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The transfer of triazine resistance fromBrassica napusL. toB. oleraceaL. I. Production of F1hybrids through embryo rescue

โœ 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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โœฆ 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.


๐Ÿ“œ SIMILAR VOLUMES


The transfer of triazine resistance from
โœ R. Ayotte; P. M. Harney; V. Souza Machado ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Springer ๐ŸŒ English โš– 678 KB

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 from
โœ R. Ayotte; P. M. Harney; V. Souza Machado ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Springer ๐ŸŒ English โš– 357 KB

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