Supported by the Natfonal Natural Science Foundation of China (30125008 and 30430160).We thank Tian-Xiang Wang (Beijing Normal University, China) for field assistance and Quan-Guo Zhang (Beijing Normal University, China) for comments on the manuscript.
Pollen limitation and resource limitation were invoked to account for the pattern that flowering plants produce more flowers and ovules than fruits and seeds. This study aimed to determine their relative importance in...