Agronomic performance of super-sweet corn genotypes in the north of Rio de Janeiro

Author:

Santos Pedro Henrique Araújo Diniz1,Pereira Messias Gonzaga1,Trindade Roberto dos Santos2,Cunha Keila Silva da1,Entringer Geovana Cremonini1,Vettorazzi Julio Cesar Fiorio1

Affiliation:

1. Universidade Estadual do Norte Fluminense, Brazil

2. Embrapa Milho e Sorgo, Brazil

Abstract

We investigated the agronomic performance of super-sweet corn genotypes. Super-sweet corn genotypes were backcrossed with regionally adapted field varieties (CIMMYT 8 and Piranão 8). Eight morphological and yield-related traits were evaluated. A significant effect of interaction was observed between the five groups of genotypes (donor parents; super-sweet backcrossed parents; super-sweet intervarietal hybrids; common intervarietal corn hybrids; and field corn populations). Despite the low yield of genotype SH2Piranão, the hybrids resulting from interbreeding of the backcrossed parents for the improvement of super-sweet corn were promising. The agronomic performance of the super-sweet parents and their hybrids indicates the possibility of breeding lines with high genetic value to obtain single-cross hybrids and cultivars of super-sweet corn adapted to the northern region of the State of Rio de Janeiro.

Publisher

FapUNIFESP (SciELO)

Subject

General Medicine

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