Oumarou Souleymane, Sido Amir, Adamou Haougui, Adamou Basso and Illyassou Mossi Maiga Rice, index selection, stability, genotypes, environment, interaction 1-7 3 (2) 2019 April,2019 Index selection is a breeding method that aids the breeder for simultaneous selection of multiple traits. It is an effective selection criterion that has often been used in many breeding programs for diverse crops including rice. Ten rice promising lines and a local check were assessed for yield, selection index and selection index stability over 3 locations in southern west of Niger republic. The experimental design was a randomised complete bloc design with three replications. Genotypes showed good performances in term of yield, yield components and index selection. Three different mega environments were observed with the two being close and slightly overlapped. The ideal environment to screen for high index selection was the environment 1. The genotypes 3, 9 and 11 performed well in environment 3 and 1, while the winners in environment 2 were genotypes 6, 7 and 2. The most stable genotypes across environments were 8, 3, 9, 5 and 10, while the ideal was the genotype 9. These varieties are promising candidates for farmer’s adoption and release.