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The role of awns in the resistance of cereals to the grain aphid, Sitobion avenae
Author(s) -
ACREMAN T. M.,
DIXON A. F. G.
Publication year - 1986
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.1744-7348.1986.tb05329.x
Subject(s) - sitobion avenae , biology , homoptera , agronomy , aphid , grain yield , population , poaceae , aphididae , pest analysis , horticulture , demography , sociology
SUMMARY Six genotypes of awned spring wheat were more resistant to Sitobion avenae than de‐awned wheat. Aphids that fed on awns were up to 22% less fecund and were more likely to be dislodged than aphids that fed elsewhere on an ear. These two factors reduced aphid population growth on awned earing plants in the field to a third of that observed on awnless plants. As awns may also benefit yield and are easy to select for it is recommended that awned winter wheats could be bred and used to reduce the incidence of outbreaks of S. avenae.