1. Department of Horticulture Zhejiang University Zijingang Campus 866 Yuhangtang Road Hangzhou 310058 China
2. Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology 866 Yuhangtang Road Hangzhou 310058 China
3. Key Laboratory of Tea Biology and Resources Utilization Ministry of Agriculture Tea Research Institute Chinese Academy of Agricultural Sciences Hangzhou 310008 China
4. Department of Botany & Plant Pathology Purdue University West Lafayette IN 47907‐2054 USA