Effect of gametic disequilibrium on selection in an autotetraploid population

摘要: The effects of a gametic disequilibrium (DSE) in an autotetraploid population on response to selection as measured by the covariance were investigated. theoretical responses calculated for mass [Mass (1)] and half-sib progeny test (HSPT) two-allele (B b), single locus, population. complexity calculations precluded analytical expressions covariances so numerical analysis was used assuming following genetic models: monoplex dominance, partial duplex additive gene action. results indicated DSE could greatly affect selection. For constant allele frequency might double expected with at random mating equilibrium (RME) gametes, but other instances approach zero. all models two breeding methods investigated always increased when BB gamete exceeded p2 (where p is B) decreased less than p2. possible incorporation this information into long term program some ramifications briefly discussed. With HSPT Mass (1) had proportionality 1:2, respectively, model, relationship rarely occurred models. deviations from ratio not large comparison differences between populations RME.