title: Water-Deficit Tolerance and Field Performance of Transgenic Alfalfa Overexpressing Superoxide Dismutase.
abstract: Transgenic alfalfa (Medicago sativa) expressing Mn-superoxide dismutase cDNA tended to have reduced injury from water-deficit stress as determined by chlorophyll fluorescence, electrolyte leakage, and regrowth from crowns. A 3-year field trial indicated that yield and survival of transgenic plants were significantly improved, supporting the hypothesis that tolerance of oxidative stress is important in adaptation to field environments.
authors.affiliation: Department of Crop Science, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
authors.forename: B. D.
authors.initials: BD
authors.lastname: McKersie
authors.forename: S. R.
authors.initials: SR
authors.lastname: Bowley
authors.forename: E.
authors.initials: E
authors.lastname: Harjanto
authors.forename: O.
authors.initials: O
authors.lastname: Leprince