Evaluation of combining ability in white corn for special use as corn grits

• Main Authors: Lucas Souto Bignotto, Carlos Alberto Scapim, Ronald José Barth Pinto, Lucas Rafael de Souza Camacho, Mauricio Carlos Kuki, Antonio Teixeira do Amaral Júnior
• Format: Article
• Language: English
• Published: Brazilian Society of Plant Breeding 2015-12-01
• Series: Crop Breeding and Applied Biotechnology
• Subjects: Zea mays L.; heterosis; grit production
• Online Access: http://www.sbmp.org.br/cbab/siscbab/uploads/bae8e3df-a8b0-a685.pdf
• ISSN: 1518-7853; 1984-7033

To assess the genetic potential of white corn for corn grits, 28 hybrids resulting from diallel crosses of eight parents, including parents and S1 generations, were evaluated. The combining abilities and levels of heterosis and inbreeding depression were estimated. The parents used were the main white maize hybrids of the Brazilian germplasm. The combinations HT 9332 x HT 392, IAC Nelore x HT 9332, IAC Nelore x HT 932, and IPR 119 x IAC Nelore are promising for reciprocal recurrent selection programs targeting higher grain yield. Hybrid IPR 127 was indicated as a source of industrial lines with favorable traits for dry-rolled corn production. Hybrid IAC Nelore had the lowest estimate of inbreeding depression and was recommended for the breeding of lines and participation in higher-yielding hybrids and composites.