【摘要】 该品种是利用甜菜多粒雄性不育系培育杂交种的方法选育而成。不育系选用吉75—22,保持系为JT07—2。以本所选育的JT2—1为父本,以母、父本3:1配比杂交育成。该组合经过二年三个大区16个点次的“七五”国家攻关区域试验,表现优良。特点是:适应性强,抗病力强,生产力高。根产量比各当地主推品种平均提高15.5％,含糖提高1.63度,产糖量提高29.6％。在东北、华北、西北都具有适宜的产区,推广使用前景广阔。更多还原

【Abstract】 The breeding proocess of the sugarbeet diploid MS hybrid ZhongTian—JiTian202 was described. The hybrid was bred by crossing CMS line Ji75-22 as maternal with JT2-1 as pollen parent. The proportion of the quantity of the maternals and the pollen parents involved in the cross was three to one. The results of the two-year (1988, 1989) national regional test of sugarbeet varieties showed that the mean root yield, sugar content and sugar yield of the hybrid in the whole six places of Xinjiang, Inner Mongolia and Heilonjing were over the check varieties respectively by 15.5, 1.63 and 29.6 percent. The hybrid has higher resistance to cercospora leaf spot and rizhomania of sugarbeet, It can be planted in the Northwest, the North and the Northeast of China because of its wider adaptability.更多还原