CHARACTERIZATION OF 2 PHYTOPHTHORA SPP ISOLATED FROM KALE AND TYFON

Species identification of two isolates of Phytophthora from roots of K ale (Brassica oleracea L.) and tyfon [Brassica rapa L. x Brassica peki nensis (Lour.) Rupr.] are herein described. Morphological and patholog ical characteristics as well as cardinal temperatures for mycelial gro wth of these isolates were compared to Australian and Great Britain is olates of P. megasperma from Brassica spp., Wyoming isolates of P. meg asperma f. sp. medicaginis from alfalfa (Medicago sativa L.) and P. cr yptogea from sugar beet (Beta vulgaris L.).