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Problems in field selection for resistance to carrot fly ( Psila rosae ) in carrot cv. Long Chantenay
Author(s) -
ELLIS P. R.,
DOWKER B. D.,
FREEMAN G. H.,
HARDMAN J. A.
Publication year - 1985
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.1744-7348.1985.tb03124.x
Subject(s) - biology , daucus carota , pest analysis , horticulture , resistance (ecology) , selection (genetic algorithm) , botany , agronomy , artificial intelligence , computer science
SUMMARY In field trials between 1973 and 1982 families of carrots of cv. Long Chantenay were assessed for their resistance to carrot fly ( Psila rosae ). In some but not all years, families selected for their observed resistance in earlier trials seemed more resistant than the parent line. In more than half the trials there was an association between carrot fly damage and root density, there being less damage on those families from which more roots were harvested. Thus, family selection within cv. Long Chantenay did not lead to a consistent improvement in resistance to carrot fly. Alternative strategies for achieving plant resistance to this pest are discussed.