Autotoxicity potential of cotton tissues and root exudates and identification of its autotoxins

作者：Jiang Gui-Ying; Li Yan-Bin; Liu Jian-Guo^*

来源：Allelopathy Journal, 2013, 32(2): 279-287.

• Antioxidant enzyme
• autotoxicity
• cotton
• extracts
• germination
• identification
• phenolic compounds
• root
• root exudates
• seedling growth
• shoot

The autotoxicity potential of cotton shoot extract, root extract and root exudate was evaluated on germination and growth of its own seedlings. The potential phytotoxic substances responsible for this activity were identified. The shoot and root tissue extracts at 20 to 80 mg/mL inhibited all growth parameters, enzyme activities (SOD, POD, MDA) and root activity of cotton seedling. However, the growth of cotton seedling was enhanced at the lowest concentration of 10 mg/mL. Four phenolic acids (p-hydroxybenzoic, ferulic, gallic and vanillic acid) were identified in aqueous extract of plant parts and root exudate by HPLC. The amounts of the 4- phenolic compounds in different cotton plant parts followed the order: shoot extract > root extract > root exudate.

• 出版日期2013-10
• 单位石河子大学