caa a22 4500 445323493 CHVBK 20180317142712.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10681-010-0253-5 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0253-5 Exploitation of the late flowering species Brassica oleracea L. for the improvement of earliness in B. napus L.: an untraditional approach [Elektronische Daten] [M. Rahman, Rick Bennett, Rong-Cai Yang, Berisso Kebede, Mohan Thiagarajah] The oilseed Brassica rapa flowers and matures earlier than B. oleracea, as well as their amphidiploid B. napus. Therefore, earliness of B. rapa has been investigated as a source of variation for earliness in B. napus breeding programs. Variation for days to flower exists in B. oleracea; however, its earliest flowering variant B. alboglabra flowers 2-3weeks later than B. napus. We hypothesized that the C genome of B. alboglabra carries alleles for early flowering which are different from the C-genome alleles of B. napus; and these alleles can be used for the improvement of B. napus. To test this, we examined flowering time in pedigree and DH populations from two B. napus×B. alboglabra crosses. A B. napus line with about a week earlier flowering than the B. napus parent was achieved through reconstitution of its C genome following pedigree selection. Introgression of the B. alboglabra allele in the early flowering pedigree lines is also evident from the presence of B. alboglabra-specific SSR alleles in this line. However, application of doubled haploidy failed to generate any line that flowered earlier than the B. napus parent, which is probably due to the difficulty of obtaining large numbers of euploid B. napus DH lines from this interspecific cross. Thus, we demonstrate that a trait of the diploid species, which apparently looks undesirable, might in fact be highly valuable for the improvement of amphidiploids; and knowledge from this research can also be applied for other traits. Springer Science+Business Media B.V., 2010 Brassica napus nationallicence Brassica oleracea nationallicence Earliness of flowering nationallicence Interspecific hybridization nationallicence Pedigree breeding nationallicence Doubled haploid nationallicence Rahman M. Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Bennett Rick Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Yang Rong-Cai Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Kebede Berisso Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Thiagarajah Mohan Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut Euphytica Springer Netherlands 177/3(2011-02-01), 365-374 0014-2336 177:3<365 2011 177 10681 https://doi.org/10.1007/s10681-010-0253-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0253-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rahman M. Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Bennett Rick Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Yang Rong-Cai Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Kebede Berisso Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Thiagarajah Mohan Department of Agricultural, Food and Nutritional Science, University of Alberta, T6G 2P5, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/3(2011-02-01), 365-374 0014-2336 177:3<365 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer