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Temporary partial breakdown of Mlo‐resistance in spring barley by the sudden relief of soil water stress
Author(s) -
NEWTON A. C.,
YOUNG I. M.
Publication year - 1996
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.1365-3059.1996.tb02908.x
Subject(s) - biology , resistance (ecology) , nutrient , erysiphe graminis , cultivar , mildew , agronomy , spring (device) , water stress , botany , horticulture , poaceae , hordeum vulgare , ecology , mechanical engineering , engineering
Seedlings of spring barley cultivars expressing mlo genes for resistance to mildew (Erysiphe graminis f.sp. hordei) in different genetic backgrounds were subjected to degrees of water stress under different nutrient and soil conditions. The temporary breakdown in the host of the expression of Mlo‐resistance, reported occasionally under field conditions, was successfully simulated when stress treatments were relieved. Differences in the degree of temporary breakdown were attributable to nutrient status, soil compaction and genetic background of the mlo gene.