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A single sex‐linked dominant gene does not fully explain the codling moth's resistance to granulovirus
Author(s) -
Berling Marie,
Sauphanor Benoît,
Bonhomme Antoine,
Siegwart Myriam,
LopezFerber Miguel
Publication year - 2013
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.3493
Subject(s) - biology , codling moth , mendelian inheritance , genetics , population , major gene , strain (injury) , introgression , gene , pest analysis , locus (genetics) , lepidoptera genitalia , botany , demography , anatomy , sociology
Abstract Background In 2004, resistance to a commercial formulation of the Cydia pomonella granulovirus ( CpGV ) was identified in a field population of Cydia pomonella from an organic orchard in southern France. The genetic inheritance of this resistance was analysed in the resistant laboratory strain RGV . This strain was obtained using successive crosses between the resistant field population and a susceptible laboratory strain, SV , with selection for CpGV resistance at each generation . Results After eight generations of introgression of the resistant trait into SV , the RGV ‐8 strain exhibited 7000‐fold higher resistance than SV . Mass‐crossing experiments showed that resistance to CpGV is strongly dominant, sex dependent and under the control of a single major gene. However, the contribution of other genes is required to explain all of the data obtained in this study. These additional genes do not follow the laws of classical Mendelian transmission . Conclusion Transmission of granulovirus resistance in the RGV ‐8 strain of C. pomonella cannot be fully explained by the effect of a locus located on the Z chromosome. The action of other factors needs to be considered. © 2013 Society of Chemical Industry