title: Male gametophyte in maize: Influences of the gametophytic genotype.
abstract: Size and variation in pollen samples were investigated in several successively selfed generations. A significant decrease in mean diameter of pollen grains accompanied inbreeding; also decreased variation in pollen size from individual plants was observed. Since loss of developmental homeostasis in the sporophyte could affect variation in the gametophyte, sporophytic characters were observed as a control. The main conclusion reached in this study was that pollen diameter is influenced by the gametophytic genotype.
authors.affiliation: Department of Botany, University of Massachusetts, Amherst, Massachusetts, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Johnson
authors.forename: D L
authors.initials: DL
authors.lastname: Mulcahy
authors.forename: W C
authors.initials: WC
authors.lastname: Galinat