@article{Michio Kawasaki2014, title={Effects of the Direction of Gravistimulation on Tuber Formation and Amyloplast Distribution in Tuber Tips of Chinese Yam}, author={Michio Kawasaki and Saki Kanehira and Mohammad Nazrul Islam}, journal={Plant Production Science}, volume={17}, number={4}, pages={298-304}, year={2014}, doi={10.1626/pps.17.298} }