Abstract
The anthers of three genotypes ofLycopersicon esculentum, viz. cv. HS-101, cv. HS-102 and an F1 hybrid (Montfavet 63-4xHS-101) in different stages of development were cultured in various defined nutritive media. Only anthers containing microspores in the early uninucleate stage were found to respond with the culture medium in the formation of androgenic callus. The DGII medium with 2 mg l−1 NAA and 1 mg 1−1 kinetin was found to be best for callus induction but MS medium supplemented with 2 mg l−1 2,4-D and 0.1 mg 1−1 BAP favoured proliferation and growth of the callus. The androgenic microspores followed the ‘B’ type pathway of androgenesis in the formation of callus.
Induction of tracheids in the callus could be achieved by supplementing the basal medium with NAA and kinetin or 2,4-D and BAP. Initiation of vessel elements and cambium were favoured by addition of NAA and kinetin and that of the phloem in the presence of 2,4-D and BAP in the basal medium, suggesting that the hormonal requirements for production of different elements of the vascular system in androgenic callus are different. Although roots could be induced from the callus, shoot differentiation could not be achieved under cultural conditions.
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Gulshan, Varghese, T.M. & Sharma, D.R. Studies on anther cultures of tomato —Lycopersicon esculentum Mill . Biol Plant 23, 414–420 (1981). https://doi.org/10.1007/BF02880587
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DOI: https://doi.org/10.1007/BF02880587