Salicylic acid as attenuator of drought stress on germination and initial development of sesame

Sesame is an important crop in Northeast Brazil, where climate conditions require adapted genotypes and alternatives for plant defense against drought. This study aimed to evaluate the salicylic acid as drought attenuator in sesame genotypes. The experiment evaluated six genotypes (BRS Seda, CNPA-G2, CNPA-G3, CNPA-G4, LAG-Branquinha and LAG-Pretinha), five osmotic potentials (0, -0.2, -0.4, -0.6 and -0.8 MPa) and three seed treatments (soaking in distilled water, in salicylic acid and no treatment). CNPA-G4 is tolerant to drought in the germination stage. Salicylic acid at 10^-5 M induced tolerance to drought stress in sesame, but it is necessary to test other concentrations.

Key words:
Sesamum indicum L.; drought; tolerance promotion

Authorship

Adriana C. da Silva

Universidade Estadual da Paraíba/Programa de Pós-Graduação em Ciências Agrárias. Campina Grande, PB. E-mail: dricaconceicao@hotmail.com; alberto@uepb.edu.br; rayssa.rc@outlook.com; welerson.rocker@hotmail.com; duvalchagas@hotmail.comUniversidade Estadual da ParaíbaBrazilCampina Grande, PB, BrazilUniversidade Estadual da Paraíba/Programa de Pós-Graduação em Ciências Agrárias. Campina Grande, PB. E-mail: dricaconceicao@hotmail.com; alberto@uepb.edu.br; rayssa.rc@outlook.com; welerson.rocker@hotmail.com; duvalchagas@hotmail.com

Janivan F. Suassuna jf.su@hotmail.com (Corresponding author)

Universidade Federal do Amapá/Educação do Campo. Mazagão, AP. E-mail:jf.su@hotmail.com (Corresponding author)Universidade Federal do AmapáBrazilMazagão, AP, BrazilUniversidade Federal do Amapá/Educação do Campo. Mazagão, AP. E-mail:jf.su@hotmail.com (Corresponding author)

Alberto S. de Melo

Rayssa R. Costa

Wellerson L. de Andrade

Duval C. da Silva

jf.su@hotmail.com (Corresponding author)

SCIMAGO INSTITUTIONS RANKINGS

Figures | Formulas

Figures (5)
Formulas (3)

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Figure 1
Percentage of germination (PG) of sesame genotypes under different osmotic potentials and pre-treatment of seeds

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Figure 2
Germination speed index (GSI) of sesame genotypes under different osmotic potentials and pre-treatment of seeds

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Figure 3
Shoot length (SL) in sesame seedlings under different osmotic potentials and pre-treatments of seeds

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Figure 4
Catalase activity (CAT) in sesame seedlings under different osmotic potentials and pre-treatments of seeds

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Figure 5
Superoxide dismutase activity (SOD) in sesame seedlings under different osmotic potentials and pre-treatment of seeds

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Figure 1 Percentage of germination (PG) of sesame genotypes under different osmotic potentials and pre-treatment of seeds

Columns with the same lowercase letter at each potential do not differ between seed treatments and columns with the same uppercase letter do not differ between potentials in each seed treatment (Tukey, p ≤ 0.05); DW - Soaking in distilled water ; SA - Soaking in salicylic acid; WS - Without soaking; Vertical bars represent the standard error of the mean

Figure 2 Germination speed index (GSI) of sesame genotypes under different osmotic potentials and pre-treatment of seeds

Figure 3 Shoot length (SL) in sesame seedlings under different osmotic potentials and pre-treatments of seeds

Figure 4 Catalase activity (CAT) in sesame seedlings under different osmotic potentials and pre-treatments of seeds

Figure 5 Superoxide dismutase activity (SOD) in sesame seedlings under different osmotic potentials and pre-treatment of seeds

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Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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Salicylic acid as attenuator of drought stress on germination and initial development of sesame

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[1] jf.su@hotmail.com (Corresponding author)