IICAR   25568
INSTITUTO DE INVESTIGACIONES EN CIENCIAS AGRARIAS DE ROSARIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
QTL detection of pod-related traits in Pea (Pisum sativum L.) (Resumen aceptado)
Autor/es:
GUINDÓN, MARÍA FERNANDA; COINTRY, ENRIQUE; CRAVERO, VANINA; MARTIN, EUGENIA
Lugar:
Troia
Reunión:
Conferencia; Second International Legume Conference; 2016
Institución organizadora:
International Legume Society
Resumen:
Pea is a self-pollinated, diploid (2n=14), annual crop produced worldwide for human consumption and animal feed. Pea breeding has been conducted with the aim of developing high yielding cultivars. QTL detection will provide additional tools to identify desirable alleles early in the breeding process reducing the time of cultivar release. The aim of this work was to detect and validate QTLs related to number (NP), length (LP) and diameter (DP) of pods in pea. A total of 50 SRAP marker combinations and 10 SSR were evaluated in 112 F2 individuals derived from a cross between DDR14 and Explorer commercial lines. The phenotypic traits were measured in the F2 population in 2013 and in their F3 families in 2014 and 2015. The normality of each trait was evaluated using the Shapiro-Wilk´s test. The Mendelian segregation of each polymorphic molecular marker was verified with a χ2-test. Associations among mendelian markers and traits were detected by ANOVA single point analysis. Consistency of the associations found in F2 individuals and F3 families were evaluated to validate the QTLs. All the morphological traits presented normal distributions and 285 molecular markers showed mendelian segregation. The analysis allowed the validation of 11 QTLs: 3 markers associated to NP (5 to 10 % of phenotypic variation explained), 4 markers related to LP (3 to 17 % ) and 6 markers related to pod diameter (4 to 11 %).This work provides interesting information for use in pea breeding programs.