A WIDE COLLECTION OF WILD EMMER ACCESSIONS TO RECOVER DIVERSITY FOR CULTIVATED WHEATS

RAFFAELLA BATTAGLIA; VIVIANA C. ECHENIQUE; OADY MATNI; ELISABETTA MAZZUCOTELLI; LUIGI CATTIVELLI; DELFINA BARABASCHI; PABLO F. RONCALLO; BRAIN STEFFENSON; CATERINA MARÈ; FRANCESCA DESIDERIO; ANNA MARIA MASTRANGELO; HAKAN OZKAN

Pisa

Congreso; SIBV-SIGA 61° annual Congress "Sustainability of agricultural environment: contributions of plant genetics and physiology"; 2017

SIGA

The wild emmer wheat, Triticum dicoccoides (AABB), is the progenitor of the Domesticated durum wheat (AABB), and fully fertile in cross with it. Wild emmer harbors a wide spectrum of genes and alleles lost during domestication and breeding, nevertheless a number of genes and alleles positively contributing to biotic and abiotic stress tolerance, yield components and quality have been found in wild emmer and introgressed in cultivated wheats. Yellow rust, caused by the fungus Puccinia striiformis (Pst), is one of the most important disease of wheat worldwide. Also in Italy, spring weather conditions of the last years favored a persistent presence. The majority of the known resistance genes are already ineffective against current races of Pst. A wide collection of wild emmer accessions, equipped with genotypic data, has been established to recoveruseful genetic diversity for cultivated wheats. This collection is being exploited for genome wide association (GWAS) for a number of traits, including yellow rust resistance.