Evaluation S1 Family Recurrent Selection in a Rice Population

Abstract

We evaluated the potential of S1 family recurrent selection in the composite population CP 103 (IR 38499) cycle 1, using genetic male sterile line IR 36 ms for intermating in the population. At IRRI, wet season and 1990 dry season. The results showed that in both seasons lines comparable with or better than the best check inall traits although this population had not undergone previous selection for yield. correlations between S1 and the corresponding S4 were significant for all traits excepts days to 50% flowering and pecentage unfilled grains. This study indicate the yield components and grain quality trailts can be measured on fertile S1 plants in small plots. This indicates S1 Selection could be used in a recurrent selection program to improve these traits.