Affiliation: | 1.Leaf Tobacco Research Center, Japan Tobacco Inc., Oyama, Tochigi 323–0808, Japan;2.School of Agriculture, Utsunomiya University, Utsunomiya, Tochigi 321–8505, Japan;3.Center for Bioscience Research and Education, Utsunomiya University,Utsunomiya, Tochigi 321–8505, Japan |