Li Jin-Xin, Ye Jun-Wei, Liu Da-Hui
Pharmacy Faculty, Hubei University of Chinese Medicine, Wuhan 430065, China.
Ying Yong Sheng Tai Xue Bao. 2020 Jul;31(7):2219-2226. doi: 10.13287/j.1001-9332.202007.006.
Allelopathic effects of at different growth stages on , , and were examined using six parameters of seed germination and seedling growth, including germination rate, germination speed index, germination index, root length, stem length, and biomass. The results showed that the allelopathic effects of leaf extract were stronger than that of stem extract, with the germination index and biomass of reci-pient plants treated by leaf extract being significantly lower than those treated by stem extract. The allelopathic effect of in the withering stage was stronger than that in the vigorous growth stage. There was a significant dose-effect relationship between the concentrations of leaf extract and the allelopathic effects on three different receptor plants. The higher the extract concentration was, the stronger the allelopathic inhibition was. Leaf extract of could completely inhibit all the germination indices of and at the concentrations of 0.075 and 0.10 g·mL, respectively. The inhibition rates of 0.10 g·mL leaf extract on germination rate, germination speed index, and germination index of were 13.8%, 27.2% and 19.3%, respectively. Leaf extract of could completely inhibit all the growth indices of and at the concentrations of 0.05 and 0.10 g·mL, respectively. However, the inhibition rates of 0.10 g·mL leaf extract on root length, stem length, and biomass of were 64.6%, 92.9% and 21.8%, respectively. In summary, according to the comprehensive allelopathy response index (SE) of seed germination and seedling growth, the susceptibility of the three tested species to the extracts of was (Cruciferae) > (Compositae) > (Gramineae).
利用种子萌发和幼苗生长的六个参数，包括发芽率、发芽速度指数、发芽指数、根长、茎长和生物量，研究了[植物名称]在不同生长阶段对[受体植物1]、[受体植物2]和[受体植物3]的化感效应。结果表明，[植物名称]叶提取物的化感效应强于茎提取物，叶提取物处理的受体植物的发芽指数和生物量显著低于茎提取物处理的受体植物。[植物名称]在枯萎期的化感效应强于旺盛生长期。叶提取物浓度与对三种不同受体植物的化感效应之间存在显著的剂量效应关系。提取物浓度越高，化感抑制作用越强。[植物名称]叶提取物在浓度分别为0.075和0.10 g·mL时，可完全抑制[受体植物1]和[受体植物2]的所有发芽指标。0.10 g·mL叶提取物对[受体植物3]发芽率、发芽速度指数和发芽指数的抑制率分别为13.8%、27.2%和19.3%。[植物名称]叶提取物在浓度分别为0.05和0.10 g·mL时，可完全抑制[受体植物1]和[受体植物2]的所有生长指标。然而，0.10 g·mL叶提取物对[受体植物3]根长、茎长和生物量的抑制率分别为64.6%、92.9%和21.8%。综上所述，根据种子萌发和幼苗生长的综合化感反应指数（SE），三种受试物种对[植物名称]提取物的敏感性为[受体植物1]（十字花科）>[受体植物2]（菊科）>[受体植物3]（禾本科）。
