Potential of Colletotrichum typhae H.C Greene mycoherbicide for bio-control of Southern cattail (Typha domingensis Pers.) plants

• DOI: 10.21475/ajcs.20.14.02.p2170
• Publication Date: 2020-04-11T00:56:01Z
• Authors: Cláudio Belmino Maia; Paulo Alexandre F...; Robert Weingart B...; Luiz Antônio Maffia; O correto é Kedma...; Ilka Márcia Ribei...; Antonia Alice Cos...; Mário Luiz Ribeir...; Aline Priscilla G...; Janaina Marques M...
• Keywords: Leaf wetness; Spore germination

The anthropic interference in aquatic ecosystems favors the disordered colonization of T. domingensis, damaging production hydroelectric power and river traffic. Because this, studies report efficacy fungal mycoherbicides, with control rates reaching as high 90%. Thus, objective this study was to evaluate potential C. typhae a mycoherbicide bio at vitro greenhouse conditions. 107 samples symptomatic domingensis leaves were collected flooded areas rivers Brazil, identification isolation species. concentration inoculum determined incidence severity disease, influence temperature on mycelial growth conidia germination, effect leaf wetness period infection by host range test vitro. colonies higher 25 30 ºC. There no photoperiod germination spores, but highest percentage occurred 20 environmental conditions inoculated dominguensis revealed that 15 ºC 48 hours disease observed, well for same wetness. specificity showed is specifically pathogenic domingensis. This first occurrence pathogen macrophytes species weed.