Influência do nível de irradiância no crescimento, produção e composição química do óleo essencial de hortelã-do-campo (Hyptis marrubioides Epl.)

Sales, Juliana de Fátima; Pinto, José Eduardo Brasil Pereira; Ferri, Pedro Henrique; Silva, Fabiano Guimarães; Oliveira, Carolina Brom Aki de; Botrel, Priscila Pereira

doi:10.5433/1679-0359.2009v30n2p389

Cited by 10 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Plants subjected to greater available light tend to have shorter LMs because of the plant's greater photosynthetic investment in producing secondary branches (Sales et al, 2009). In this study, the longest LM was observed in the most lighted environments, as was the case in regard to number of internodes.…”

Section: Discussionsupporting

confidence: 52%

Pre-breeding in Passiflora subrotunda Mast.: Morphological and Reproductive Characterization at Different Light Levels

Souza¹,

Souza²,

Almeida³

et al. 2018

horts

View full text Add to dashboard Cite

Passiflora are ornamental plants that are appreciated as part of outdoor decor, composing pergolas and gardens, as well as in interior ornamentation where species tolerant to environments with less light availability are used. The objective of this study was to evaluate the influence of different levels of light and pot types on morphological and reproductive characteristics in Passiflora subrotunda and to support genetic breeding programs of ornamental passifloras. The conditions of 75% and 100% light favored vegetative morphological characteristics through the time (105 days). Floral characteristics also presented higher values along increasing light levels. All qualitative characters related to flower and plant coloration did not vary among genotypes. The species possesses diurnal anthesis and flowers throughout the year. Plants cultivated in concrete pots showed greater growth and flower production. Pollen grains (PGs) are large, with an isopolar form, a small polar area, and a long aperture, and amylaceous. Percentage of viable PG was high: above 97% using Alexander solution and reaching up to 91% with fluorescein diacetate. Stigmas were partially receptive during the flower’s opening period. Percentage of self-compatibility was lower, based on the higher fertilization rate through cross-pollination. These information will be used in planning of ornamental Passiflora-breeding programs, assisting in the selection of characteristics and breeding methods.

show abstract

Section: Discussionsupporting

confidence: 52%

Pre-breeding in Passiflora subrotunda Mast.: Morphological and Reproductive Characterization at Different Light Levels

Souza¹,

Souza²,

Almeida³

et al. 2018

horts

View full text Add to dashboard Cite

show abstract

“…In T. riparia, the main component of the essential oil was the sesquiterpene hydrocarbon 14-hydroxy-9-epi-(E)-caryophyllene, regardless of the irradiance level under which plants were grown (Table 2). Similar results were obtained for all irradiance levels for Hyptis marrubioides Epl., where the major component of the essential oil was the oxygenated monoterpene cis-thujone (Sales et al, 2009), and for Mentha x piperita L., where menthol was the main component (Pegoraro et al, 2010), regardless of the irradiance level. In contrast, a sharp reduction in phenolic content, particularly of monoterpene hydrocarbons, was observed for thyme cultivated under shade; similarly, the content of thymol, the main essential oil component from plants in full sunlight, was drastically lower forplants in the shade (Letchamo et al, 1994;Letchamo and Gosselin, 1995).…”

Section: Resultsmentioning

confidence: 97%

“…For instance, we found lower content of sabinene, limonene, camphor, isoborneol, (E)-caryophyllene and α-terpineol for plants cultivated under 80% shading, and higher content of α-transbergamotene and cubenol under 50% shading compared to other treatments (Table 2). Likewise, the composition of the essential oil of Hyptis marrubioides varied depending on the radiance level of the environment where plants were grown (Sales et al, 2009). Shading basil plants (Ocimum basilicum L.) did not decrease the oil content but affected the relative composition of volatile compounds (Chang et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

Yield and Composition of the Essential oil of Tetradenia riparia (Hochst) Codd (Lamiaceae) Cultivated Under Different Shading Levels

et al. 2018

View full text Add to dashboard Cite

Light has direct influence on growth and development by altering the morphophysiology of the plant and the content and composition of secondary metabolites. The present study aimed to evaluate the yield and composition of the essential oil of Tetradenia riparia cultivated under different shading levels. Plants were propagated by cuttings and cultivated either under full sunlight and in environment completely covered by black polyethylene sheeting to obtain shading levels of 30%, 50%, and 80%. Plants were grown under experimental conditions for 150 days. The essential oil was extracted from fresh leaves in triplicate for each treatment through steam distillation with a modified Clevenger apparatus. The components of the essential oil were identified using a gas chromatograph coupled with a mass spectrometer (GC/MS), and compared to retention indices and authentic mass. The largest yields of essential oil came from plants cultivated under 30% and 50% shading, followed by plants cultiveted under full sunlight and under 80% shading. The main component found was the sesquiterpene hydrocarbon 14-hydroxy-9-epi-(E)-caryophyllene. Some components, such as verbenone, were only found in the treatment under full sunlight, while numerous others were exclusive to the different shading treatments. The yield and chemical composition of the essential oil of T. riparia is influenced by the level of shading.

show abstract

“…In Aloysia gratissima plants, the essential oil yield in plants grown under full sunlight (0.73 g plant -1 ) and 40% shading (0.88 g plant -1 ) was significantly higher than in those grown at 80% shading (0.26 g plant -1 ) (Pinto et al 2007). In Hyptis marrubioides, the content of essential oil was not influenced by the levels of irradiation (20, 60 and 100% of natural light), but the essential oil yield was higher when plants were grown at the level of 100% irradiation (Sales et al 2009). This result is in agreement with our data, i.e.…”

Section: Short Communicationmentioning

confidence: 92%

Citral accumulation in Cymbopogon citratus plant as influenced by N6-benzylaminopurine and light intensity

Prins

Freitas

Gomes³

et al. 2013

Theor. Exp. Plant Physiol.

View full text Add to dashboard Cite

Cymbopogon citratus (lemongrass) is an aromatic species whose essential oil is rich in citral, with industrial applications due to its lemon scent. The effects of environmental factors on the percentage and composition of essential oils are the main challenges in commercial cultivation. Various studies have indicated the positive effect of cytokinin on terpene production. The present work aimed to evaluate the effect of N6-benzylaminopurine (BAP) associated with light intensity on the production and composition of essential lemongrass oil. Plants were grown under field conditions (FIELD) and shade (SHADE). The study employed a 2x7 factorial scheme with two growing environments, seven BAP concentrations, and five replicates. After seven months of growth, a single application of the synthetic cytokinin BAP was performed at concentrations 0, 30, 60, 90, 120, 150, and 180 mg L -1 . One week after the BAP application, plants were harvested and the essential oil was extracted in a Clevenger apparatus. The chemical composition of the essential oil of plants treated with 60, 120, and 180 mg L -1 of BAP was determined by Gas Chromatography (GC). The essential oil percentage was not affected by the treatments, showing 1.08% on average. On the other hand, the citral percentage was negatively influenced by BAP, and light intensity had no effects. In plants treated with 60 mg L -1 of BAP, citral percentage was 72%, on average, while in plants treated with 180 mg L -1 , the mean percentage of citral was 33%.

show abstract

Influência do nível de irradiância no crescimento, produção e composição química do óleo essencial de hortelã-do-campo (Hyptis marrubioides Epl.)

Cited by 10 publications

References 3 publications

Pre-breeding in Passiflora subrotunda Mast.: Morphological and Reproductive Characterization at Different Light Levels

Pre-breeding in Passiflora subrotunda Mast.: Morphological and Reproductive Characterization at Different Light Levels

Yield and Composition of the Essential oil of Tetradenia riparia (Hochst) Codd (Lamiaceae) Cultivated Under Different Shading Levels

Citral accumulation in Cymbopogon citratus plant as influenced by N6-benzylaminopurine and light intensity

Contact Info

Product

Resources

About