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The experiment was conducted in order to study the regeneration potential of cotyledon explants from some Iranian inbred lines of sunflower ( Helianthus  annuus  L.) and their F 1  hybrids. Cotyledons of 2-day-old seedlings of three cytoplasmic male sterile inbred lines used as female (CMS 24, CMS 31 and CMS 60/52) and five inbred lines used as male (R-81.1, R-92, R-97, R-201 and R-232) and finally their 15 F 1  hybrids were plated on shoot induction medium, Murashige and Skoog (MS) containing 3% sucrose, 0.5% agar-agar and different concentrations of BAP and NAA. Analysis of variance showed significant differences for all organogenesis traits studied among parental genotypes and F 1  hybrids, hormone combination treatments and genotype × hormone combination treatment interaction. Shoot organogenesis was optimized on MS medium with 1 mg l -1  BAP and 1 mg l -1  NAA.

helia

SHOOT ORGANOGENESIS FROM COTYLEDONS OF SUNFLOWER / ORGANOGENESIS DE LA TALLOS COTILEDONES DE GIRASOL / ORGANOGENESE A PARTIR DES COTYLEDONS DE TOURNESOL