Abstract
Alfalfa seeds of Cimarron VR, CW1446, CW2440, C94-118, C94-785, and WL311 were used as explants. BA, zeatin, and TDZ were evaluated on callus initiation, development, and shoot production. Callus initiation and development toward shoot organogenesis were enhanced when BA was added in the culture medium. Calli produced from BA treatments were compact, solid, and dark green. Similar results were obtained when zeatin was added in the culture medium. However, no shoots were produced from such calli. Multiple shoots were produced directly from each individual explant when TDZ was added to culture medium. However, when higher concentration of TDZ was used, number of shoots per explant was decreased, and dwarf shoots were produced. No apparent difference on shoot production was observed among the cultivars tested so far. Data on number of shoots per explant from two of these cultivars need to be statistically analyzed.
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