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Inheritance of Seed Set in Crosses of Spring Barley and Hordeum bulbosum L.
- Devaux, P., Adamski, P., Surma, M.
- Crop science 1992 v.32 no.1 pp. 269-271
- plant breeding, haploidy, Hordeum bulbosum, Hordeum vulgare, embryo (plant), genetic variation, codominance, genes, genotype, interspecific hybridization, seed set
- Seed set limits use of certain barley (Hordeum vulgare L.) genotypes in H. bulbosum L. doubled-haploid production. This study was conducted to determine the genetic basis of low seed set in the spring barley cultivar Apex crossed with H. bulbosum. Two hundred F₂ plants, all having Apex as one parent and either Havila, Krystal or Roland as the other parent, were crossed with one clone of H. bulbosum. Parameters of haploid production efficiency (seeds/100 florets, embryos/100 seeds, and plants/100 embryos), were measured. Segregation ratios in the three F₂ populations suggest that reduced seed set in Apex is governed by a single codominant gene. Haploid production efficiencies were intermediate between the two parents and were acceptable for applied plant breeding.