Bud regeneration media were supplemented with BAP + NAA, with thidiazuron alone, or with zeatin + ABA, as used with pea (6). Regenerated shoots were grown on the germination medium described above prior to rooting on half-strength hormone-free MS medium (5). Rooted plants were weaned in the greenhouse (6), and kept until they set seed. Experiments were repeated thrice (≥10 replicates per medium per genotype). Results, expressed as the mean regeneration percentage and number of shoots/explant, were statistically analysed with Newman-Keuls test Regenerants were compared with seedlings in terms of phenotype, and they were analysed by flow cytometry (7), with two independent DNA content analyses/sample, compared to leaf controls from seedlings of each genotype.