2017
DOI: 10.4025/actasciagron.v39i2.32517
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<b>Genetic parameter estimates and identification of superior white maize populations

Abstract: ABSTRACT. In Brazil, there is a shortage of white maize cultivars and genetic studies for special maize breeding programs. This study aimed to identify populations and promising hybrid white maize for main agronomic traits and grits processing and to estimate the genetic parameters of parents and heterosis. In the 2012/13 growing season, fifteen hybrids were obtained by complete diallel crosses, and six parental and commercial check varieties were evaluated for: female flowering (FF), ear height (EH), grain yi… Show more

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Cited by 4 publications
(4 citation statements)
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References 17 publications
(28 reference statements)
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“…Means of grits and germ of conventional and transgenic corn hybrids in three crop seasons the best results for grits and germ, demonstrating the effect of the evaluated season (Table 3). Rovaris et al (2017), studying promising white corn populations and hybrids, managed to estimate parental genetic parameters for agronomic traits and grain processing targeting the industry. Also, it was possible to observe that the P3 x P6 hybrid stood out for the best grits production performance, corroborating the need to evaluate these characteristics in commercial corn hybrids.…”
Section: Resultsmentioning
confidence: 99%
“…Means of grits and germ of conventional and transgenic corn hybrids in three crop seasons the best results for grits and germ, demonstrating the effect of the evaluated season (Table 3). Rovaris et al (2017), studying promising white corn populations and hybrids, managed to estimate parental genetic parameters for agronomic traits and grain processing targeting the industry. Also, it was possible to observe that the P3 x P6 hybrid stood out for the best grits production performance, corroborating the need to evaluate these characteristics in commercial corn hybrids.…”
Section: Resultsmentioning
confidence: 99%
“…Para a população final de plantas de milho, massa por espiga e produtividade de grãos, constatou-se que houve significância (p<0,01), e para o comprimento e diâmetro da espiga não foi observado diferença significativa, com valores médios de 9,4 e 2,5 cm, respectivamente, sendo considerados muito baixos quando comparados com a literatura, onde as espigas ultrapassam 15 cm de comprimento e 4 cm de diâmetro (FAVARATO et al, 2016;ROVARIS et al, 2017 , também ocorrendo boa emergência e permanência das plantas até o final do ciclo, apesar das baixas precipitações. Trabalhando-se com milho consorciado com Urochloa ruziziensis em diferentes sistemas de consórcio, milho solteiro e consorciado, e populações de milho distintas (20.000, 40.000, 60.000 e 80.000 plantas ha -1 ) na Fazenda Santa Brígida, em Ipameri -GO, em regime de sequeiro, Freitas et al (2013) lograram maior número final de plantas quando comparado com o presente trabalho, fato este, associado ao maior índice pluviométrico registrado durante a condução do experimento.…”
Section: Resultsunclassified
“…Observa-se que os maiores resultados de massa da espiga e de produtividade de grãos de milho foram para os tratamentos T3 e T5, justamente os tratamentos com menor população final de milho e apenas uma semente por cova, fato que contribuiu para reduzir a competição por água e proporcionar melhor desenvolvimento das espigas, apesar dos valores observados serem bem inferiores aos obtidos por outros autores (OLIVEIRA et al, 2016;ROVARIS et al, 2017).…”
Section: Resultsunclassified
“…In many cultures, it was established that cross-breeding between genotypes from distinct gene pools increases the estimates of genetic parameters (genetic variance, heritability and average degree of dominance) compared to crosses conducted within each pool (Rovaris et al 2017). Beans originated from the Americas and were domesticated, which resulted in two major gene pools: the Andean and Mesoamerican.…”
Section: Introductionmentioning
confidence: 99%