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- Title
Genome behavior of cultivated Brassica allotetraploids and development of alien additions.
- Authors
SHAO Yu-jiao; DING Meng-si; LI Zai-yun
- Abstract
cultivated Brassica species are widely used to study genetic behavior of progenitor genomes during process of interspecific hybridization and allopolyploidization. This article reviewed advances in cytology and genetics during the formation and evolution of Brassica allotetraploids. Under induction of chromosome elimination in intergeneric crosses with other crucifers, 3 allotetraploids showed the hierarchy of genome stabilities as Brassica carinata > B. juncea > B. napus, while the 3 genomes (A, B and C) presented the hierarchy of B > A> C. B. napus (AACC) tended to lose more chromosomes from C-genome, but the B-genome chromosomes in other two allotetraploids were preferentially maintained. The genetic and epigenetic changes in natural and resynthesized allotetraploids were affected by their cytoplasm types and genome combinations. The alien additions of Brassica species with individual chromosomes from other crucifer were also introduced.
- Subjects
BRASSICA varieties; PLANT genomes; PLANT species; PLANT chromosomes; PLANT hybridization; PLANT development
- Publication
Chinese Journal of Oil Crop Sciences, 2014, Vol 36, Issue 6, p824
- ISSN
1007-9084
- Publication type
Article
- DOI
10.7505/j.issn.1007-9084.2014.06.021