1994•MycoscienceRequires access

Virulence of Pythium spp. isolated from pond water

Hani M. A. Abdelzaher, Takio Ichitani, Mohamed A. Elnaghy

Abstract

Pre-emergence damping-off tests indicate that Pythium spp. from pond water can be divided into two categories: avirulent Pythium (P. diclinum, P. marsipium, P. middletonii, P. monospermum, P. pleroticum, P. undulatum) and weakly virulent Pythium (P. catenulatum, P. coloratum, P. dissotocum, P. papillatum, Pythium “group F’, Pythium “group HS’. Pythium “group P’, Pythium ’group T’). Post-emergence damping-off tests indicate that the pythia tested can also be divided into three categories: avirulent Pythium (P. catenulatum, P. dissotocum, P. marsipium, P. monospermum, P. papillatum, P. pleroticum, P. undulatum, Pythium “group F’, Pythium “group T’). weakly virulent Pythium (P. coloratum, P. diclinum, P. middletonii, Pythium “group P’ and moderately virulent Pythium (Pythium “group HS’).

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Available abstract

Key concepts: Pythium, Biology, Virulence, Botany, Gene, Biochemistry