The histopathological manifestation of interactions
between Puccinia recondita fsp tritici and wheat near isogenic lines possessing Lr9,Lr29 and
Lr27 was comparatively studied with fluorescent microscopy and differential interference
contrast microscopy It was not untill after the first haustorium was initiated that resistance could
be detected The timing and degree of resistance were dependant upon the specific
host-pathogen combination Nearly imm...