Vigor and tolerance of cowpea (Vigna unguiculata) genotypes under salt stress

Authors

  • Francisco Vanies da Silva Sá Universidade Federal de Campina Grande
  • Ronaldo do Nascimento Universidade Federal de Campina Grande
  • Mariana de Oliveira Pereira Universidade Federal de Campina Grande
  • Vitória Ediclécia Borges Universidade Federal de Campina Grande
  • Rafaela Felix Basílio Guimarães Universidade Federal de Campina Grande
  • Jailton Garcia Ramos Universidade Federal de Campina Grande
  • Jacqueline da Silva Mendes Universidade Federal de Campina Grande
  • Jaílson Lopes da Penha Universidade Federal de Campina Grande

DOI:

https://doi.org/10.14393/BJ-v33n6a2017-37053

Keywords:

Seed physiology, Germination, Water salinity

Abstract

Saline stress is a frequent phenomenon in the arid and semi-arid regions of the globe, affecting the agricultural production of these regions, and it is necessary to use strategies that minimize the impacts of saline stress under agriculture. This requires the incorporation of species, variety and genotypes tolerant to increase agricultural production in those regions. This study aimed to evaluate germination and initial growth of cowpea genotypes under salt stress. The experimental design was completely randomized in 19 x 3 factorial scheme, composed of nineteen cowpea cultivars and three osmotic potentials, with four replicates of 50 seeds each. The germination test lasted for eight days, when the seeds were evaluated for germination percentage, germination speed index, length of shoot and root, accumulation of dry mass of shoot and root. The increase in salinity affected germination and initial growth of the cowpea genotypes. The genotypes 6 - MNCO2-689F-2-8, 10 - MNCO2-675F-4-10, 12 - MNCO3-737F-5-9, 16 - MNCO2-677F-2, 18 - BRS-Pajeú and 19 - Paulistinha exhibited higher tolerance to salt stress in the stage of germination and initial growth. The genotypes 11 - MNCO2-675F-9-5, 13 - BRS-Tumucumaque, 15 - MNCO3-736F-7 and 17 - BR17-Gurgueia were more susceptible to the effects of salt stress in the stage of germination and initial growth.

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Published

2017-11-09

How to Cite

SÁ, F.V. da S., NASCIMENTO, R. do, PEREIRA, M. de O., BORGES, V.E., GUIMARÃES, R.F.B., RAMOS, J.G., MENDES, J. da S. and PENHA, J.L. da, 2017. Vigor and tolerance of cowpea (Vigna unguiculata) genotypes under salt stress . Bioscience Journal [online], vol. 33, no. 6, pp. 1488–1494. [Accessed4 December 2022]. DOI 10.14393/BJ-v33n6a2017-37053. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/37053.

Issue

Section

Agricultural Sciences