Search results

Search:
in the keywords: RAPESEED RESYNTHESIS

Sort By:

Limit search:

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

100%

Mackowiak M.

Genetica Polonica

1994

vol. 35

issue 4

315-321

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

Refine search results

1 Genetica Polonica

1 1994

1 Mackowiak M.

Search results

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