The Relationship between Relative Water Content of Leaves, Soluble Sugars, Accumulation of Dry Matter, and Yield Components of Rice (Oryza sativa L.) under Water-stress condition during the Generative Stage

This study aims to observe the relationship between leaves’ relative water content (RWC), soluble sugar, dry matter accumulation, and rice yield components under water-stress conditions during generative stage. Six varieties were observed three different stress treatments: non-stress, moderate (-0.35 bar), severe (-0.70 bar). The results showed that water-stress; RWC at reproductive stage had correlation with maturity (r = 0.97), colored pollen 0.87), percentage of grains 0.54) grain weight 0.57). anthesis was closely related ripening 0.99), 0.87) filled 0.58), per hill 0.69). also 0.61), 0.72). Furthermore, biomass 0.47), sugars -0.68). 0.75). result might allow us use as a determinant for stress, it is important maintain especially