1. Department of Food Sciences and Nutritional Health, Kyoto Prefectural University, Shimogamo-Hangi, Sakyo, Kyoto 606-8522, Japan; Vegetable Division, Kyoto Prefectural Agricultural Research Institute, Amarube, Kameoka, Kyoto 621-0806, Japan; Department of Biochemical Science and Technology, and Department of Agricultural Science, Kagoshima University, Korimoto 1-21, Kagoshima 890-0065, Japan; Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, Uppsala SE-75007,...