Abstract The influence of three levels water supply (unlimited (WW); stress during flowering (RO); rainfed (P)) on radiation properties and yield two soybean varieties (Sinara, Sin; Sigalia, Sig) were evaluated. Sin is considered to be tolerant stress. effect leaf area index, year, variety, meteorological variables evapotranspiration (ET) was analysed by hierarchical regression. This study atte...

Variations in leaf shape range from highly divided leaves (okra leaf) to normalleaf shape (Meredith, 1 ). Heitholt et al. (1 ) described higher yields of okra-leaf isolines for a given amount of intercepted radiation, indicating that the okra-leaf types utilized more efficiently the intercepted radiation than the normal-leaf types. However, information on physiological parameters of the cotton ...