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Effect of chilling stress on cell death of rice seedlings. Six day old etiolated seedlings were treated with 18 °C or 12 °C chilling stress. Phenotypes of rice leaves at different time points (A); Trypan-blue staining (B) of control (28 °C) and chill-stressed (18 °C and 12 °C) leaves after 0 h, 0.5 h, 12 h, and 48 h greening.
