01803naa a2200241 a 450000100080000000500110000800800410001910000220006024501160008226000090019852010500020765000150125765000130127265000260128565000250131165000390133670000160137570000190139170000220141070000170143270000200144977300920146911327692022-11-16       2022    bl uuuu     u00u1 u    #d1 aSARAIVA, F. R. S.  aHeterotic groups of onions (Allium cepa L.) for the development of low-pungency hybrids.h[electronic resource]  c2022  aThe growing demand for low-pungency cultivars onion has opened new market niches. The objective of this study was to characterize heterotic onion groups to develop low-pungency hybrid cultivars. A field experiment with a randomized block design and two factors (genotype and fertilization) arranged in split plots was carried out in Ituporanga-SC (Brazil), in 2019. The plots corresponded to two fertilization levels (with and without sulfur), and the subplots corresponded to 26 onion genotypes, where the germplasm was derived from different (male-sterile-LA and maintainer-LB) lines, advanced populations and cultivars. The bulbs were evaluated for the following traits: pyruvic acid (indicator of pungency), sulfur content and bulb yield. The genotype performance differed according to the fertilization level. In the sulfur-free treatments, four heterotic groups were identified. The genetic variation in the crosses LA11 ?? LB24 and LA15 ?? LB19 could be exploited for negative selection for pungency and positive selection for bulb yield.  abulb yield  aideotype  amultivariate analysis  apyruvic acid content  astandardized canonical coefficient1 aMELO, R. C.1 aCERUTTI, P. H.1 aCOIMBRA, J. L. M.1 aALVES, D. P.1 aGUIDOLIN, A. F.  tREVISTA COLOMBIANA DE CIENCIAS HORT??COLAS, Tunja, Boyac??gv. 16, n. 1, p. 1-10, 2022.