[1] Shizuoka Univ, Fac Agr, Dept Biol & Environm Sci, Suruga, Shizuoka 4228529, Japan
[2] Natl Inst Fruit Tree Sci, Dept Citrus Res, Nagasaki 8592501, Japan
[3] Natl Inst Fruit Tree Sci, Dept Citrus Res, Shimizu, Shizuoka 4240292, Japan
[4] Panasonic Corp, Appliances Co, Corp Engn Div, Kusatsu, Shiga, Japan