‘紫星’洋葱是以‘意大利红’(Italian Red)为母本,‘陕西高桩红皮’为父本杂交后,经过连续6代系统选育而成的新品种,属中日照、中早熟类型,生育期230 d。鳞茎厚扁球形,球形指数0.70,鳞茎外皮深紫红色,内部鳞片浅紫色,辛辣味淡,口感脆甜,品质好;平均单球质量316 g,产量79 700kg·hm-2,高抗紫斑病、霜霉病。适宜中日照中南部地区秋播早夏收露地栽培。 ’Zixing’ onion is a new breed that has been crossed with six generations of system after crossing with Italian Red as female parent and ’Shaanxi high-pile red-breed’ as male parent, Precocious type, growth period 230 d. The bulbs were thick and flat with spherical index of 0.70. The bulbous skin was dark purple in color, the internal scales were light purple, spicy and light, the taste was crisp and sweet with good quality. The average single ball mass was 316 g and the yield was 79 700 kg · hm-2. Downy mildew Suitable for sunshine in central and southern southern part of the early autumn planting open field cultivation.