Growth, Solute Accumulation, and Ion Distribution in Sweet Sorghum under Salt and Drought Stresses in a Brazilian Potiguar Semiarid Area

Gabriela Carvalho Maia de Queiroz (), José Francismar de Medeiros (), Rodrigo Rafael da Silva, Francimar Maik da Silva Morais, Leonardo Vieira de Sousa, Maria Vanessa Pires de Souza, Elidayane da Nóbrega Santos, Fagner Nogueira Ferreira, Juliana Maria Costa da Silva, Maria Isabela Batista Clemente, Jéssica Christie de Castro Granjeiro, Matheus Nathan de Araújo Sales, Darcio Cesar Constante, Reginaldo Gomes Nobre and Francisco Vanies da Silva Sá
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Gabriela Carvalho Maia de Queiroz: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
José Francismar de Medeiros: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Rodrigo Rafael da Silva: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Francimar Maik da Silva Morais: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Leonardo Vieira de Sousa: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Maria Vanessa Pires de Souza: Agricultural Engineering Department, Federal University of Ceará, Fortaleza 60455-760, CE, Brazil
Elidayane da Nóbrega Santos: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Fagner Nogueira Ferreira: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Juliana Maria Costa da Silva: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Maria Isabela Batista Clemente: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Jéssica Christie de Castro Granjeiro: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Matheus Nathan de Araújo Sales: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Darcio Cesar Constante: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Reginaldo Gomes Nobre: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil
Francisco Vanies da Silva Sá: Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil

Agriculture, 2023, vol. 13, issue 4, 1-22

Abstract: Agriculture in semiarid regions commonly face problems because of salt and availability of irrigation water. Considering this, studies on cultures resistant to salt and water stresses involving sweet sorghum are required. Therefore, the aim was to evaluate the growth and other mechanisms of tolerance to salinity and water deficit in BRS 506 sweet sorghum. The experimental design was conducted in Upanema-RN, Brazil, in randomized blocks, where the isolated and interactive effect of 3 salinity levels, expressed as the electrical conductivity of irrigation water (1.5, 3.8, and 6.0 dS m −1 ), and 3 irrigation depths (55, 83, and 110% of crop evapotranspiration) were evaluated. During the cycle, sorghum adapted to the salinity and deficit irrigation depth, since stem height reduced only −5.5% with increasing salinity and −11.95% with decreasing irrigation depth, and aerial dry mass was affected by interaction only at the end of the cycle. Proline, total amino acids, and total soluble sugars were not differenced by stresses. Additionally, around 68.71% of total Na + was at roots at the end of the cycle. In summary, sorghum BRS 506 was more tolerant to salt than water stress and used Na + compartmentalization in root cells as the main tolerance mechanism.

Keywords: salinity; sorghum; stress response; tolerance; water deficit; tolerance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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