Outscoring Rates in Oat Species Crosses (Avena sativa L. ✕ A. sterilis L.)1
- R. Shorter,
- P. Gibson and
- K. J. Frey2
Outcrossing percentages were estimated in F3 oat populations from four matings of Avena sativa L. ✕ A. sterilis L. The populations were generated from the original cross and backcross 1 to 5 to the A. sativa parent in each mating. Mean outcrossing averaged across generations ranged from 1.8 to 8.7% for the four matings. Outcrossing values were 2.8, 10.7, 9.1, 4.7, 2.4, and 4.9% in the Bc0, Bc1, Bc2, Bc3, Bc4, and Bc5, respectively.
Calculations showed that outcrossing in oats has a much greater relative effect on retaining heterozygosity in the F5 to F10 generations than it has in F1 to F5.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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