An understanding of the seed germination ecology of resistant junglerice can assist in predicting its potdistribution and developing effective management strategies. The effects of various environmental factojunglerice seed germination were investigated in a series of laboratory experiments. Germination in the laborwas decreased by salinity (> 100 mM NaCl) and moisture stress (> -0.4 and -0.6 MPa osmotic potential) fosusceptible and resistant populations, respectively. Also, the logistic function was used to quantify the responemergence to sowing depths of 0.2, 0.5, 1, 1.5, 2, 3, 4, and 6 cm. The results showed that seedlings of thpopulation had the highest final emergence (61.12%) compared with S (50.96%) and R3 (48.75%) populations.

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