Divergência genética de populações de Piper hispidinervum C. DC. com base em caracteres morfoagronômicos

Negreiros, Jacson Rondinelli da Silva; Miqueloni, Daniela Popim

doi:10.1590/s1983-40632013000200007

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…The formation of coincident groups, through the use of complementary methods of multivariate analysis, is also described in pepper (Negreiros & Miqueloni, 2013), passion fruit (Paiva et al, 2014), tomato (Luz et al, 2016;Amaral Júnior et al, 2017;Maciel et al, 2018b), which shows consistency of similarity results in the groups composition. The results obtained in the present study corroborate those found by these authors.…”

Section: Resultsmentioning

confidence: 97%

Multivariate techniques in the determination of genetic diversity in pest-resistant mini tomato genotypes

et al. 2018

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The objective of this study was to compare methods of multivariate analysis on the evaluation of genetic diversity of mini tomato and to identify promising genotypes with resistance to pests. The experiment was conducted at the Vegetable Experiment Station of the Universidade Federal de Uberlândia, Monte Carmelo campus, from April 2013 to November 2016. The experimental design was a randomized complete block design with 16 treatments and four replications totaling 64 plots, and each plot represented by five plants. Sixteen genotypes were characterized, 12 from the F2RC1 generation, obtained through the interspecific crossing between the wild access LA-716 (Solanum pennellii) and pre-commercial lines of mini tomato (UFU-73 and UFU-2) (Solanum lycopersicum) and the UFU-2 lines. The content of acyl sugar, the amount of glandular trichomes (types I, IV, VI and VII), twospotted spider mite and whitefly resistance were evaluated. We concluded that there exist genetic variability between the genotypes. The number of groups formed by the canonical variated analysis was higher (four groups) than that obtained by the Tocher method (three groups) and UPGMA (three groups), demonstrating a greater discrimination power. The Tocher and UPGMA methods were consistent in the analysis of the genetic divergence in pest resistant germplasm of tomato, with the acyl sugar content being the most important variable. Genotype UFU-73-F2RC1 # 11 is resistant to pest attack, while the other studied lines have intermediate resistance.

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Section: Resultsmentioning

confidence: 97%

Multivariate techniques in the determination of genetic diversity in pest-resistant mini tomato genotypes

et al. 2018

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“…The variability of essential oil yield of long pepper populations (Table 1) is high, which indicates the possibility of genetic gains, as noted by Negreiros and Miqueloni (2013a) for long pepper. On the other hand, safrole content shows a higher degree of homogeneity.…”

Section: Discussionmentioning

confidence: 93%

Yield of essential oil and safrole content based on fresh and dry biomass of long pepper in the Brazilian Amazon

2015

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Long pepper (Piper hispidinervum) is an Amazonian species of commercial interest due to the production of safrole. Drying long pepper biomass to extract safrole is a time consuming and costly process that can also result in the contamination of the material by microorganisms. The objective of this study was to analyze the yield of essential oil and safrole content of fresh and dried biomass of long pepper accessions maintained in the Active Germoplasm Bank of Embrapa Acre, in the state of Acre, Brazil, aiming at selecting genotypes with best performance on fresh biomass to recommend to the breeding program of the species. Yield of essential oil and safrole content were assessed in 15 long pepper accessions. The essential oil extraction was performed by hydrodistillation and analyzed by gas chromatography. A joint analysis of experiments was performed and the means of essential oil yield and safrole content for each biomass were compared by Student's t-test. There was variability in the essential oil yield and safrole content. There was no difference between the types of biomass for oil yield; however to the safrole content there was difference. Populations 9, 10, 12 and 15 had values of oil yield between 4.1 and 5.3%, and safrole content between 87.2 and 94.3%. The drying process does not interfere in oil productivity. These populations have potential for selection to the long pepper breeding program using oil extraction in the fresh biomass.

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VARIABILIDADE GENÉTICA UTILIZANDO DESCRITORES MORFOLÓGICOS PARA ACESSOS DE Capsicum spp. PARA FINS ORNAMENTAIS

Luz

Santos

Ambrosio

2019

NAT

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O mercado de pimentas para fins ornamentais é um setor recém explorado, mas com grande potencial de crescimento no ramo de floricultura e paisagismo. As pimenteiras que possuem folhagem variegada, porte baixo, frutos com coloração variada em seus diferentes estádios de maturação, contrastando com as folhagens, já são utilizadas como plantas ornamentais, cultivadas e comercializadas em vasos. O presente trabalho teve como objetivo avaliar a variabilidade genética visando o potencial ornamental de acessos de Capsicum spp. através de modelos biométricos. Foram utilizados 55 acessos de Capsicum spp, e a caracterização morfoagronômica dos acessos foi realizada avaliando diferentes partes da planta. O terceiro par de correlações canônicas, com correlação de 0,51, associa plantas com área do dossel compacto-densa, com menor comprimento e largura de dossel e de pequeno porte, associado com folhagens estreitas e de pecíolo grande. Esta associação é vantajosa para ornamentação. Ficou evidenciada a presença de variabilidade genética na população, o que é bastante favorável ao melhoramento na medida em que a heterogeneidade genética possibilita a obtenção de ganhos por meio de seleção.Palavras-chave: pimenta; modelos biométricos; correlações canônicas; análise de trilha. GENETIC VARIABILITY FOCUSED ON ORNAMENTAL POTENTIAL OF A Capsicum spp. ACCESSION ABSTRACT: Pepper market for ornamental purposes is recently exploited; however, it has a great growth potential in floriculture and landscaping. Pepper with variegated foliage, small size, and varied fruit coloration at different ripening stages contrasting with leaves have already been used as ornamental plants cultivated and purchased as potted plants. This study aimed to evaluate genetic variability of Capsicum spp. focusing on its ornamental potential by means of biometric templates. Fifty-five Capsicum spp. accessions were used and a morpho-agronomic characterization of the accessions were performed by evaluating different plant parts. The third canonical correlations are 0.51 and it associates compact-dense, small, shorter length and width canopy plants with narrow foliage and large petiole, which is advantageous for ornamentation. Genetic variation was evidenced in the population being very favorable for plant breeding programs once genetic heterogeneity enables obtaining gains through selections.Keywords: pepper; biometric templates; canonic correlations; trail analysis.

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Divergência genética de populações de Piper hispidinervum C. DC. com base em caracteres morfoagronômicos

Cited by 3 publications

References 19 publications

Multivariate techniques in the determination of genetic diversity in pest-resistant mini tomato genotypes

Multivariate techniques in the determination of genetic diversity in pest-resistant mini tomato genotypes

Yield of essential oil and safrole content based on fresh and dry biomass of long pepper in the Brazilian Amazon

VARIABILIDADE GENÉTICA UTILIZANDO DESCRITORES MORFOLÓGICOS PARA ACESSOS DE Capsicum spp. PARA FINS ORNAMENTAIS

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