Analise dialética e heterose de populações de milho-pipoca.

• Autor(a) principal: SCAPIM, C. A.
• Data de Publicação: 2002
• Outros Autores: PACHECO, C. A. P., TONET, A., BRACCINI, A. de L. E., PINTO, R. J. B.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/489130
• topic: combining-ability; crop-yield; cultivars-; diallel-analysis; heritability-; heterosis-; maize-; popcorn-; popping-quality

A diallel set of crosses among nine popcorn (Zea mays) cultivars, UNB-2, RS-20, UEM-J1, UEM-M2, CMS 42, CMS 43, Vicosa, Beija-flor and advanced generation of hybrid three-way Zelia, and their hybrid combinations was carried out to obtain heritability and heterosis estimates. The cultivars and F1s were evaluated in two crop years (1998/99 and 1999/2000) with three replications each year in Iguatemi, State of Parana, Brazil. The results allowed the synthesis of composts based on cultivars of high combining ability for yield such as UNB-2 and CMS-42 and the cultivars Zelia, RS-20 and UEM-M2 to popping expansion. The cultivars Beija-flor and RS-20 were recommend to be used in a reciprocal recurrent selection programme. For popping expansion there are positive and negative heterosis, indicating non-unidirectional dominance.. DESCRIPTORS: combining-ability; crop-yield; cultivars-; diallel-analysis; heritability-; heterosis-; maize-; popcorn-; popping-quality