Abstract
Plant regeneration from calli was carried out at two locations using several parental genotypes and environments. Selfed immature diploid (VV) barley (Hordeum vulgare) embryos and immature haploid (V) or hybrid (VB) embryos from crosses between H. vulgare and H. bulbosum were used as explants. 'Golden Promise', 'Emir' and 'CB 7432' were the best cultivars for plant regeneration, and 15°C tended to be more suitable for plant development than higher temperatures. A total of 844 regenerants were obtained, and over 200 fertile progenies were screened agronomically. Apart from the occurrence of polyploidy and albinism, three variants were identified. One showed maternal inheritance for yellow leaf striping while the other two were controlled by single recessive genes. One of these possessed increased resistance to scald (Rhynchosporium secalis) compared with the donor parent cv 'Triumph', and one resembled a chlorina mutant.
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