Crescimento e produção de genótipos de gergelim (Sesamum indicum L.) em função de lâminas de irrigação.

Abstract

Aiming to quantify and evaluate growth and productive capacity of different sesame genotypes, due to irrigation ieyers, an experiment was conducted at Experimental Station of Embrapa, in Barbalha-CE, where was studied five irrigation Ieyers (L1 = 47.38, 12 = 240.38, L3 = 477.88, L4 = 698.88 and L5 = 1026.50 mm) and its effects on different Sesame genotypes (G1 = BRS Seda; G2 = BRS 196 CNPA G4 and G3 = ELAG09 - 27,561 lineage). Factoriaily combined, resulted in 15 treatments. The experimental delineation was arranged in strips with 4 replicates, totaling 60 experimental units. Destructive growth analysis was performed, with samplings from 15 to 15 days to estimate leaf area and phytomass. Growth variables were studied in 10 plants from useful area of plots. At the end of the cycle, were evaluated production and its components. Results related to genotypes were subjected to variance and mean analysis, compared with Tukey test, applying a polynomial regression analysis until second order, to irrigation Ieyers, to be a quantitative nature factor. Higher values of production components were obtained with sheet of 1026.50 mm that doubled the sesame productivity, in relation to tower water availability. Sesame genotypes growth was affected by different irrigation Ieyers, with higher growth of BRS Silk, with greater water availability, and reduced water availability, ELAG09-27561. In conditions of low water availability for irrigation, it is recommended use of ELAG09-27561 sesame genotype and, when could be viable complete irrigation, it is recommended use of BRS Seda genotype.