Quantitative genetic analysis of methylxanthines and phenolic compounds in mate progenies

Cardozo, Euclides Lara; Donaduzzi, Carmen Maria; Ferrarese-Filho, Osvaldo; Friedrich, Juliana Cristhina; Gonela, Adriana; Sturion, J. A.

doi:10.1590/s0100-204x2010000200008

Cited by 15 publications

(4 citation statements)

References 13 publications

(12 reference statements)

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“…There are still few studies reporting caffeine content as a target for yerba mate breeding programs, but results observed in the literature for this and other compounds indicate the possibility of genetic gains with genotypes selection, especially for caffeine high heritability (Cardozo Junior et al, 2010;Duarte et al, 2020;Tomasi et al, 2021;Vieira et al, 2021). Morphotypes differentiation concerning bioactive compounds can become the target of yerba mate silviculture, with the possibility of introducing genotypes with differentiated raw material.…”

Section: Resultsmentioning

confidence: 99%

Bioactive compounds and leaf anatomy of yerba mate morphotypes

Duarte

Gabira

Tomasi

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to evaluate the bioactive compounds and foliar anatomy of yerba mate (Ilex paraguariensis) morphotypes. The antioxidant capacity, total phenolic compounds, methylxanthines, and caffeoylquinic acids were determined from the aqueous extract of leaves of the following yerba mate morphotypes: “sassafras”, dark green, dull green, gray, and “peludinha”. Light microscopy and scanning electron microscopy were used to observe the anatomical differentiations. The dark-green morphotype showed the highest contents of caffeine (20.4 mg g-1), differing significantly only from the “peludinha” morphotype (8.8 mg g-1). All morphotypes showed similar and high antioxidant activity (886.0 and 588.1 μmol Trolox equivalent antioxidant activity per gram of sample for ABTS and DPPH, respectively), as well as high total phenolic compounds content (73.9 mg gallic acid equivalent per gram of sample). Although the anatomy of the leaf mesophyll is similar, the wax deposition and cuticle striation configuration on the adaxial surface differ between all five morphotypes.

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Section: Resultsmentioning

confidence: 99%

Bioactive compounds and leaf anatomy of yerba mate morphotypes

Duarte

Gabira

Tomasi

et al. 2022

Pesq. agropec. bras.

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“…Progenies had five Brazilian geographical origins (provenances), as follows: Ivaí (PR) (progenies 1 to 25), Colombo (PR) (progenies 26 to 50), Barão de Cotegipe (RS) (progenies 51 to 75), Quedas do Iguaçú, PR, (progenies 76 to 100), Pinhão (PR) (progenies 101 to 125), Antônio Olinto (PR) (progenies 126 to 150) and Cascavel (PR) (progenies 151 to 175) (CARDOZO JUNIOR et al, 2010). The Ivaí climate is Cfb-type, mesothermal humid subtropical.…”

Section: Methodsmentioning

confidence: 99%

INDIRECT AND EXPEDITE ASSESSMENT OF Ilex paraguariensis COMMERCIAL YIELD

Wendling

Sturion

Reis

et al. 2016

CERNE

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Commercial biomass production is one of the main indicators for selecting erva-mate (Ilex paraguariensis) progenies and clones. Traditional techniques to obtain such information depend on the harvesting of trees and there are some limitations involved, such as high cost and reduced convenience. Thus, in our research we evaluated the efficiency of indirect methods through commercial biomass estimation and score of productivity according to the different provenances, gender and morphotypes. In a provenances and progenies trial installed in 1997, two methodologies of visual analysis were evaluated in August 2015 (two years after the last harvest). For that reason, five expert evaluators determined, for each plant, an estimate of the commercial biomass (kg), and a grade, based on a score of productivity (0-10). In order to assess the productivity using traditional techniques, all plants were pruned and their commercial biomass (leaves and fine branches smaller than 7 mm diameter) were harvested and weighed (kg . plant -1 ). The evaluations were performed in a randomized-block experiment with five repetitions, seven different provenances and 126 progenies, totaling 5,292 evaluated plants. The methods utilized were effective to estimate the commercial biomass. The evaluators showed accuracy, expressing efficiently the largest productivity obtained when comparing the means of provenances, plants gender and morphotypes. The highest correlations were observed in the general analysis of the means, and the estimation of commercial biomass was considered the best methodology for estimating the commercial biomass assessed in adult erva-mate plants. METODOLOGIA PARA AVALIAÇÃO EXPEDITA E INDIRETA DA PRODUTIVIDADE COMERCIAL DE ERVA-MATERESUMO: A produção de biomassa comercial é uns dos principais indicadores para seleção de progênies e clones de erva-mate. Técnicas tradicionais para se obter tais informações dependem da colheita das árvores e apresentam, dentre outras limitações, elevado custo e reduzida praticidade. Assim, objetivou-se avaliar a eficiência de métodos indiretos, por meio de estimativa de biomassa comercial e escore de produtividade em função de diferentes procedências, sexo e morfotipos. Em um teste de progênies e procedências instalado em 1997, foram avaliadas em agosto de 2015 (dois anos após a última colheita) duas metodologias de análise visual. Para tanto, participaram cinco avaliadores treinados que determinaram, para cada planta, uma estimativa de biomassa comercial (kg), e uma nota, com base em um escore de produtividade (0-10). Para avaliação da produtividade pelas técnicas tradicionais, todas as plantas foram podadas e tiveram sua biomassa comercial (folhas e ramos finos menores de 7 mm de diâmetro) colhida e avaliada por meio de pesagem (Kg . planta -1 ). As avaliações foram realizadas em experimento instalado em blocos ao acaso, com cinco repetições, sete procedências e 126 progênies, totalizando 5292 plantas avaliadas. Os métodos avaliados foram eficientes na estimativa da biomassa comerc...

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“…This difference in genetic diversity could be explained by the fact that yerba mate is mainly propagated through sexual reproduction, which could increase genetic diversity [2]. In addition, I. paraguariensis is an allogamous species, which employs cross-fertilization as a reproductive strategy to promote intense gene flow between populations and, in this way, generate high levels of genetic diversity [86,87].…”

Section: A Moderately Low Genetic Diversity For Ilex Guayusa In the Ecuadorian Amazonmentioning

confidence: 99%

Assessing the Genetic Diversity of Ilex guayusa Loes., a Medicinal Plant from the Ecuadorian Amazon

et al. 2021

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Ilex guayusa Loes. is a shrub native to the Neotropics, traditionally consumed as an infusion. Despite its cultural value and extensive use, genetic research remains scarce. This study examined the genetic and clonal diversity of guayusa in three different Ecuadorian Amazon regions using 17 species-specific SSR markers. The results obtained suggest a moderately low degree of genetic diversity (He = 0.396). Among the 88 samples studied, 71 unique multilocus genotypes (MLGs) were identified, demonstrating a high genotypic diversity. A Discriminant Analysis of Principal Components (DAPC) revealed the existence of two genetic clusters. We propose that a model of isolation-by-environment (IBE) could explain the genetic differentiation between these clusters, with the main variables shaping the population’s genetic structure being temperature seasonality (SD × 100) (Bio 4) and isothermality ×100 (Bio 3). Nonetheless, we cannot dismiss the possibility that human activities could also impact the genetic diversity and distribution of this species. This study gives a first glance at the genetic diversity of I. guayusa in the Ecuadorian Amazon. It could assist in developing successful conservation and breeding programs, which could promote the economic growth of local communities and reinforce the value of ancestral knowledge.

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Quantitative genetic analysis of methylxanthines and phenolic compounds in mate progenies

Cited by 15 publications

References 13 publications

Bioactive compounds and leaf anatomy of yerba mate morphotypes

Bioactive compounds and leaf anatomy of yerba mate morphotypes

INDIRECT AND EXPEDITE ASSESSMENT OF Ilex paraguariensis COMMERCIAL YIELD

Assessing the Genetic Diversity of Ilex guayusa Loes., a Medicinal Plant from the Ecuadorian Amazon

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