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Salinity Effects on Seedling Growth and Yield Components of Rice

U.S. Salinity Laboratory, USDA-ARS, PWA, Riverside, CA 92507 USA

View larger version (15K): [in a new window]   Fig. 1 Regression of salinity (measured by electrical conductivity [EC] of irrigation solutions) on seedling survival rate. Measurements of seedling survival rates at 622°C d (25 DAP) from six replicates are represented by the symbol (x). The solid line is the quadratic equation: survival rate . The dashed lines are upper and lower confidence levels (95%)

View larger version (28K): [in a new window]   Fig. 2 Regressions of salinity on relative yields based on yield components. Relative yield were calculated from observations for yield components divided by the mean values of the controls. TW, 1000-kernel weight; PL, panicle length; PBP, primary branch per panicle; FT, fertility; TP, tiller number per plant; SP, spikelet number per panicle; GWP, grain weight per panicle; GWL, grain weight per plant; EC, electrical conductivity

View larger version (14K): [in a new window]   Fig. 3 Means of pollen viability and fertility