F, hybrids of triazine resistant Brassica napus and triazine susceptible B . oleracea were morphologically intermediate to the parent species . Of 49 hybrids examined, 44 had 28 chromosomes, two had 37, one had 38 and two had 56 . The 38-chromosome plant was thought to be a matromorph, the others, A
The transfer of triazine resistance fromBrassica napusL. toB. oleraceaL. I. Production of F1hybrids through embryo rescue
โ Scribed by R. Ayotte; P. M. Harney; V. Souza Machado
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 723 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0014-2336
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โฆ Synopsis
Triazine resistant Brassica napus ssp. oleifera and ssp. rapifera were hybridized to cultivars of B. oleracea ssp. italica, ssp. botrytis, ssp. capitata and ssp.jimbriata.
The interspecific embryos did not survive in vivo but could be rescued in vitro using a culture medium developed by MONNIER (1973). The embryos did not grow directly into normal plants but were successfully regenerated using the protocol developed by KELLER (1984). Hybridization efficiency ranged from 0 to 2.64 hybrids per pollination. Interspecific embryo abortion may be related to abnormal endosperm development.
๐ SIMILAR VOLUMES
Atrazine resistant Brassica hapus x B . oleracea F, hybrids were backcrossed to both parental species . The backcrosses to B. napus produced seeds in both directions but results were much better when the F, hybrid was the pollen parent . Backcrosses to B . oleracea failed completely but BC,s were re