Genetic dissimilarity among the physiochemical characteristics of fruit from pepper accessions

Maciel, Gabriel Mascarenhas; Oliveira, Camila Soares de; Melo, Edmar Isaías de; Oliveira, Alisson Henrique Gama de

doi:10.14393/bj-v32n4a2016-33893

Cited by 5 publications

(8 citation statements)

References 8 publications

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“…These results are in accordance with other published papers that accessed genetic divergence in peppers of the genus Capsicum (Baba et al, 2015;Maciel et al, 2016;Sudré et al, 2010). The same accessions were used to detect divergence based on the physiochemical characteristics of fruits (Maciel et al, 2016). Unlike this study, genotypes were clustered in only four groups, evidencing that reproductive traits were more variant in the germplasm.…”

Section: Resultssupporting

confidence: 91%

“…Germplasm Bank from UFU has high variability and qualitative reproductive traits were capable of distinguishing genotypes in several clusters. These results are in accordance with other published papers that accessed genetic divergence in peppers of the genus Capsicum (Baba et al, 2015;Maciel et al, 2016;Sudré et al, 2010). The same accessions were used to detect divergence based on the physiochemical characteristics of fruits (Maciel et al, 2016).…”

Section: Resultssupporting

confidence: 90%

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Genetic Diversity of Brazilian Pepper Based on Qualitative Reproductive Traits

Maciel¹,

Carvalho²,

Oliveira³

et al. 2019

Rev. Cien. Agr.

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In Brazil, pepper cultivation gives producers more marketing opportunities in various segments, either for fresh consumption or industry. Reproductive traits are efficient methods for comparing genetic divergence in pepper, once most differences among accessions could be verified at this stage. This study aimed to evaluate the genetic divergence in the reproductive phase of pepper accessions by multivariate analysis and test the efficiency of different methods. Sixty-five genotypes from the Federal University of UberlândiaCapsicum spp. Germplasm Bank were evaluated 145 days after sowing, and morphological characterization was performed at reproductive phase. Graphical representation of genetic distances was obtained by UPGMA. Tocher optimization method was also used to group accessions. Genotypes were arranged in seventeen different groups by Tocher method. UPGMA dendrogram collaborated with Tocher method, indicating the wide genetic variability of genotypes. Tocher and UPGMA methods were partially in agreement, allowing grouping 44 of the 65 analyzed accessionsequally. Multicategorical traits have the advantage of easy observation and require less time and labor, being ideal for use in gene bank and collections that do not have high human and financial resources. Moreover, these traits are not affected by the environment. Genetic divergence detected in this paper encourages other researchers to perform the characterization of pepper collections as completely as possible, because it becomes possible to generate more reliable information of the variability and genetic divergence among accessions. Our research discloses the reproductive biodiversity of pepper in “Alto Paranaíba” and “TriânguloMineiro” regions and the importance of maintaining these genotypes.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 90%

Genetic Diversity of Brazilian Pepper Based on Qualitative Reproductive Traits

Maciel¹,

Carvalho²,

Oliveira³

et al. 2019

Rev. Cien. Agr.

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“…É amplamente utilizada na forma de condimentos e frutos in natura (Signorini et al, 2013). O cultivo de pimentas está distribuído em todo território brasileiro, o que ressalta a importância em preservar exemplares desta espécie (Maciel et al, 2016;Carvalho et al, 2017). A expansão das fronteiras agrícolas associada ao crescimento dos grandes centros urbanos tem resultado na extinção de muitas espécies do gênero Capsicum, promovendo estreitamento da base genética para o referido gênero (Ribeiro et al, 2008;Maciel et al, 2016;Carvalho et al, 2017), indicando demanda por pesquisas que visem conservar o germoplasma existente desta espécie.…”

Section: Pertencem à Famíliaunclassified

“…A melhor estratégia para conservação de recursos genéticos envolve a criação de Bancos de Germoplasma no qual ocorrem rotineiramente atividades de caracterização morfológica, geográfica e molecular dos acessos (Hill et al, 2013;Maciel et al, 2016;Carvalho et al, 2017). Estas informações são fundamentais para determinar a variabilidade genética entre os acessos e torná-las a posteriori disponíveis aos pesquisadores (Gonçalves et al, 2008;Neitzke et al, 2010;Maciel et al, 2016;Carvalho et al, 2017). Diante deste contexto, torna-se possível reduzir o tempo de execução e melhorar a eficiência de programas de melhoramento genético (Neitzke et al, 2010;Ferrão et al, 2011;Faria et al, 2012, ).…”

Section: Pertencem à Famíliaunclassified

Características de plântulas: dissimilaridade genética entre acessos de pimenta

Oliveira

Peixoto

Momesso

et al. 2019

Ciênc., Tecnol. Ambiente

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“…However, significant genetic gains in new varieties almost always implies the gradual loss of genetic variability, as the selection of superior genotypes is based only on those attributes correlated with high productivity. Therefore, it is important to characterize old genotypes cultivated by traditional producers, to maintain them in collections of germoplasm to avoid genetic erosion, and to use them in novel breeding programs aimed at creating superior genotypes for future use (MACIEL et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity Among Sweet Potato Crops Cultivated by Traditional Farmers

et al. 2018

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The genetic variability within the crop species Ipomoea batatas is broad, hence, in order to support future breeding programs it is of the utmost importance that germplasm banks be created, conserved, and characterized. Therefore, the objective of this work was to rescue and evaluate the genetic divergence in sweet potato accessions collected in traditional communities of Vale do Ribeira Paulista. Sweet potato samples were collected from quilombos, indigenous villages, caiçaras communities, and small farms. The study was conducted between February 2013 and August 2014 in a randomized block design with three replications. Genetic material included 95 collected accessions and two commercial cultivars. Morphological characteristics of the accessions were evaluated and distances in the genetic distance matrix were estimated by means of multi-category variables, the data being subsequently clustered by the Tocher method. Analysis of the relative contribution of each characteristic and phenotypic correlation of descriptors was also performed. Results evidenced wide genetic diversity among the sweet potato accessions collected in Vale do Ribeira, which were not grouped according to the collection point. The descriptors that contributed more than 60% of genetic diversity included: leaf size, general leaf profile, immature leaf color, petiole pigmentation, predominant branch color, branch secondary color, stem length, cortical thickness, predominant periderm color, and periderm color intensity. Correlations between morphological descriptors was observed in 22.26% of the paired traits.

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Genetic dissimilarity among the physiochemical characteristics of fruit from pepper accessions

Cited by 5 publications

References 8 publications

Genetic Diversity of Brazilian Pepper Based on Qualitative Reproductive Traits

Genetic Diversity of Brazilian Pepper Based on Qualitative Reproductive Traits

Características de plântulas: dissimilaridade genética entre acessos de pimenta

Genetic Diversity Among Sweet Potato Crops Cultivated by Traditional Farmers

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