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Histology of the infection of tritordeum and its parents by cereal brown rusts
Author(s) -
RUBIALES D.,
NIKS R. E.,
DEKENS R. G.,
MARTÍN A.
Publication year - 1993
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1993.tb01474.x
Subject(s) - biology , puccinia recondita , rust (programming language) , seedling , poaceae , host (biology) , botany , genetics , computer science , programming language
The reactions of tritordeum lines and their Hordeum chilense and Triticum spp. parents to infection by Puccinia recondita f.sp. tritici, P. recondita f.sp. agropyri and P. hordei were studied at the seedling stage. The histological observations indicated that tritordeum behaves as the wheat parent, whatever the H. chilense parental line reaction. Tritordeum is to be considered a host of wheat brown rust where genes for hypersensitive resistance may occur; these are apparently contributed by the wheat parent. Both H. chilense and wheat are highly resistant to barley brown rust, and the reaction of tritordeum is that of the wheat parent with respect to the levels of necrosis associated with the early aborted infection units. The tritordeum reaction is also that of the wheat parent to a rust collected on H. jubatum (putatively P. recondita f.sp. agropyri ), with the susceptibility or resistance of H. chilense being overruled by the wheat parent reaction.