Diallel analysis of popcorn lines and hybrids for baby corn production

• Published in: Crop breeding and applied biotechnology 2015-03, Vol.15 (1), p.33-39
• Main Authors: Camacho, Lucas Rafael de Souza, Scapim, Carlos Alberto, Senhorinho, Henrique José Camargo, Conrado, Thiago Vincenzi
• Format: Article
• Language: English
• Subjects: Agricultural production; AGRONOMY; BIOTECHNOLOGY & APPLIED MICROBIOLOGY; breeding; combining ability; Corn; Hybrids; Zea mays; Zea mays L
• ISSN: 1984-7033; 1518-7853; 1984-7033
• DOI: 10.1590/1984-70332015v15n1n5

The aim of this study was to evaluate the combining ability of popcorn lines and hybrids with favorable traits for baby corn production, using lines extracted from the major genotypes of the Brazilian germplasm. From nine popcorn lines, derived from the genotypes Zélia, CMS 42, CMS 43, UEM M2, Zaeli and IAC 112, 36 single-cross hybrids were obtained without reciprocals. In partial diallel crosses, 25 single-cross hybrids were obtained, derived from crosses of five lines of the Zaeli (group I) with five lines from IAC 112 (group II). We recommend using lines derived from Zaeli and CMS 42 in hybrid breeding programs for higher ear yields. The lines P9.5.1 and P9.5.5 (group I) and P8.3 and P8.5 (group II) can be recommended for recombination within each group and for the formation of two synthetic populations for recurrent selection, in order to increase ear yield. O objetivo deste trabalho foi avaliar as capacidades combinatórias de linhagens e híbridos de milho-pipoca, com características favoráveis à produção de minimilho, utilizando linhagens extraídas dos principais genótipos pertencentes ao germoplasma brasileiro. A partir de nove linhagens de pipoca, extraídas dos genótipos Zélia, CMS 42, CMS 43, UEM M2, Zaeli e IAC 112, foram obtidos 36 híbridos simples, sem recíprocos. No esquema de cruzamentos dialélicos parciais, foram obtidos 25 híbridos simples, originados dos cruzamentos de cinco linhagens derivadas de Zaeli (grupo I) com cinco linhagens extraídas do IAC 112 (grupo II). Recomenda-se utilizar linhagens extraídas de Zaeli e CMS 42 em programas de obtenção de híbridos com rendimentos de espigas superiores. As linhagens P9.5.1 e P9.5.5 (grupo I) e P8.3 e P8.5 (grupo II) podem ser recomendadas para recombinação dentro de cada grupo e formação de duas populações sintéticas para seleção recorrente, visando o aumento no rendimento de espiga.