Biomassa e composição química de genótipos melhorados de espécies medicinais cultivadas em quatro municípios paulistas

Vaz, Ana Paula; Scaranari, Ciro; Batista, L. A. R.; Figueira, Glyn Mara; Sartoratto, Adilson; Magalhães, Pedro Melillo de

doi:10.1590/s0100-204x2006000500021

Cited by 15 publications

(10 citation statements)

References 9 publications

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“…Devido às propriedades terapêuticas da erva-baleeira existe grande interesse na ampliação de estudos sobre a planta, principalmente estudos voltados para a seleção de genótipos interessantes quanto aos seus aspectos agronômicos e a sua composição química (Vaz et al, 2006). Visando a produtividade comercial dessa espécie medicinal, são necessários estudos de métodos eficientes de propagação.…”

Section: Introductionunclassified

Reguladores vegetais e substratos no enraizamento de estacas de erva-baleeira (Varronia curassavica Jacq.)

Mendes

Lacerda

Rocha

et al. 2014

Rev. bras. plantas med.

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RESUMO:A erva-baleeira, espécie medicinal anti-inflamatória, pode ser propagada por sementes, no entanto, o desenvolvimento de métodos eficientes para a propagação vegetativa possibilitará a uniformidade nas populações e a clonagem de plantas de interesse quanto aos aspectos agronômico e de composição química. O presente trabalho objetivou avaliar os efeitos do ácido naftaleno acético (NAA) e do ácido indolbutírico (IBA) e de diferentes substratos no enraizamento de estacas semi-lenhosas de erva-baleeira. Os experimentos foram conduzidos em casa de vegetação em Montes Claros em delineamento inteiramente casualizados. Para o experimento teste da influência das auxinas, as estacas foram submetidas a tratamentos com NAA e IBA nas concentrações de 0, 500, 1000, 2000, 3000 e 4000 mg L -1 , e para o experimento dos substratos, cinco substratos foram avaliados (vermiculita expandida + casca de arroz parcialmente carbonizada (proporção de 1:1); vermiculita expandida; substrato orgânico comercial para hortaliça (Tropstrato HT ®); areia; solo + compostagem (proporção de 1:1)). Após 90 dias, para ambos os experimentos, foram avaliadas porcentagem de estacas enraizadas, de estacas mortas, de estacas vivas com calos, de estacas mortas com calos, número de raízes formadas por estaca e comprimento das três maiores raízes (cm). O regulador vegetal ideal para o enraizamento da espécie é o IBA, na concentração de 2.000 mg L -1 , sendo que o NAA não é recomendado para a indução radicial em estacas erva-baleeira. O substrato vermiculita com casca de arroz carbonizada na proporção de 1:1 proporcionou maior porcentagem de enraizamento nas estacas da erva-baleira que o substrato solo + compostagem (1:1), os demais substratos não diferenciaram entre si.Palavras-chave: plantas medicinais, estaquia, auxina, propagação vegetativa. ABSTRACT: Growth regulators and substrates on rooting of Varronia curassavica Jacq.The Varronia curassavica Jacq., black sage, is an anti-inflammatory medicinal species that can be propagated by seed; however, the development of efficient methods for vegetative propagation will enable uniformity in the populations and cloning of plants of interest regarding the agronomic aspects and chemical composition. The aim of this study was to assess the effects of the naphthalene acetic acid (NAA) and indole butyric acid (IBA) and different substrates on the rooting of semi-hardwood cuttings of black sage. The experiments were conducted in a greenhouse at Montes Claros, in the State of Minas Gerais, Brazil, as a randomized complete design. For the experiment to test the influence of auxin, the cuttings were subjected to treatments with NAA and IBA at the concentrations of 0, 500, 1000, 2000, 3000 and 4000 mg L , and for the experiment with substrates, five substrates were evaluated (expanded vermiculite + carbonized rice husk (1:1); expanded vermiculite; commercial organic substrate for vegetable (Tropstrato ® HT); sand; soil + compost (1:1)). After 90 days, in both experiments, we evaluated the rooting percentage of cutt...

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Section: Introductionunclassified

Reguladores vegetais e substratos no enraizamento de estacas de erva-baleeira (Varronia curassavica Jacq.)

Mendes

Lacerda

Rocha

et al. 2014

Rev. bras. plantas med.

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“…The usual compounds in this species include mono and sesquiterpenes (Gomes et al, 1993). Both oil composition and plant yield, including biomass, are directly influenced by environmental factors (Vaz et al, 2006), thus representing a challenge to breeders to establish productive and stable genotypes and to keep the chemical uniformity required by the industry. Furthermore, it is necessary to promote self-sustaining products of national interest and conserve the immense Brazilian biodiversity, since it is a native species.…”

Section: Introductionmentioning

confidence: 99%

Performance of ginger grass (Lippia alba) for traits related to the production of essential oil

Yamamoto

Colombo

Filho³

et al. 2008

Sci. agric. (Piracicaba, Braz.)

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Lippia alba (Verbenaceae) is a shrub whose essential oil has important biological, pharmacological, and aromatizing properties. To reach the sustained cultivation of new species with economic potential, the present study aimed to evaluate L. alba performance for fresh leaf matter (FM), leaf dry matter (DM), virus symptoms (VS -Cucumber mosaic virus, CMV), oil yield (OY), and oil chemical composition (OC), and to evaluate DM stability and adaptability. Ten genotypes of four chemical groups (chemotypes) were evaluated in six experiments designed as randomized blocks with two plants per plot, over the whole State of São Paulo, Brazil. A 2.0 × 0.4 × 1.6 m spacing was used in Monte Alegre do Sul and Pindorama, while a 1.0 × 0.4 × 0.6 m spacing was used in Campinas, where four experiments were established under different irrigation and fertilization conditions. The genotype effect was significant (p < 0.05) for all traits evaluated, with high leaf productivity of IAC-16 (citral chemotype), best OY means in the linalool and limonene/carvone chemotypes, and susceptibility of the latter chemotype to CMV. The genotype performance oscillations in the six environments were significant for FM and DM, and despite their significance for phytochemical traits (OY and OC), they were of low magnitude. No qualitative variation was detected for OC. The IAC-2 (linalool) and IAC-13 (limonene/carvone) genotypes showed high stability and wide adaptability, and are recommended to establish initial cultivations of this species. This research also indicated genetic sources to start Lippia alba genetic breeding programs. IAC-1 to IAC-4 (linalool), IAC-9 to IAC-11 (myrcene/ camphor), IAC-13 and IAC-14 (limonene/carvone), and IAC-16 (citral). Plants were selected based on differences in plant morphology, oil yield, and the relative proportions of substances in the oil. Six experiments were carried out in three regions of the State of São Paulo (SP), Brazil, in a randomized block design, with four replicates and two plants (clones) per plot. Four experiments were installed in Campinas (22°31' S, 47°02' W, 680 m), representing four environments (E1 -with both fertilization and irrigation; E2 -with fertilization but no irrigation; E3 -no fertilization but with irrigation; E4 -no fertilization nor irrigation). As to fertilization, two sidedressing applications of the 04-14-08 (N, P 2 O 5 , K 2 O) fertilizer were made, and a drip irrigation system was used. A row spacing of 1.0 m was adopted in these four experiments (environments), with 0.4 m between clones and 0.6 m between plots. The other two experiments were carried out in Monte Alegre do Sul (22°24' S, 46°24' W, 760 m) (E5) and Pindorama (21°06' S, 48°32' W, 534 m) (E6), with a row spacing of 2 m, 0.4 m between clones, and 1.6 m between plots, under a sprinkler irrigation system.

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“…Besides, as in vitro cultivation is based on mitoses (clonal origin), more efficient genotypes will result in significantly higher PDMC concentrations in the plant or tissues grown in vitro. However, growing conditions, especially in the field, can induce significant variations in the production of plant mass and PDMC contents, even in high-yielding genotypes (Vaz et al, 2006). Therefore, it is essential that the conditions that provide the best genotype-environment relation are known, even for in vitro systems.…”

Section: Main Factors Affecting Pdmc Productionmentioning

confidence: 99%

“…The genus Phyllanthus has important PDMCs, especially the alkaloids phyllantine and hypophyllanthin (Lee et al, 2016). Seeds of a genotype of Phyllanthus amarus with high concentrations of these alkaloids, selected by the CPQBA/UNICAMP (Vaz et al, 2006), were previously germinated in vitro using the MS culture medium at half-strength. Derived 1-cm long micro-cuttings were transferred for callus induction into similar medium, adding 0.5 mg L -1 2,4-D.…”

Section: Callus and Cell Suspension Culturementioning

confidence: 99%

Advances and challenges on the in vitro production of secondary metabolites from medicinal plants

2019

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The production of secondary metabolites from medicinal plants, also called Plant-Derived Medicinal Compounds (PDMC), is gaining ground in the last decade. Concomitant to the increase in the knowledge about pharmacological properties of these compounds, horticultural plants are becoming the most important, sustainable and low-cost biomass source to obtain high-complex PDMCs to be used as medicaments. Biotechnological tools, including plant cell and tissue culture and plant genetic transformation, are increasingly being employed to produce high quality and rare PDMC under in vitro conditions. The proper use of these technologies requires studies in organogenesis to allow for better control of in vitro plant development and, thus, to the production of specific tissues and activation of biochemical routes that result in the biosynthesis of the target PDMCs. Either biotic or abiotic factors, called elicitors, are responsible for triggering the PDMC synthesis. In vitro techniques, when compared to the conventional cultivation of medicinal plants in greenhouse or in the field, have the advantages of (1) producing PDMCs in sterile and controlled environmental conditions, allowing better control of the developmental processes, such as organogenesis, and (2) producing tissues with high PDMC contents, due to the efficient use of different biotic and abiotic elicitors. Nevertheless, the process has many challenges, e.g., the establishment of step-by-step protocols for in vitro biomass and PDMC production, both involving and being affected by many factors. Other limitations are the high costs in opposition to the relatively cheaper alternative of growing medicinal plants conventionally. This paper aims to quickly review the general origin of plant secondary metabolites, the leading techniques and recent advances for PDMC in vitro production, and the challenges around the use of this promising technology.

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Biomassa e composição química de genótipos melhorados de espécies medicinais cultivadas em quatro municípios paulistas

Cited by 15 publications

References 9 publications

Reguladores vegetais e substratos no enraizamento de estacas de erva-baleeira (Varronia curassavica Jacq.)

Reguladores vegetais e substratos no enraizamento de estacas de erva-baleeira (Varronia curassavica Jacq.)

Performance of ginger grass (Lippia alba) for traits related to the production of essential oil

Advances and challenges on the in vitro production of secondary metabolites from medicinal plants

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