Recomendacoes tecnicas sobre gergelim; regiao Centro-Sul do Brasil. EMBRAPA. Centro Nacional de Pesquisa do Algodao (Campina Grande, PB). DESEMPENHO AGRONÔMICO DE GENÓTIPOS DE GERGELIM (Sesamum indicum L.) SOB Pesquisadora, Doutora, EMBRAPA, CNPA, Campina Grande. O trabalho foi realizado em dezembro de , na Embrapa Algodão, de onde foram retirados discos foliares de gergelim para serem mensurados os índices.
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The experiment was conducted in a clayey soil, sampled until cm deep and classified as clay loam Fluvic Neosol RYwhose textural and physical characterizations were performed at the Irrigation and Salinity Laboratory of the Academic Unit of Agricultural Engineering of the Federal University of Campina Grande.
In the sesame plants evaluated, chlorophyll contents ab and total fitted to a quadratic polynomial model Figure 3A, B and C and their maximum estimated values Sesamol, with its antioxidant properties, promotes high chemical stability in the oil, preventing rancidification. Os dados corroboram os de Argenta et al. Sesame Sesamum indicum L. The sesame crop has stood out due to the high nutritional content of its seeds, in addition to being able to be cultivated in the tropical and subtropical regions such as Northeast Brazil.
However, no studies were found on the determination of physiological and biochemical variables in genotypes of sesame under different water depths. These pigments act as photoprotectors, deactivating singlet and triplet oxygen by absorbing the energy present in these compounds during their formation, which prevents oxidative damages to plant cells Engel amp; Poggiani, ; Taiz amp; Zeiger, ; Brito et al. Journal of Botany, v.
Non destructive analysis of photosynthetic pigments in leaves of Sesamum indicum (L.)
Its production is directly associated with chlorophyll a production Silva et al. Stress responses in plants: Conclusions Sesame genotypes did not differ statistically and there were differences in the variables between the water replenishment rates.
De acordo com Markwell et al. Reactive oxygen species, oxidative damage, and antioxidative defense mechanism in plants under gergelum conditions.
Revista Brasileira de Fruticultura, v. According to Sharma et al.
Recomendacoes tecnicas sobre gergelim; regiao Centro-Sul do Brasil.
Revista Brasileira de Fisiologia Vegetal, v. To the Brazilian Agricultural Research Embapa Embrapa Cotton for providing the structure needed to conduct this study. Depth L 3 Increased water replacement in the soil resulted in decreases of Hence, analysis of photosynthetic pigments is essential to evaluate the health and integrity of internal cell apparatus during photosynthesis Taiz amp; Zeiger, ; Rigon et al. Additionally, these authors highlight that cultivation success depends on supplemental irrigation during the critical period of the crop.
How to cite this article. Data corresponding to the following variables were collected: In this context, sesame oil content becomes one of the most important variables to evaluate the feasibility of the crop from the agronomic point of view. The genotypes did not differ statistically and embrapz were differences in the variables between the water replacement rates. Then, plants were embrspa for seven days to facilitate the removal of seeds from the capsules.
Copper enzymes in isolated chloroplasts: Maximum points of LA dmbrapa For the interaction irrigation depth x genotypes, there was no significance. In this context, it can be inferred that plants with lower contents of this pigment would be more subject to damages caused by the excess of light to the photosystem.
Adaptation and acclimation mechanisms. Their main characteristics include: Forest Ecology and Management, v. According to Bernardo et al. O produtor pergunta, a Embrapa responde. Such behavior may indicate that sesame plants are more susceptible to the stress caused by excess of water than the one caused by its absence, corroborating the claim of Arriel et al. These results corroborate the hypothesis that sesame is sensitive to water stress. Oil content in the seeds was quantified by nuclear magnetic resonance NMRbased on non-destructive tests, in which the value found results from the magnetic field scanning of the sample Oxford Instruments, All evaluations, except of production, were carried out at 90 days after emergence DAE.
The sesame genotypes used were white and creamcolored, all developed by the Brazilian Agricultural Research Corporation Embrapa Cotton.