AGRONOMIC VALUE AND NUTRITIONAL CONTENT OF BIOFORTIFIED RICE WITH IRON AND ZINC

Abstract

In order to evaluate the agronomic value and content of micronutrients of biofortified rice (GAB), a trial was conducted with 12 genotypes with high iron and zinc, repeated in 10 locations with extreme poverty and chronic malnutrition problems in Panama (Board of  Nutrition Farms), five rainfed and five in puddling. It was used a Randomized Complete Block with three replications. The topological arrangement for rainfed was 40 x 20 cm between rows and plants, placing six to eight seeds per hill. In puddling transplantation was performed using a seedling per hole in a frame of 25 x 25 cm. The variables were studied under a combined analysis of variance and the means were separated by the DMS (P<0.05). It was used GGE Biplot-SReg analysis to estimate the stability and adaptability. The results showed significant differences (P<0.01) between systems (rainfed = 2.136 and puddling = 3.526 t^.ha^-1). In rainfed, the superior genotypes were GAB-7, GAB-11 and GAB-10. The SReg GGE Biplot identified GAB-10 as the most stable and GAB-5, GAB-10, GAB-7 and GAB-11 with better adaptability. In puddling stood GAB-11, GAB-4 and GAB-6. The genotypes GAB-2, GAB-11 and GAB-4 were the most stable, while GAB-1 and GAB-6 show better adaptability. The iron and zinc content varied between systems, locations and genotypes, suggesting that the climatic and soil conditions can influence its grain content. By participatory selection producers identified the genotypes GAB-11, GAB-6, GAB-8 and GAB-2, in both systems.