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Ultraviolet-B (UVB, wavelength 280-320 nm) radiation has been demonstrated to affect growth and development of many plants. This study was conducted to determine the effect of UVB radiation on stomatal density and opening of Oryza sativa and to test if the stomatal response to UVB was associated with different sensitivity of growth to UVB in four cultivars. Ten-day-old seedlings of IR45 and IR74 (UVB...
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