Affiliation: | (1) Present address: Botanical Institute, University of Basel, Hebelstrasse 1, 4056 Basel, Switzerland;(2) Department of Vegetable Crops, University of California at Davis, Davis, CA 95616, USA;(3) Department of Botany, University of Hong Kong, Pokfulam Road, Hong Kong;(4) Institute of Botany, Academia Sinica, Nankang, Taipei, Taiwan |