Development of B‐Genome Chromosome Addition Lines ofB. napusUsing Different InterspecificBrassicaHybrids

摘要

AbstractBy interspecific hybridization within the genusBrassica, trigenomic haploids were produced and back‐crossed four times withB. 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), andB. juncea(AABB). After selfing and/or microspore culture, disomic addition lines were obtained. Meiotic behavior was studied of the trigenomic hybrids, the pentaploid BC1plants, and the monosomic addition lines. The addition lines were shown to possess cytological stability and good