打顶时期和留叶数对山东烤烟上部叶生长发育的影响

韩玉环, 刘晨, 杨龙, 于涛

Effects of Topping Period and Number of Remained Leaves on Growth and Development of Upper Leaves of Flue-Cured Tobacco in Shandong Province

Han Yuhuan, Liu Chen, Yang Long, Yu Tao

表4 打顶时期与留叶数对上部烟叶保护酶活性及MDA含量的影响

Table 4 Effects of topping time and remained leaf number on protective enzyme activities and MDA content of upper leaves

处理 Treatment SOD活性 SOD activity [U/(g?min)] POD活性 POD activity (U/g) CAT活性 CAT activity [U/(g?min)] MDA含量 MDA content (mmol/g) T1 245.62±9.53a 268.69±2.61a 255.70±4.04a 56.36±0.56c T2 239.99±9.37a 243.26±5.97b 237.21±6.72ab 59.18±0.90bc T3 212.85±11.39b 212.60±8.21c 206.48±4.32c 69.70±1.02a T4 241.11±5.46a 267.34±7.34a 237.03±7.67ab 57.05±1.95c T5 226.57±3.59ab 260.89±4.57ab 232.44±8.06b 61.75±2.23b T6 223.34±3.44ab 214.80±9.79c 210.87±3.71c 66.41±1.15a