Development of B-Genome Chromosome Addition Lines of B. napus Using Different Interspecific Brassica Hybrids |
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| Authors: | D Struss U Bellin G Röbbelen |
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| Institution: | Dr. D. Struss;, Prof. Dr. G. Röbbelen, Institut für Pflanzenbau und Pflanzenzüchtung, Georg-August Universität, Von Sieboldstr. 8, D-3400 Göttingen (Germany) Dr. U. Bellin;, c/o Deutsche Botschaft, Freetown, Sierra Leone, Postfach 1500, D-5300 Bonn (Germany). |
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| Abstract: | By interspecific hybridization within the genus Brassica, trigenomic haploids were produced and back-crossed four times with B. napus, variety ‘Andor’. From this material, monosomic B-genome chromosome addition lines were selected with the extra chromosome derived from three different B-genome sources, i.e., B. nigra (BB), B. carinata (BBCC), and B. juncea (AABB). After selfing and/or microspore culture, disomic addition lines were obtained. Meiotic behavior was studied of the trigenomic hybrids, the pentaploid BC1 plants, and the monosomic addition lines. The addition lines were shown to possess cytological stability and good fertility. |
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| Keywords: | Brassica species interspecific hybridization trigenomic hybrids B-genome addition lines meiotic analysis transmission rate |
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