Physical and physiological quality of the Lippia rotundifolia seeds according to the osmotic conditioning and electrical conductivity

Meira, Messulan Rodrigues; Martins, Ernane Ronie; Resende, Luciane Vilela

doi:10.1590/0103-8478cr20150633

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…Therefore, infertility and isolation contribute to the occurrence of crossover among related individuals, compromising the seed bank (Costa, Vieira, Fajardo, & Chagas, 2015). Thereby, it is believed that the main form of reproduction of this species is by budding xylopodia, because, according to in situ observation, the individuals are distributed close to each other, which can lead to a low genetic variability of the species (Meira, Martins, & Resende, 2016).…”

Section: Resultsmentioning

confidence: 99%

Genetic diversity of <i>Lippia rotundifolia</i> Cham. in Minas Gerais, Brazil

Meira¹,

Martins²,

Resende³

2019

Acta Sci. Biol. Sci.

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Lippia rotundifolia is an aromatic species, endemic from Campos rupestres and isolated by mountains. We aimed with the research to study the genetic variability of chá-de-pedestre (Lippia rotundifolia Cham.) with natural occurrence in ten places of the State of Minas Gerais, from molecular markers of ISSR type. The places of collection were: Parque Estadual de Serra Nova; Parque Estadual Veredas do Peruaçu; Abóboras community; Gigante community; edge of Rio do Peixe; environmental preservation area of Olhos d´água; private property in Joaquim Felício; Parque Estadual do Rio Preto; São Gonçalo do Rio das Pedras and brook of Rio Tigre. After the establishment of the extraction and amplification of DNA fragments with primers ISSR, an array of genetic distance was built. From this matrix, we analyzed the genetic diversity index as the allelic frequency (Na and Ne), Shannos´s index (H´), polymorphism (PLP), heterozygosity (He) and gene flow (Nm). The result showed higher genetic variability within the population (93%). The genetic diversity index was low (He = 0.132; H´= 0.214; Na = 1.111; Ne = 1.183; PLP = 56.67%). In general the species have low genetic diversity. The greatest diversity in populations occurred with an average temperature of 20°C. The Rio Tigre showed higher genetic distance and isolation.

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Section: Resultsmentioning

confidence: 99%

Genetic diversity of <i>Lippia rotundifolia</i> Cham. in Minas Gerais, Brazil

Meira¹,

Martins²,

Resende³

2019

Acta Sci. Biol. Sci.

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“…To produce the secondary metabolites required for these different uses, it is necessary to select specimens of good genetic origins, especially in the case of littleknown native species, such as L. rotundifolia. Among the many challenges involved are the difficulties in accessing these plants in a natural environment and in obtaining their seedlings through sexual propagation, since their seeds are very small and have a low germination of 25% (Meira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Growth and essential oil content of accessions of Lippia rotundifolia in Minas Gerais, Brazil

Meira

Martins

Silva

et al. 2021

Pesq. agropec. bras.

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The objective of this work was to evaluate the growth and essential oil content after transplantation and cutting of Lippia rotundifolia accessions from a natural population from the state of Minas Gerais, Brazil. Eight accessions were evaluated (PVP, GIG, RPE, ODA, JFE, PRP, SGS, and RTI) in six periods (60, 81, 102, 123, 144, and 165 days after transplanting and cutting), in a completely randomized experimental design. The following parameters were assessed: average width and length of the basal, median, and apical pair of leaves; plant height; stem diameter; and number of leaves. At 165 days, the yield of essential oil and the fresh and dry phytomass of the aerial part were also evaluated. Sixty days after the last evaluation, regrowth was measured from height, stem diameter, and number of leaves. The JFE accession stands out for emission of leaves, with a better development at 165 days after transplanting. RPE and PRP respond well to regrowth at 102 and 123 days after cutting, respectively. The SGS accession shows a high essential oil yield of 2.2%, and PVP, a low yield of 0.3%.

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Physical and physiological quality of the Lippia rotundifolia seeds according to the osmotic conditioning and electrical conductivity

Cited by 2 publications

References 14 publications

Genetic diversity of <i>Lippia rotundifolia</i> Cham. in Minas Gerais, Brazil

Genetic diversity of <i>Lippia rotundifolia</i> Cham. in Minas Gerais, Brazil

Growth and essential oil content of accessions of Lippia rotundifolia in Minas Gerais, Brazil

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