VIEIRA, Mauro R.; LACERDA, Claudivan F.; CARVALHO, Ponciana L.; CÂNDIDO, Magno J. D.; SOUSA, Robson A.; SIMPLICIO, Josimar B.
Résumé:
The use of saline water can cause salt accumulation in root medium, which affects
several plant physiological processes, mineral nutrition, and crops growth and yield. In this work, it
was evaluated the leaf Na+/K+ ratio and the capacity of ions retention in the culms of two sorghum
genotypes, CSF 18 and CSF 20, irrigated with waters of different salt levels, 0.90 (well water), 2.60,
4.20 and 5.80 dS m-1. A completely randomized block design, in a factorial arrangement (2 x 4), with
four replicates was adopted. The experiment was set up in the field, during the dry season. At 112 days
after sowing, plants containing completely open panicles were harvested. The results showed
genotypic differences in relation to Na+/K+ ratio. Both genotypes showed differential retention of Na+
and K+ in the culms.
