Lisker, N., Dept. Plant Pathol. Microbiol., Hebrew Univ. Jerusalem, Fac. Agric., Rehovot, Israel
Katan, J., Dept. Plant Pathol. Microbiol., Hebrew Univ. Jerusalem, Fac. Agric., Rehovot, Israel
Henis, Y., Dept. Plant Pathol. Microbiol., Hebrew Univ. Jerusalem, Fac. Agric., Rehovot, Israel