Abstract:
:An Aegilops ventricosa Tausch (2n = 28, DvDvNvNv) subtelocentric chromosome added to wheat (Triticum aestivum L.) in a disomic addition line was found to carry the genes for resistance Yr17, Lr37, Sr38, and Cre5 already transferred onto chromosome 2AS of the wheat line VPM1. Previous works demonstrated that this Ae. ventricosa chromosome is translocated with respect to the standard wheat genome. The present investigations showed that this chromosome pre-existed in Ae. ventricosa and contains only chromatin specific to the N genome. Using biochemical markers and suitable cytogenetic materials including the monoisosomic addition line for the translocated long arm (6NvL-2NvS), its structure was defined as being 6NvSdel.6NvL-2NvS. It consists of a segment of the short arm 2Nv, containing the resistance genes, attached to a group 6 chromosome lacking a distal part of its short arm. The 2 re arrangements could already be present in Aegilops uniaristata Vis. (2n = 14, NN), the source of the Nv genome of Ae. ventricosa.
journal_name
Genomejournal_title
Genomeauthors
Tanguy AM,Coriton O,Abélard P,Dedryver F,Jahier Jdoi
10.1139/g05-001subject
Has Abstractpub_date
2005-06-01 00:00:00pages
541-6issue
3eissn
0831-2796issn
1480-3321pii
g05-001journal_volume
48pub_type
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