_ Japonica là (loài phụ) lúa chịu lạnh mới xuất hiện ở Việt Nam. Đây là những giống lúa hạt tròn, chất lượng gạo ngon, thời gian sinh trưởng ngắn phù hợp với SX vụ xuân và khu vực miền núi phía Bắc.
_ Japonica is (species)-tolerant rice in Vietnam. These are the varieties of rice grain quality delicious rice, round, short growth time fit SX service spring mountains and the North.
_ Japonica is (subspecies) new cold tolerant rice appeared in Vietnam. This is a round grain rice varieties, good grain quality, short growth duration matching SX spring and the northern mountainous region.
_ japonica rice Hardy (subspecies) appeared in vietnam. This is round like wheat rice seeds of good quality, short growth period, suitable for mountain area and the north spring sx.