Abstract
By employing various biotechnological approaches, genetic variability has been induced in wheat, cotton and oil-seed brassica. The callus obtained from anthers, embryos, ovaries, segments of seedlings, and the interspecific hybrid embryo showed a wide range of chromosome numbers, from haploids to highly polyploids and aneuploids. Callus regenerated plants of wheat showed remarkable differences in height, length of the awns, the number and fertility of the spikes and seeds. The interspecific hybrids obtained as a result of the culture of excised embryos and ovaries of Gossypium and Brassica spp. respectively exhibited phenotypic and genotypic differences, and segregation in F2, but had the intermediate chromosome number. The hybrid callus, however, showed a much wider range of chromosome number. The implications of the in vitro induction of genetic variability in crop improvement is discussed.
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Bajaj, Y.P.S., Gill, M.S., Mahapatra, D. (1986). Somaclonal and Gametoclonal Variation in Wheat, Cotton and Brassica. In: Somaclonal Variations and Crop Improvement. Advances in Agricultural Biotechnology, vol 20. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-7733-5_15
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DOI: https://doi.org/10.1007/978-94-015-7733-5_15
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