Water-Deficit Tolerance and Field Performance of Transgenic Alfalfa Overexpressing Superoxide Dismutase |
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| Authors: | McKersie B D Bowley S R Harjanto E Leprince O |
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| Institution: | Department of Crop Science, University of Guelph, Guelph, Ontario, Canada N1G 2W1. |
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| 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. |
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