1. College of Agronomy Hunan Agricultural University Changsha Hunan 410128 China
2. Crop and Environmental Sciences Division International Rice Research Institute (IRRI) DAPO Box 7777 Metro Manila Philippines
3. Centre for Plant Molecular Biology Tamil Nadu Agricultural University Coimbatore Tamil Nadu India
4. MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River College of Plant Science and Technology Huazhong Agricultural University Wuhan Hubei 430070 China