Topcross in supersweet corn doubled haploids for the formation of heterotic groups and hybrid selection1

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dc.creatorJuliana Moraes Machado de Oliveira
dc.creatorJoão Otávio Gonçalves dos Santos
dc.creatorMaria Eduarda Alves de Oliveira
dc.creatorLucas Alves Camilo
dc.creatorJosué Maldonado Ferreira
dc.date2025
dc.date.accessioned2026-07-07T04:30:16Z
dc.descriptionDoubled haploid technology is widely used in conventional corn to accelerate the development of inbred lines. This study aimed to estimate the combining ability of supersweet corn doubled haploid lines, identify new tester lines and establish heterotic groups. Two tester lines (LA and LB) were crossed with 28 doubled haploid lines of six supersweet corn populations using the topcross method and evaluated together with five checks for dehusked ear yield, ear diameter, plant height and soluble solids content. The growing seasons and treatments had significant effects on all the investigated traits, as well as season x treatment interaction on ear yield and diameter. The HA1, HB1, HB12, HB13, HB14, HB15, HB19, HB20 and HB22 hybrids exhibited a superior performance, with average yields ranging from 11.95 to 15.39 t ha-1, and were grouped with the commercial check and Test3. The LB and L19 lines showed the best general combining ability estimates for yield. There were significant specific combining ability effects for most variables. The lines obtained from the PD2005 and PD2006 populations were allocated to the same heterotic group as LB, and those from the synthetic populations SD3002 and SD3003 to the same group as LA. The L19 line shows potential of use as a tester for SD3005 lines.
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253081925016
dc.identifierhttps://www.redalyc.org/journal/2530/253081925016/
dc.identifierhttps://www.redalyc.org/journal/2530/253081925016/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253081925016/253081925016.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253081925016/movil
dc.identifier10.1590/1983-40632025v5581702
dc.identifier.urihttp://hdl.handle.net/123456789/463397
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.55
dc.subjectAgrociencias
dc.titleTopcross in supersweet corn doubled haploids for the formation of heterotic groups and hybrid selection1
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás