Wheat grain number: Identification of favourable physiological traits in an elite doubled-haploid population
- García, Guillermo Ariel
- Serrago, Roman Augusto
- González, Fernanda Gabriela
- Slafer, Gustavo Ariel
- Reynolds, Matthew P.
- Miralles, Daniel Julio
DOIAbstract
A detailed and accurate phenotyping of mapping populations is an important “bottleneck” for the understanding of the phenotype–genotype relationships. Grain number per unit area (GN), the main wheat yield component, can be analyzed through physiological components as spike dry weight at flowering, determined by crop growth rate and biomass partitioning to spike during stem elongation phase, and fruiting efficiency. The phenotypic variability of these physiological traits responsible for variation in GN and the relationships among them was analyzed in an elite wheat doubled-haploid (DH) population grown in two different environments. Positive transgressive segregation (i.e. DH lines that exceed parental phenotypic values) was observed for al...
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