A synthetic alloploid (2n=38) obtained from Brassica juncea (L.) Czern. x Brassica carinata Braun

• Authors: M. Mackowiak
• Languages of publication: EN

Abstracts

EN

Two yellow-seeded forms, Brasica juncea (AABB, 2n=36) and B.crinata (BBCC, 2n=34), were crossed to obtain Brassica napus form with a yellow seed coat.A 38-chromosome alloploid was identified in the F2 generation.It was expcted that obtained hybrid with the genome composition AACC (B.juncea x B.carfinata; FG2) will be characterized by yellow seeds.The unexpected results - a dark colour of seeds of the synthetic form 2n=38 may suggest different expression of genes in their new environment.Since the presented crossing involved relatively distant forms, meiosis was not so regular as in other synthetic hybrids of B.napus derived from crossing B.campestris to B.oleracea.The absence of chromosome and chromatid bridges indicates the lack of abnormlities in the chromosome structure.Viability of pollen grains of the alloploid amounting to 64% was very similar to that of other synthetic forms of B.napus

Keywords

EN

BRASSICA NAPUS; MEIOSIS; RAPESEED RESYNTHESIS

Discipline

• GENETICS: GENETICS

• Publisher: Institute of Plant Genetics, Polish Academy of Sciences
• Journal: Genetica Polonica
• Year: 1994
• Volume: 35
• Issue: 4
• Pages: 315-321

Contributors

author

M. Mackowiak

• Document Type: article
• Publication order reference: M.Mackowiak