Abstract
Nuclear and cytoplasmic genes from 10 diverse Avena sterilis L. accessions were introgressed into four Corn Belt oat (A. sativa L.) cultivars. Grain and straw yield, harvest index, heading date, height, unit straw weight, and vegetative growth index were evaluated in the BC2 generation of 76 cytoplasmic isopopulations. Means of all seven traits in the BC2 of ‘Tippecanoe’ matings were greater than Tippecanoe due to introgression of A. sterilis germplasm, whereas means of all seven traits in BC2 populations of ‘Ogle’ were inferior to those of Ogle. BC2 populations of matings involving ‘CI 9170’ and ‘CI 9268’ were variable, with some trait means being greater than those of the recurrent parents and some being lower.
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