Analysis of general and specific combining abilities of popcorn populations, including selfed parents

Viana, José Marcelo Soriano; Matta, Frederico de Pina

doi:10.1590/s1415-47572003000400010

Cited by 27 publications

(28 citation statements)

References 9 publications

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“…For popping expansion, the Ŝ ii values were positive and negative in the two growing seasons, which is evidence of the existence of bidirectional dominance on the expression of this trait. Similar results were obtained by Larish and Brewbaker (1999), Scapim et al (2002), Vilarinho et al (2002), and Viana and Matta (2003).…”

Section: Resultssupporting

confidence: 89%

“…Regarding the popping expansion, the mean squares were not significant (at 5% probability), unlike the mean squares of the variety and specific heterosis. This fact confirms the existence of bidirectional dominance on expression, in accordance with Larish and Brewbaker (1999), Scapim et al (2002), Vilarinho et al (2002Vilarinho et al ( , 2003, and Viana and Matta (2003).…”

Section: Resultssupporting

confidence: 87%

“…It was noted that the dominance deviations generally increased grain yield values (Table 1), in accordance with Dofing et al (1991), Larish and Brewbaker (1999), Pereira and Amaral Júnior (2001), Scapim et al (2002), Viana and Matta (2003), Simon et al (2004), Freitas Júnior et al (2006), Rangel et al (2007Rangel et al ( , 2008, and Miranda et al (2008). For popping expansion, the Ŝ ii values were positive and negative in the two growing seasons, which is evidence of the existence of bidirectional dominance on the expression of this trait.…”

Section: Resultssupporting

confidence: 67%

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Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Munhoz

Prioli²,

Amaral³

et al. 2009

Genet. Mol. Res.

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ABSTRACT. Diallel analysis was used to obtain information on combining ability, heterosis, estimates of genetic distances by random amplified polymorphic DNA (RAPD) and on their correlations with heterosis, for the popcorn varieties RS 20, UNB2, CMS 43, CMS 42, Zélia, UEM J1, UEM M2, Beija-Flor, and Viçosa, which were crossed to obtain all possible combinations, without reciprocals. The genitors and the 36 F 1 hybrids were evaluated in field trials in Maringá during two growing seasons in a randomized complete block design with three replications. Based on the results, strategies for further studies were developed, including the construction of composites by joining varieties with high general combining ability for grain yield (UNB2 and CMS 42) with those with high general combining ability for popping expansion (Zélia, RS 20 and UEM M2). Based on the RAPD markers, UEM J1 and Zélia were the most genetically distant and RS 20 and UNB2 were the most similar. The low correlation between heterosis and genetic distances may be explained by the random dispersion of the RAPD markers, which were insufficient for the exploitation of the popcorn genome. We concluded that an association between genetic dissimilarity and heterosis based only on genetic distance is not expected without considering the effect of dominant loci.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 67%

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Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Munhoz

Prioli²,

Amaral³

et al. 2009

Genet. Mol. Res.

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“…Therefore, additive effects were predominant for PE, although several researchers have reported the presence of bi-directional dominance (Andrade et al, 2002;Viana and Matta, 2003;Simon et al, 2004;Freitas Júnior et al, 2006;Scapim et al, 2006;Miranda et al, 2008). The inheritance of bi-directional domi-…”

Section: Discussionmentioning

confidence: 99%

Combining ability of tropical and temperate inbred lines of popcorn

Silva¹,

Amaral²,

Gonçalves³

et al. 2010

Genet. Mol. Res.

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ABSTRACT. In Brazil, using combining ability of popcorn genotypes to achieve superior hybrids has been unsuccessful because the local genotypes are all members of the same heterotic group. To overcome this constraint, 10 lines (P 1 to P 10 ) with different adaptations to tropical or temperate edaphoclimatic environments were used to obtain 45 F 1 hybrids in a complete diallel. These hybrids and three controls were evaluated in two environments in Rio de Janeiro State. Grain yield (GY), popping expansion (PE), plant height (PH), ear height (EH), and days to silking (FL) were evaluated in randomized complete blocks with three replications. Significant differences between genotypes (P ≤ 0.05) were detected for GY, PE and EH. General combining ability was significant for EH, PH, PE, and GY, and specific combining ability was significant only for PE and GY. The most promising inbred lines that improved GY were P 3 and P 4 , unlike P 8 , P 9 and P 10 , which improved PE, and P 2 , which improved both PE and GY. The additive effects were much more important for PE than for GY. The hybrid combinations

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“…Plant breeders generally strive to identify elite parents of germplasm to be combined well and produce productive progenies (Viana & Matta, 2003), maize breeder in Iraq has used sophisticated methodologies to achieve gene pool improvement throughout useful sources of variation for yield potential, heterotic patterns and biotic and abiotic resistance (Badu-Apraku et al, 2013;Yousif, 2001;Yousif et al, 2003). The success of identifying such parents mainly depends on the gene action that controls the trait under improvement (Brown, 1960;Vasal et al, 1993;Wellhausen, 1965).…”

Section: Introductionmentioning

confidence: 99%

Gene Action and Some Genetic Parameters for Grain Yield, Its Components and Growth Traits of Corn in Full Diallel Cross

Salim¹,

Yousif²,

Alzrgani

et al. 2017

jsa

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The objective of this study was to quantify gene action and some genetic parameters for grain yield, its components and other traits of six varietal hybrids and its parents (AM-145 (A), AM-153 (B) and AM-200 (C) obtained from Ministry of Agriculture, Iraq). All hybrids and their parental entries in full diallel cross were tested at Al-Gharraf suburb, 25 Km north of Al-Nasyria City, Iraq during fall 2013 in RCBD with three replications according to Griffing's fixed model, method for grain yield, its components and other agronomic traits. Gene action, general and specific combining abilities and broad and narrow sense heritability were estimated. Results showed significant differences among entries for almost all traits except ears/plant, and kernels weight. In addition to GCA and SCA significant variances, GCA variances were more important than SCA variances for all traits except ears/plant, which resulting the more importance of the additive genetic effects. SCA variances suggesting the importance the effects of non-additive effects for ears/plant which demonstrating entries could produce prolificacy plants. Additive genetic variances reflect its importance for all traits except female flowering and grain yield/plant. In general, the dominance degree average for all traits except grain yield/plant showed the over dominant effect and the narrow sense heritability ranged between 0.44-0.64 for female flowering and grain yield, respectively. Grain yield/plant ranged between 97.54-68.44 g for B x A and C x B, respectively. Cytoplasmic heredity revealed its importance studying for all traits and 2GCA/SCA estimates ranged between 1.86 and 35.9 for ears/plant and female flowering, respectively.

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Analysis of general and specific combining abilities of popcorn populations, including selfed parents

Cited by 27 publications

References 9 publications

Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Combining ability of tropical and temperate inbred lines of popcorn

Gene Action and Some Genetic Parameters for Grain Yield, Its Components and Growth Traits of Corn in Full Diallel Cross

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