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- Title
Testers in supersweet corn lines.
- Authors
Hideyo Nihei, Thiago; Bengosi Bertagna, Filipe Augusto; Kuki, Maurício Carlos; Scapim, Carlos Alberto; Barth Pinto, Ronald José; Teixeira do Amaral Júnior, Antônio
- Abstract
The purpose of this study was to evaluate the discriminatory capacity of tester lines for tropical corn lines converted to supersweet shrunken (sh2) gene, for the development of hybrids adapted to tropical conditions. Lines were used as female parents in crosses with three testers: open-pollinated mixed variety; supersweet line L4; supersweet commercial hybrid Tropical Plus. Four trials were carried out to evaluate topcrosses in Maringá -- PR e Sabáudia -- PR, Brazil in the main growing season of 2015/16. The following traits were evaluated: total ear weight (TEW, in kg), commercial ear weight (CEW, in kg) and total soluble solids (TSS, in °Brix). The GCA estimates for TEW and CEW were highest for L4. The lines Balu-114 and UEM-25 were selected based on the effects of ĝi for the traits studied and should be used in the establishment of base populations for the breeding of superior lines. The Ŝij value for TEW was highest for cross BALU-182 x Tropical, while for CEW was the highest value for cross BALU-94 x Mista.
- Publication
Ciência Rural, 2020, Vol 50, Issue 3, p1
- ISSN
0103-8478
- Publication type
Article
- DOI
10.1590/0103-8478cr20190447