Effects of limited irrigation on tomato, pepper and mung bean genotypes
The significant climate changes registered over the past few years demonstrate the vital importance to preserve our natural resources (especially vegetal genetic resources, land, and water) for ensuring a steady food supply to all people. The use of genotypes with tolerance to drought might represent an alternative solution to water shortage. The aim of this study was to investigate the yield and qualitative performance of a plant genetic collection under water stress condition in order to 1) select and introduce in breeding programs germplasm that exhibits the tolerance to water stress; 2) recommend to the farmers genotypes able to tolerate water stress conditions. The experiments were conducted at the Vegetable Research and Development Station in Bacau, Romania, in the period of 2011-2018. Four genotypes of mung bean, ten of tomatoes and six of peppers were tested under three irrigation regimes (optimal irrigation supply - V1, irrigation only at critical moments - V2, irrigation only before planting/sowing V3). Yield performance and some qualitative parameters, such as pigments and soluble solids were determined at harvest. In all of the investigated crops, yield depends on soil water status throughout the growing season and also on genotype. Any restriction related to water irrigation supply is likely to induce a decrease in crop yield. The deficit irrigation exhibits a decrease of crop yield in case of all investigated material. Differences were recorded between investigated genotypes in relation to water stress tolerance.
Brezeanu, P.M., Brezeanu, C., Ambăruş, S., Antal, C.A. and Calin, M. (2020). Effects of limited irrigation on tomato, pepper and mung bean genotypes. Acta Hortic. 1268, 85-94
water stress, vegetables, yield