supported by the National 973 Program of China(2006CB101700);the National 863 Program of China(2006AA10Z1C6);the National Natural Science Foundation of China(30771338,30700495);the Science and Technology Department of SichuanProvince,China(09ZQ026-086)
Vernalization, the process of a long exposure to low temperature to induce flowering in plants, is essential for plants to adapt to cold winters. The presence of vernalization genes Vrn-A1, -B1, and -D1 in four corner...