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Expression of TaVRT-1 during phenological development in wheat. Spring wheat cv Manitou and winter wheat cv Norstar were grown for 14 d at 20°C under LD photoperiod and were then vernalized at 4°C for the times indicated. Shoot apices were dissected and analyzed for the appearance of a double-ridge structure. Arrow indicates the double-ridge formation indicative of transition to the reproductive phase. RNA gel blots indicating TaVRT-1 transcript level are shown for each time point.
