Análise dialélica e depressão endogâmica de híbridos forrageiros de milho para características agronômicas e de qualidade bromatológica

Neto, Israel Leite de Souza; Pinto, Ronald José Barth; Scapim, Carlos Alberto; Jobim, Clóves Cabreira; Figueiredo, Alex Sandro Torre; Bignotto, Lucas Souto

doi:10.1590/1678-4499.0315

Cited by 11 publications

(13 citation statements)

References 13 publications

(17 reference statements)

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“…This result was predictable given the importance of the non-additive genetic effects that control the inheritance of polygenic traits as well as the role of genic complementation in the heterotic expression observed in simple hybrids. The ID results obtained in the present study are consistent with the variation in ID in other studies of grain yield (BERNINI et al, 2013;SENHORINHO et al, 2015) and silage (SOUZA NETO et al, 2015).…”

Section: Resultssupporting

confidence: 93%

“…Several authors support the efficacy of the expected pure inbred lines methodology, as well as inbreeding depression, in predicting the breeding potential of segregating populations based on maize forage quality, grain yield and popcorn quality (SCAPIM et al 2006;ARNHOLD et al, 2010;BERNINI et al, 2013;SOUZA NETO et al, 2015). However, there is no literature related to the deleterious effects of inbreeding depression on green corn production and quality characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Inbreeding depression and average genetic components in green corn genotypes

et al. 2017

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This study aimed to evaluate the inbreeding depression and average genetic components in seven hybrids and two open pollinated cultivars for green corn production, as well as to select the best genotypes in order to obtain base populations for inbred lines extraction. The experiment was carried out in a randomized complete block design with four replications, in a split plot design, with inbreeding levels arranged in the plots and the different genotypes distributed over the subplots, in the municipality of Sabáudia - PR, during the 2014/15 crop season. Higher values of dominance and inbreeding depression were observed for yield of both unhusked and commercial ears. Higher additive effects were detected on length and diameter of commercial ears. The genotypes AM811, Cativerde 02 and AG4051 showed greater probability of obtaining highly productive and higher quality green corn inbred lines.

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Inbreeding depression and average genetic components in green corn genotypes

et al. 2017

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“…GY was assessed by measurement of the grain mass produced in each plot after discarding the cob and is expressed in kg•ha −1 . In order to adapt the measurement of the yield, it was carried out the stand correction method, by analysis of covariance between the number of plants per plot and GY, according to the covariance of ideal stand methodology, proposed by Vencovsky and Barriga (1992). PE was determined by means of a seed sample, taken from the basal center of the ears (Granate et al 2002) in each plot.…”

Section: Methodsmentioning

confidence: 99%

“…In this context, diallel analysis is considered an important statistical tool for estimating parameters useful in selecting parents (Seifert et al 2006;Barreto et al 2012;Souza Neto et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Comparison of testers in the selection of S3 families obtained from the UENF-14 variety of popcorn

et al. 2016

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“…Ferreira et al (2008) found prevalence of non-additive effects for the character ear height in a partial diallel involving 24 single hybrids of maize. Souza Neto et al (2015) reported the existence of non-additive effects in assessing the diallel analysis of maize forage hybrids for agronomic and nutritive characteristics of maize.…”

Section: Resultsmentioning

confidence: 99%

Partial diallel analysis between maize inbred lines

Baretta¹,

Nardino²,

Konflanz³

et al. 2015

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Diallels in maize provide the knowledge of genetic parameters of lines and heterotic groups used. In this study, the general combining ability and specific combining ability, GCA and SCA respectively, were estimated in a partial diallel cross between maize inbred lines in five crop environments. In the 2011/2012 crop, some important agronomic characteristics were evaluated in five environments of southern Brazil. The difference of hybrids and environments was significant for all characters, however, the hybrid x environment interaction was significant only for plant height (PH) and grain yield (GY). GCA effects for the two heterotic groups and SCA effects were significant for all characters when hybrids were evaluated by the average of environments. Only for PH and GY the SCA x environment interaction was significant. The heterotic group I (female), arising from commercial single hybrids with high grain yield, showed interaction only between GCA x environment for PH, indicating predominance of additivity for the other characters in these lines, which do not vary according to different environment conditions. In most cases, hybrids with the best SCA values are not obtained from lines with the best GCA values.Additional keywords: general and specific ability; genetic effect; Zea mays L. ResumoDialelos em milho propiciam conhecer parâmetros genéticos das linhagens e grupos heteróticos utilizados. Neste trabalho, foram estimadas a capacidade geral de combinação e a específica de combinação, CGC e CEC, respectivamente, num cruzamento dialélico parcial entre linhagens endogâmicas de milho em cinco ambientes de cultivo. Na safra de 2011/2012, foram avaliados alguns caracteres de importância agronômica em cinco ambientes do Sul do Brasil. A diferença dos híbridos e ambientes foi significativa para todos os caracteres; entretanto, a interação híbrido x ambiente foi significativa somente para altura de planta (AP) e rendimento de grãos (RG). Os efeitos da CGC para os dois grupos heteróticos e de CEC foram significativos para todos os caracteres quando os híbridos foram avaliados pela média dos ambientes. Somente para AP e RG a interação de CEC x ambiente foi significativa. O grupo heterótico I (fêmeas), oriundo de híbridos simples comerciais com alto rendimento de grãos, apresentou somente interação entre CGC x ambiente para AP, indicando predominância de aditividade para os demais caracteres nestas linhagens, que não sofrem variações em função das diferentes condições do ambiente. Na maioria dos casos, os híbridos com melhores valores de CECs não são resultantes de linhagens com os melhores valores de CGCs.Palavras-chave adicionais: capacidade geral e específica; efeito gênico; Zea mays L.

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Análise dialélica e depressão endogâmica de híbridos forrageiros de milho para características agronômicas e de qualidade bromatológica

Cited by 11 publications

References 13 publications

Inbreeding depression and average genetic components in green corn genotypes

Inbreeding depression and average genetic components in green corn genotypes

Comparison of testers in the selection of S3 families obtained from the UENF-14 variety of popcorn

Partial diallel analysis between maize inbred lines

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