Resumo

ALMEIDA, Wener S. de et al. Emergence and seedling vigor of cowpea genotypes under salt stress. Rev. bras. eng. agríc. ambient. [online]. 2012, vol.16, n.10, pp. 1047-1054. ISSN 1415-4366.  http://dx.doi.org/10.1590/S1415-43662012001000003.

The objective of this study was to evaluate the effect of salinity of irrigation water on cowpea and identify genotypes tolerant to salt stress in the eaR_Ly stages of its development. The levels of electrical conductivity (EC) of irrigation water were 0, 2.5, 5.0 and 7.5 dS m^-1. The tolerance of cowpea was evaluated by the relative reduction in shoot dry matter of each genotype. The results were compared and analyzed by Scott-Knott test at 0.05 level of probability. All variables were affected by increasing salinity of irrigation water. The genotype CE-182 was more tolerant at EC of 2.5, 5.0 and 7.5 dS m^-1 of water salinized with NaCl. In the solution containing mixture of salts, the genotypes CE-9 and CE-551 were the most tolerant.

Palavras-chave : Vigna unguiculata; salinity; tolerance.