Algoritmo de Gower na estimativa da divergência genética em germoplasma de pimenta

Moura, Maria da Cruz Cl; Gonçalves, Leandro Simões Azeredo; Sudré, Cláudia Pombo; Rodrigues, Rosana; Júnior, Antônio Teixeira do Amaral; Pereira, Telma Ns

doi:10.1590/s0102-05362010000200003

Cited by 28 publications

(26 citation statements)

References 21 publications

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“…pendulum produced by GONÇALVES et al (2011), usi ng a genetic full diallel design without reciprocals, were evaluated. The following accessions were used as parents: UENF 1616, UENF 1624, UENF 1629, UENF 1639 and UENF 1732 from the Germplasm Collection of the Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), characterized by MOURA et al (2010) and evaluated for resistance to pepper yellow mosaic virus by BENTO et al (2009) (Table 1).…”

Section: Methodsmentioning

confidence: 99%

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Gene effect and heterosis in Capsicum baccatum var. pendulum

et al. 2014

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Section: Methodsmentioning

confidence: 99%

“…has played an important role in the market of fresh vegetable crops, condiments, spices and preserved food in Brazil (FONSECA et al, 2008;MOURA et al, 2010;SUDRÉ et al, 2010). This market is Ciência Rural, v.44, n.6, jun, 2014.…”

Section: Introductionmentioning

confidence: 99%

Gene effect and heterosis in Capsicum baccatum var. pendulum

et al. 2014

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“…Some studies have described the use of this methodology, including Rodriguez et al (2005), in an investigation of Brassica napus L, Vieira et al (2007) and Bertan et al (2009) in a study of Triticum aestivum L., Gonçalves et al (2008) and Rocha et al (2010) in an evaluation of Solanum lycopersicum, Tsivelikas et al (2009) in a study with Cucurbita spp., and Moura et al (2010) in a study of Capsicum chinense.…”

Section: Group Vmentioning

confidence: 96%

“…Jointly analyzing quantitative and qualitative variables can provide a better indication of existing variability (ROCHA et al, 2010). Gower's distance (1971) is a lowcomplexity joint analysis procedure which has been used in several characterization and evaluation studies of germplasms (BERTAN et al, 2009;GONÇALVES et al, 2008;MOURA et al, 2010;QUINTAL et al, 2012;ROCHA et al, 2010;RODRÍGUEZ et al, 2005;TSIVELIKAS et al, 2009;VIEIRA et al, 2007). Therefore, in this study, we conducted joint analysis to characterize and evaluate the genotypic divergence of 14 accessions of Cucurbita moschata collected in the northern region of the State of Rio de Janeiro using qualitative and quantitative variables.…”

Section: Introductionmentioning

confidence: 99%

Genetic divergence among pumpkin landraces

et al. 2016

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Estimating the genetic variability in germplasm collections is important not only for conserving genetic resources, but also for plant breeding purposes. However, generating a large number of different categories data (qualitative and quantitative) often complicate the analysis and results interpretation, resulting in an incomplete distinction of accessions. This study reports the characterization and evaluation of 14 pumpkin (Cucurbita moschata) accessions collected from farms in the northern region of Rio de Janeiro state. Genetic diversity among accessions was also estimated using qualitative and quantitative variables considering joint analysis. The plants were grown under field conditions in a randomized block design with three replications and six plants per plot. Eight qualitative traits (leaf size; seed shape; seed color; color of the fruit pulp; hollow; fruit shape; skin color, and fruit skin texture) and eight quantitative traits (fruit weight; fruit length; fruit diameter; soluble solids, 100 seed weight, and wall thickness measured in the middle and in the lower stem) were evaluated. The data were analyzed considering the Gower distance, and cluster analysis was performed using unweighted pair group method with arithmetic mean (UPGMA). Variability among accessions was observed considering morphoagronomic data. The Gower distance together with UPGMA cluster allowed for good discrimination between accessions in the groups, demonstrating that the simultaneous analysis of qualitative and quantitative data is feasible and may increase the understanding of the variation among accessions. Key words: Cucurbita moschata. Gower distance. Morphoagronomic descriptors. Multivariate analyses. ResumoA estimativa da variabilidade genética em banco de germoplasma é importante não só para conservação dos recursos genéticos, mas também para sua utilização no melhoramento de plantas. Entretanto, a geração de um grande número de variáveis de diferentes categorias (qualitativas e quantitativas) pode dificultar a análise e a interpretação dos resultados, muitas vezes resultando na incompleta distinção dos acessos. Este trabalho objetivou caracterizar 14 acessos de Cucurbita moschata coletados no Norte do Estado do Rio de Janeiro e estimar a divergência genotípica entre esses acessos, utilizando a análise conjunta de variáveis qualitativas e quantitativas. As plantas foram cultivadas a campo, no delineamento de blocos ao acaso, com três repetições e seis plantas por parcela. oito variáveis qualitativas (tamanho da folha; formato da semente; cor da semente; cor da polpa do fruto; reentrância; formato do fruto; cor predominante da casca e textura da superfície da casca) e oito variáveis quantitativas (massa do fruto; comprimento e diâmetro do fruto; teor de sólidos solúveis totais; massa de 100 sementes, e espessura da polpa no pedúnculo, mediana e inferior). Os dados foram analisados considerando a distância de Gower e o agrupamento dos acessos foi realizado pelo método UPGMA. Verificou-se variabilidade entre os aces...

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“…They can be used for culinary, industrial, medicinal, and ornamental purposes Rêgo et al, 2011). Furthermore, their cultivation favors increased income for small farms and the establishment of workers in rural areas, mainly due to extensive use of manual labor at harvest time (Moura et al, 2010;Sudré et al, 2010;Ferrão et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Inheritance of resistance to Pepper yellow mosaic virus in Capsicum baccatum var. pendulum

Bento¹,

Rodrigues²,

Gonçalves³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. We investigated inheritance of resistance to Pepper yellow mosaic virus (PepYMV) in Capsicum baccatum var. pendulum accessions UENF 1616 (susceptible) crossed with UENF 1732 (resistant). Plants from generations P 1 , P 2 , F 1 , F 2 , BC 1:1 , and BC 1:2 were inoculated and the symptoms were evaluated for 25 days. Subsequently, an area under the disease progress curve was calculated and subjected to generation means analysis. Only the average and epistatic effects were significant. The broad and narrow sense heritability estimates were 35.52 and 21.79%, respectively. The estimate of the minimum number of genes that control resistance was 7, indicating that resistance is polygenic and complex. Thus, methods to produce segregant populations that advocate selection in more advanced generations would be the most appropriate to produce chili pepper cultivars resistant to PepYMV.

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Algoritmo de Gower na estimativa da divergência genética em germoplasma de pimenta

Cited by 28 publications

References 21 publications

Gene effect and heterosis in Capsicum baccatum var. pendulum

Gene effect and heterosis in Capsicum baccatum var. pendulum

Genetic divergence among pumpkin landraces

Inheritance of resistance to Pepper yellow mosaic virus in Capsicum baccatum var. pendulum

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