Fait partie de [OMA81]

2008 - 481 p.
p. 435-436

Inter- and intragenomic spontaneous translocations in multigeneric hybrids of Triticeae tribe

Carvalho A., Guedes-Pinto H., Lima-Brito J.

Interspecific hybridisation has been used in order to transfer interesting agronomic characteristics from wild species to wheat. This event could induce structural rearrangements such as spontaneous translocations. We performed in situ hybridisation on mitotic and meiotic chromosome spreads of F1 bread wheat × tritordeum hybrids with genomic DNA from Hordeum chilense and the rDNA sequence pTa71, as probes. All PMCs at metaphase I indicated a spontaneous intergenomic translocation wheat/Hch and one wheat univalent with two rDNA loci. This intragenomic translocation (1B/6B) was also present in all mitotic cells of the same plant. The occurrence of wheat/ Hch translocations might be useful for the introgression of H. chilense chromatin in wheat. BN ISBN 2-85352-404-3

Mots-clés    

AMELIORATION GENETIQUE, BLE, CRITERE DE SELECTION, ESPAGNE, EXPERIMENTATION, INTERACTION GENOTYPE ENVIRONNEMENT, METHODE STATISTIQUE, VARIETE

Citer cet article    

Carvalho A., Guedes-Pinto H., Lima-Brito J. Inter- and intragenomic spontaneous translocations in multigeneric hybrids of Triticeae tribe. In : Molina-Cano J.L. (ed.), Christou P. (ed.), Graner A. (ed.), Hammer K. (ed.), Jouve N. (ed.), Keller B. (ed.), Lasa J.M. (ed.), Powell W. (ed.), Royo C. (ed.), Shewry P. (ed.), Stanca A.M. (ed.). Cereal science and technology for feeding ten billion people: genomics era and beyond. Zaragoza : CIHEAM / IRTA, 2008. p. 435-436. (Options Méditerranéennes : Série A. Séminaires Méditerranéens; n. 81). Meeting of the Eucarpia Cereal Section, 2006/11/13-17, Lleida (Spain). http://om.ciheam.org/om/pdf/a81/00800897.pdf