In order to study in an unique genetic system cold and drought stress-related traits, together with malting quality traits, a new barley genetic map based on the 'Nure' (winter and feeding) x 'Tremois' (spring and malting) doubled-haploid population has been developed. Two low temperature tolerance QTLs were mapped on chromosome 5H. A first, distal QTL for low temperature tolerance and vernalization requirement was identified at the VrnH1/FrH1 region. A second proximal QTL of cold tolerance was coincident with two QTLs regulating the accumulation of two different COR (COld Regulated) proteins (COR14b and TMC-Ap3); the peak position of this QTL, named FrH2, is coincident with the genetic locus of the HvCBF4 barley gene, that is in turn the candidate gene underlying this QTL. The ‘Nure’ x ‘Tremois’ population is also being tested for malting quality related traits. For this purpose, two separate replicated yield trials have been set up, the first fall-sown in one location (2001/2002), and the second one for validation in different locations in Italy (2002/2003). Moreover, a multilocational irrigated vs. non-irrigated field trial in Mediterranean Europe, North Africa and West Asia is being carried out in 2004 for mapping QTLs and candidate genes for drought tolerance.
|Data di pubblicazione:||2004|
|Titolo:||QTLs and candidate genes in the ‘Nure’ x ‘Tremois’ mapping population.|
|Autori:||E. FRANCIA; D. BARABASCHI; A. TONDELLI; G. LAIDO'; A. CAFFAGNI; A. APRILE; A. GIANINETTI; AM. STANCA; G. GALIBA; PM. HAYES; N. PECCHIONI|
|Nome del convegno:||9th International Barley Genetics Symposium|
|Luogo del convegno:||Brno, Czech Republic|
|Data del convegno:||20-26 June, 2004|
|Appare nelle tipologie:||Abstract in Rivista|
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