title: Within-family selection in Avena fatua and A. barbata.
abstract: Twenty families each of Avena fatua and A. barbata drawn from a natural population were used for measuring the response to within-family selection for the two extremes in heading date and seed size. The estimates of the relative amounts of between- and within-family variation were interpreted in relation to the realized responses to show that A. fatua has greater genetic variability than A. barbata which, on the other hand, has more phenotypic plasticity. These results support our model on the alternative adaptive strategies in the two species discussed earlier.
authors.affiliation: Department of Agronomy and Range Science, University of California, Davis, USA.
authors.forename: S K
authors.initials: SK
authors.lastname: Jain
authors.forename: D R
authors.initials: DR
authors.lastname: Marshall