Effect of salinity on dry matter production stability was examined in 50 ri
ce genotypes. Significant differences observed among genotypes, environment
al conditions, genotyes x environment interaction (G x E) and environment (
linear) for seedling dry weight suggested the presence of variability in ge
notypes and their responses to stressful environments. A wide variation was
observed in mean dry matter yield (Y-i) as well as sensitivity to salinity
as indicated by regression coefficient (b(i)). It (b(i)) was close to 1 fo
r root and / or shoot dry weight in a number of genotypes, viz. Arshinay am
en, Azobbati, Balamdhan, Bethidhan, BINA-5-153-8-163, BR 18, BR 22, Dolicha
kkol, DM152, Gambur, IR 21015-196-3-1-3, Jabra aus, Kalobori, Pokkali, Shia
lporangi, etc., but in others regression coefficient was found to deviate f
rom unity. High mean yield (Y-i) higher than grand mean associated with low
regression coefficient (b(i)<1) and deviation from regression (S(2)d(i) <1
)for root and / or shoot dry weight was observed in some genotypes, viz. Ba
lamdhan, Birpala, Canning 7, Dolichakkol, Milagrosa, Pokkali, Shialproangi,
etc. Stability in dry matter production in rice genetypes was discussed in
relation to their Y-i, b(i) and S(2)d(i) values.