ROOT-ROT DISEASE OF GRAPEVINE IN EGYPT

Document Type : Original Article

Author

Plant Pathology Dept., National Research Centre, Dokki, Giza, Egypt.

Abstract

Fusarium oxysporum. Schlecht. Fusarium solani (Mart) Sacc., Rbizocuuu«
so/am K(lhn and Macrophomina p/laseolina ( Tassi) Goid isolated from grapevine
plants grown in Beheira. Gharbia and Giza Governorates exhibited wilt and root-rot
symptoms. Fusarium spp. were the most common isolated fungi (55.8 "/0) followed by
M.phaseolina (26.9%) and R .. so/ani (17.3%). F.oxysporvm was highly pathoqeruc
fungus showing root- rot and disease severity of gapevlne Cv. Thompson followed by
R.solani and M.phaseolina. The isolated F.oxysporum and R.so/ani were non-
pathogenic. Isolation trails from the rhizosphere yielded 17 isolates of bacteria. fungi
and actinomycetes . Tncboderme harzianum (No.8), Pencillium so. (No.4), Bacillus
subti/is
(No. 12) and Pseudomonas fluorescens (No. 10) showed their antagonistic
eHect against the isolated pathogenic fungi

Keywords