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Agronomic traits of ZmDHN15-overexpressing transgenic plants under cold stress. (A,B) Plant height. (C,D) Root length. (E,F) Silique length. (G) Seed dry weight per plant. Scale bars represent 1 cm. Data were expressed as the mean of triplicate values, and the error represented the SD. Asterisks indicate statistically significant differences: p < 0.05 (*) and p < 0.01 (**).
