Developing SSR primers in Bombax ceiba(Bombacaceae) Causes of difficulties with natural regeneration of a Bombax ceiba population in Hong-He dry-hot valleys (DHV) Kapok capsule formation and fiber development process in Yuanjiang dryhot valley. A Study of Microlepidoptera (Oecophoridae and Xyloryctidae) Damaging Bombax and Cinnamomum