.15a 25.66±0.49a 15 DAT 0 83.56±2.71d 28.71±0.13e 41.78±0.53d 14.90±0.33b 0.75 88.43±0.27d 83.56±0.95d 43.33±0.73cd 15.70±1.02ab 1.50 102.22±0.98c 88.98±0.52c 44.76±0.37c 16.40±0.34ab 3.00 124.70±0.94b 103.26±1.52b 48.29±0.11b 17.21±1.18ab 6.00 159.30±0.04a 167.78±0.42a 53.02±0.20a 18.70±0.83a