| Registro completo |
| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Genetic gain prediction of the third recurrent selection cycle in a popcorn population - DOI: 10.4025/actasciagron.v30i5.3174
Genetic gain prediction of the third recurrent selection cycle in a popcorn population - DOI: 10.4025/actasciagron.v30i5.3174
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| Autores: |
Santos, Fabrício Santana; UENF
Amaral Júnior, Antonio Teixeira do; UENF
Freitas Júnior, Silvério de Paiva; UENF
Rangel, Ramon Macedo; UENF
Scapim, Carlos Alberto; UEM
Mora, Freddy; UEM
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| Data: |
2008-12-12
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| Ano: |
2008
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| Palavras-chave: |
5.02.01.03-4 Genética e Melhoramento Florestal Zea mays
Produção de grãos
Melhoramento
Capacidade de expansão Melhoramento Vegetal Zea mays
Popcorn breeding
Genetic gains
Yield
Popping expansion
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| Resumo: |
Although Brazil has reduced its importation of popcorn grain in recent years, the availability of improved varieties is still rare. In order to improve a popcorn population and to estimate the prediction of genetic gains, the third cycle of intrapopulation recurrent selection was carried out. One hundred ninety two half-sib families were obtained from the second cycle of the UNB-2U population and tested in a randomized complete block design with two replications within sets in two locations. The presence of statistical significance for sets for grain yield, poorly husked ear and broken plants proved the efficiency and the necessity for the use of the hierarchical statistical model by sets. Except for the poorly husked ear, there was significance for families within sets for the other evaluated traits, showing that there was sufficient genetic variability for exploitation in future cycles. Although the heritability for popping expansion was higher than for grain yield, the predicted genetic gain for the latter was superior to popping expansion because of the higher magnitude of the genetic standard deviation for grain yield. It is expected that in the fifth recurrent cycle, the first popcorn variety with yellow grains may be released for Rio de Janeiro State.
Although Brazil has reduced its importation of popcorn grain in recent years, the availability of improved varieties is still rare. In order to improve a popcorn population and to estimate the prediction of genetic gains, the third cycle of intrapopulation recurrent selection was carried out. One hundred ninety two half-sib families were obtained from the second cycle of the UNB-2U population and tested in a randomized complete block design with two replications within sets in two locations. The presence of statistical significance for sets for grain yield, poorly husked ear and broken plants proved the efficiency and the necessity for the use of the hierarchical statistical model by sets. Except for the poorly husked ear, there was significance for families within sets for the other evaluated traits, showing that there was sufficient genetic variability for exploitation in future cycles. Although the heritability for popping expansion was higher than for grain yield, the predicted genetic gain for the latter was superior to popping expansion because of the higher magnitude of the genetic standard deviation for grain yield. It is expected that in the fifth recurrent cycle, the first popcorn variety with yellow grains may be released for Rio de Janeiro State.
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| Tipo: |
Método
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3174
10.4025/actasciagron.v30i5.3174
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| Editor: |
Universidade Estadual de Maringá
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; v. 30, n. 5 (2008): Suplemento Especial; 651-655
Acta Scientiarum. Agronomy; v. 30, n. 5 (2008): Suplemento Especial; 651-655
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Agronomy, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARACIÓN DE ORIGINALIDAD Y CESIÓN DE DERECHOS DE AUTOR Declaro que el presente artículo es original, no fue sometido a la publicación en cualquier otro periódico nacional o internacional, sea en parte o en su totalidad. Declaro, aun, que una vez publicado en la revista Acta Scientiarum. Agronomy, editado por la Universidad Estadual de Maringá, éste jamás será sometido por mí o por cualquier uno de los demás coautores a cualquier otro periódico. A través de este instrumento, en mi nombre y en nombre de los demás coautores, por ventura existentes, cedo los derechos de autor del referido artículo a la Universidad Estadual de Maringá y declaro estar informado de que la no observancia de este compromiso someterá al infractor las sanciones y penas previstas en la Ley de Protección de Derechos de Autor (Nº9609, de 19/02/98).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAISDeclaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Agronomy, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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