关键词: 洋葱, 品种

Abstract: A new dark-purple onion cultivar‘Purple Star’was bred by seperating F1 of‘Italian Red’crossing‘Shaanxi Gaozhuang Hongpi’and through systematic selection for six generations. It is a middle-day onion with early-mid maturity and the bulbs can be harvested in 230 days from sowing. The bulb is typically thick-flat globe shaped with dark-purple color and its SI is 0.70. The bulbs are moderate pungency，sweet taste，crisp texture and good quality. The average weight of single bulb is 316 g. The average yield is about 79 700 kg ? hm-2. The cultivar shows high resistance to purple blotch，downy mildew. It is suitable for open field of autumn sowing and early-summer harevesting in middle and south part of middle-day area.

Key words: onion, cultivar