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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Recomendacoes tecnicas sobre gergelim; regiao Centro-Sul do Brasil.

Revista Brasileira de Fisiologia Vegetal, v. Nevertheless, in these regions, irrigation can be used to supplement rainfall, which leads to improvement in the growth, development and yield of crops. Adaptation and acclimation mechanisms. Quantitative factors irrigation depth were subjected to polynomial regression analyses, selecting the model of highest significance in the F test Ferreira, Conclusions Sesame genotypes did not differ statistically and there were differences in the variables between the water replenishment rates.

However, no studies were found on the determination of physiological and biochemical variables in genotypes of sesame under different water depths. Juvenile growth in three vines mebrapa India.

De acordo com Markwell et al. Oil content in the seeds increased with the increment in gergdlim replacement until the estimated water depth of Tillage in the experimental area consisted in one plowing and four cross harrowing procedures, using a leveling harrow.

Stress responses in plants: This behavior demonstrates sesame sensitivity to both deficit and excess of water in the soil.


Leaf relative water content was measured according to Smart amp; Bingham The region has mean rainfall of mm, mean air temperature of In addition, yield reduction is directly related to the water stress conditions, because plants use the stomatal closure mechanism to protect themselves from water losses through transpiration, leading to a reduction in the photosynthetic rate Taiz amp; Zeiger, At 50 DAE, leaf samples were collected to determine enzymatic activity: How to cite this article.

Activation of systemic disease resistance in pea by an avirulent bacterium or a benzothiadiazole, but not by a fungal leaf spot pathogen. Data corresponding to the following variables were collected: How to cite this article.

Descrição botânica e técnicas da polinização controlada do gergelim (Sesamum indicum L).

Nonetheless, increment in water depth above Depth L 3 Total leaf area cm 2 was determined by measuring the length and width of leaflets and using the equation proposed by Silva et al.

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. 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.

In the sesame genotypes evaluated here, the maximum estimated relative water content RWC Forest Ecology and Management, v. At 95 DAE, harvest was done manually by cutting the whole plant at soil level.


Determining the content of carotenoids in plants subjected to some sort of stress is very important, due to their role in the dissipation of the energy intercepted. In natural environment, antioxidative responses to abiotic variations are induced by similar mechanisms, which gergeim in adaptations to drier or more humid periods, to days with higher or lower light incidence, as well as to high and low temperatures, since these factors lead to the increase in ROS contents and, consequently, stimulate likewise antioxidant activity Sharma et al.

Analyses were carried out using the statistical programs Sisvar 5. Increased water replacement in the soil resulted in decreases of The increase in electrolyte leakage as soil gergelum content decreased can be attributed to a consequence of the limitation in photosynthesis imposed by the water deficit, which results in disruption of membrane integrity, triggered by the overproduction of reactive oxygen species ROS.

Table 2 shows gergelmi analysis of variance summary for the growth physiological, biochemical and production variables. In this context, this study aimed to evaluate the physiological, biochemical and productive behavior of sesame genotypes as a function of different rates of water replacement.