Exploitation of allelopathic potential of Chenopodium species to control charcoal rot pathogen of sunflower

Amin, M. . Inst. of Mycology and Plant Pathology; Javaid, A. . Inst. of Mycology and Plant Pathology

Exploitation of allelopathic potential of Chenopodium species to control charcoal rot pathogen of sunflower

2007

Amin, M. (Punjab Univ., Quaid-e-Azam Campus, Lahore (Pakistan). Inst. of Mycology and Plant Pathology) | Javaid, A. (Punjab Univ., Quaid-e-Azam Campus, Lahore (Pakistan). Inst. of Mycology and Plant Pathology)

In vitro antifungal activity of aqueous leaf, stem, root and inflorescence extracts of three Chenopodium spp. viz., C. album L., C. murale L. and C. ambrosioides L. was evaluated against Macrophomina phaseolina (Tassi) G. Goid., the cause of charcoal rot of sunflower (Helianthus annuus L.). Aqueous extracts of all parts of the three test Chenopodium species invariably and significantly reduced the biomass of target fungal species. There was 34-90%, 40-94% and 52-85% reduction in fungal biomass due to different aqueous extracts of C. album, C. murale and C. ambrosioides, respectively. Highest antifungal activity was exhib-ited by 4% root extract of C. murale followed by 4% root extract of C. album resulting in 94% and 90% suppression in test fungal species biomass, respectively.

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