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, 11 (5-6), 234-7

In Vitro Culture of Isolated Microspores and Regeneration of Plants in Brassica Campestris

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In Vitro Culture of Isolated Microspores and Regeneration of Plants in Brassica Campestris

A M Baillie et al. Plant Cell Rep.

Abstract

A protocol previously developed for B. napus microspore culture was modified to produce embryos from several lines of Brassica campestris. Bud size, genotype, media constituents, and incubation time and temperature were examined. Donor plants were grown in a growth cabinet at a day/night temperature of 10/5°C. Microspores were isolated from buds 2.0 - 2.9 mm in length and cultured in modified Lichter (1982) medium containing 17% sucrose, pH 6.2. After 48 h at 32°C, the incubation medium was replaced with NLN (Lichter 1982) medium containing 10% sucrose. Microspores were cultured at 24°C in darkness and embryos developed after three weeks. More than 1000 plants have thus far been regenerated. Genotypic differences were observed for microspore embryogenesis. The majority of the regenerants were haploid, however colchicine could be effectively used to achieve chromosome doubling.

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