Selection of high heterozygosity popcorn varieties in Brazil based on SSR markers

Eloi, I. B. O.; Mangolin, Claudete Aparecida; Scapim, Carlos Alberto; Gonçalves, Carla; Machado, M. F. P. S.

doi:10.4238/2012.july.19.5

Cited by 7 publications

(6 citation statements)

References 28 publications

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“…This result is in accordance with the observations made by Eloi et al (2012). In the literature, a deficit of heterozygotes was often encountered in maize (Yao et al, 2007;Pineda-Hidalgo et al, 2013.).…”

Section: Discussionsupporting

confidence: 82%

Genetic diversity and population structure of maize landraces from Cte dIvoire

Annicet¹,

Akanvou²,

Desire³

et al. 2016

Afr. J. Biotechnol.

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Maize (Zea mays L.) occupies an important place among food crops in Côte d'Ivoire. However, no study on the genetic diversity of the species has been performed to date. This study aims at analyzing the diversity and genetic structure of 35 maize accessions using 10 microsatellite markers. These accessions are from different agro-ecological zones representative of the Ivorian territory. The results showed that for all accessions studied, 47 alleles were detected, with an average of 6.71 ± 2.21 alleles per locus. The percentage of polymorphic loci and total genetic diversity, were 91.34% and 0.524 ± 0.159. A slight excess of heterozygotes was observed in the accessions (4.6%). The molecular analysis of variance showed that the total genetic diversity is mainly due to the intra-accession diversity (85.17%). The inter-accession diversity rate was estimated at 14.87%, which is in favor of moderate differentiation between the accessions. The Bayesian analysis grouped the accessions into two populations, regardless of geographical origin. These results provide basic information potentially useful in selection. The cross between two individuals from different groups might help exploit the phenomenon of heterosis.

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Section: Discussionsupporting

confidence: 82%

Genetic diversity and population structure of maize landraces from Cte dIvoire

Annicet¹,

Akanvou²,

Desire³

et al. 2016

Afr. J. Biotechnol.

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“…The Fst values indicated that Ferreira et al 89.7% of the total variation in the locus allele frequency was due to genetic differences among the lines under study (Eloi et al 2012). The genetic diversity found in this study was similar to that reported by Eloi et al (2012) and Sserumaga et al (2014). Forty percent of the loci had high PIC values (>0.6), indicating a great potential to detect differences among pure lines, confirming previous studies (Sserumaga et al 2014).…”

Section: Genetic Diversity Of Markerssupporting

confidence: 88%

SSR-based genetic analysis of sweet corn inbred lines using artificial neural networks

Ferreira

Scapim

Maldonado

et al. 2018

Crop Breed. Appl. Biotechnol.

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“…One of the ways to estimate genetic variability in a population is to analyze the different alleles at the various gene loci with the use of molecular markers (Solomon et al, 2010). The average number of alleles obtained per locus in the present study (2.13) (Table 1) was lower than those in other studies for common corn and popcorn (Dandolini et al, 2008;Eloi, Mangolin, Scapim, Gonçalves, & Machado, 2012;Franzoni, Scapim, Beviláqua, Pacheco, & Mangolin, 2012;Trindade et al, 2010) perhaps due to the type of EST-SSR marker used, as the markers represent expressed regions of origin of common corn and not specifically for popcorn. Also, the process of repeating selection cycles in the popcorn crop prioritizes the selection of specific traits, such as grain yield and popping expansion (Franzoni et al, 2012).…”

Section: Discussioncontrasting

confidence: 71%

<b>Population structure and impact of recurrent selection on popcorn using EST-SSR markers

et al. 2018

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The success of any recurrent selection program depends on the genetic variability of the evaluated population, which is used to refer to the diversity of existing alleles at many genetic loci. Thus, the goal of the present study was to investigate the impact of recurrent selection across nine cycles of a UENF-14 popcorn population through the analysis of genetic diversity and structure using microsatellite markers (EST-SSRs). Genomic DNA was extracted from young leaves of 25 individuals from each cycle (C0, C1 C2, C3, C4, C5, C6, C7, and C8), totaling 225 samples from the UENF-14 population. Fifty EST-SSR markers were used for the analysis of genetic diversity across the recurrent selection cycles, 16 of which were polymorphic. Thirty-four alleles were detected, with an average of 2.13 alleles per locus. Throughout all the recurrent selection cycles, there was a reduction in heterozygosity and an increase in inbreeding. The population structure showed a sharing of alleles, inferring that some may be directly related to the main selection characteristics.

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Selection of high heterozygosity popcorn varieties in Brazil based on SSR markers

Cited by 7 publications

References 28 publications

Genetic diversity and population structure of maize landraces from Cte dIvoire

Genetic diversity and population structure of maize landraces from Cte dIvoire

SSR-based genetic analysis of sweet corn inbred lines using artificial neural networks

<b>Population structure and impact of recurrent selection on popcorn using EST-SSR markers

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