Naslov
Settling the potential of Portuguese maize germplasm for association studies

Autori
Leitao, Susana T. ; Alves, Mara Lisa ; Almeida, Nuno Felipe ; Mendes-Moreira, Pedro ; Šatović, Zlatko ; Vaz Patto, Maria Carlota

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXII EUCARPIA Maize and Sorghum Conference - Conference Book / Šimić, Domagoj ; Ledenčan, Tatjana ; Grljušić, Sonja ; Duvnjak, Tomislav - Osijek : Poljoprivredni institut Osijek, 2011, 83-83

ISBN
978-953-97114-8-9

Skup
XXII EUCARPIA Maize and Sorghum Conference

Mjesto i datum
Opatija, Hrvatska, 19.06.2011. - 22.06.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Zea mays; germplasm; bread-making quality; SSRs; genetic diversity

Sažetak
Nowadays European consumers are more concern about the quality of their food and about agrodiversity erosion and unsustainability of agricultural ecosystems. Centuries of maize cultivation in Portugal have originated a very diverse germplasm with particular quality for food production (sourdough 'broa' bread) and with great value for breeding. Traditional Portuguese maize bread, with particular nutritional value, has high potential to become a popular speciality fighting health and sustainability public concerns. A diverse collection of inbred lines derived from traditional Portuguese germplasm has been developed and conserved at the Portuguese Plant Germplasm Bank (BPGV). In order to determine the potential of this collection for an association mapping approach aimed to identify the genetic basic of bread making quality, we studied its genetic diversity and population structure. 150 maize BPGV inbred lines were screened using 50 SSR makers uniformly distributed throughout the genome. A number of genetic diversity parameters was calculated (Na, NO, HE, PIC) for all loci as well as the proportion-of-shared-alleles distance between pairs of lines. All showed the existence of large variability among inbreeds. The Neighbor Joining tree depicted well the pedigree records of inbreds. Presently, linkage disequilibrium and the genetic structure of the collection are being analyzed. This information together with the phenotypic characterization of the lines will be crucial to select the most appropriate group of inbreds for the future association studies reducing the risk of false positives and maximizing the detection of significant marker-trait association.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija), Biotehnologija

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