Genetics and molecular mapping of the naked grains in hexaploid oat

Oats in healthy gluten-free and regular diets: A perspective

“…Genome-wide association studies recently provided insight in the structure of germplasm and the genetic basis of variation in various traits (Winkler et al, 2016) including beta-glucan content (Asoro et al, 2013), heading date (Klos et al, 2016), frost tolerance (Tumino et al, 2016) and sensitivity to lodging (Tumino et al, 2017). Also the genetic basis behind the naked trait of oat (A. sativa ssp nudisativa) is being elucidated (Ubert et al, 2017). Herrera et al (2016) tested eight oat varieties on 20 locations in Canada for three years, and determined their composition.…”

Variable expressivity and heritability of multiflorous spikelets in oat panicles

“…Assessing eight oat genotypes under varying temperature, Lawes and Boland (1974) identified a high formation of naked grains under high temperature. Ubert et al (2017) also reported the increase of naked grains due to temperature variations. Similar results involving the interaction of genotype and sowing date, as well as the effect of temperature, were also identified in wheat with supernumerary spikelets (Pennell and Halloran, 1984).…”

“…A quantitative trait loci (QTL) mapping for multiflorous spikelet formation in the 'U01B/U006' population showed that the SNP marker GMI_ES17_c5923_221 was strongly associated with the trait (Pellizzaro et al, 2016). This same SNP marker was also associated to a QTL controlling naked grain formation in the 'U01B/U006' population in different years, being located 6.7 cM from the QTL peak (Ubert et al, 2017). Together, these results indicate that multiflorous spikelets and naked grain traits could share a specific gene (Ougham et al, 1996;Simons et al, 1978) and this may explain the phenotypic association between multiflorous spikelet and naked grain formation.…”

“…The rice mutant fickle spikelet1 (fsp1), which shows spikelets with a high number of floral organs, is directly influenced by environmental signals, mainly temperature (Suzuki et al, 2015). Although studies associating temperature and multiflorous spikelet formation are scarce in the literature, temperature effects on naked grains formation have been observed in oats (Lawes and Boland, 1974;Ubert et al, 2017). Assessing eight oat genotypes under varying temperature, Lawes and Boland (1974) identified a high formation of naked grains under high temperature.…”

“…The major gene was associated with the growth pattern definition (determinate or indeterminate), while the modifying genes would interact with the major gene according to the environmental stimuli. In these same populations, a genetic analysis indicated the action of a major gene termed as N1 and modifying genes controlling the formation of naked grains (Ubert et al, 2017). A quantitative trait loci (QTL) mapping for multiflorous spikelet formation in the 'U01B/U006' population showed that the SNP marker GMI_ES17_c5923_221 was strongly associated with the trait (Pellizzaro et al, 2016).…”