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Factors involved in resistance to blight ( Phytophthora infestans (Mont.) de Bary) in potatoes and assessment of resistance using detached leaves
Author(s) -
MALCOLMSON JEAN F.
Publication year - 1969
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1969.tb02895.x
Subject(s) - phytophthora infestans , biology , blight , sporangium , inoculation , spore , horticulture , resistance (ecology) , botany , agronomy
SUMMARY In leaves of potatoes inoculated with Phytophthora infestans early in the growing season, more but smaller lesions with later onset of sporulation and fewer sporangia developed than on those inoculated later. None of these factors was uniform on detached leaves of all clones, so could not be used separately to forecast field resistance satisfactorily; when considered together, a reasonable prediction was feasible. With some clones, tests of detached leaflets gave a better indication of behaviour in the field than laboratory tests of whole plants.