Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (1): 123-129.DOI: 10.3969/j.issn.1000-2561.2019.01.018

• Crop Pests, Diseases and Their Control, Environmental Protection • Previous Articles     Next Articles

Allelopathy of Water Extracts from Cassava Organs and Decomposing Products to Rigidoporus lignosus of Hevea brasiliensis

YAN Wenjing,LIU Zifan(),ZHANG Tingting,SU Jianmin,ZHAO Xuemei   

  1. Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
  • Received:2018-06-12 Revised:2018-09-03 Online:2019-01-15 Published:2019-01-15
  • Contact: LIU Zifan


The allelopathic effect of water extracts from the root, stem or leaf of cassava and the decomposing products on the Rigidoporus lignosus (Klotzsch) Imaz. of rubber tree at three concentrations and different days after treatment were studied using the mycelial growth rate method. The water extracts from the root of cassava could significantly promote the growth of Rigidoporus lignosus (Klotzsch) Imaz. between the 2-5th day after treatment, but there was no significant difference among the three concentrations. The promotion effect of the three concentrations extracts from the leaf was significant at the 2th or 5th day after treatment, while the promotion effect to the 10 mg/mL and 100 mg/mL extracts was significant at the 3th day or 4th day. The allelopathic promotion effect of the extracts from the stem was not obvious at the 2th or 3th day, while there was a significantly positive effect of the 100 mg/mL extracts at the 4th and of 1000 mg/mL extracts at the 5th day. The allelopathic inhibition effect of the extracts from the root decomposing product increased gradually with the concentration increased. The effect was significant when the concentration increased to 200 mg/mL. With the concentration increased, the inhibition effect of the extracts from the leaf decomposing product decreased gradually. The effect was no significant when the concentration increased to 200 mg/mL. The inhibition effect of the extracts from the stem decomposing product was significant.

Key words: cassava organ, decomposing product, water extracts, Rigidoporus lignosus (Klotzsch) Imaz. of Hevea brasiliensis, allelopathic effect