Chromosome instability in Hordeum vulgare x H. bulbosum hybrids

Type Article
Original languageEnglish
Pages (from-to)301-307
Issue number4
Publication statusPublished - Dec 1978
View graph of relations
Citation formats


Chromosome number in Hordeum vulgare x H. bulbosum hybrids ranged between the haploid and diploid number but with peaks in frequency occurring at the 14 and 7 chromosome level. This was reflected in a gradual change from hybrid morphology to that of haploid H. vulgare. The rate of chromosome elimination differed significantly between hybrids, while within each hybrid, differences in mean chromosome number were recorded between and within individual tillers. An increase in temperature from 25–30° C caused a significant increase in the rate of elimination of H. bulbosum chromosomes.