甜菜新品种双丰14号的选育

本文介绍了甜菜新品种双丰14号的选育过程。该品种是二倍体多粒型雄性不育杂交种,其母本为二倍体多粒型双丰5号雄性不育系,父本为二倍体多粒型品系双丰10—6—25和双丰10—6—84。双丰14号品种属于标准型(N)抗病品种,有较强的杂种优势,抗褐斑病性强,适应性广泛。在1987～1989年黑龙江省甜菜品种区域试验中,其平均块根产量、含糖率和产糖量比统一对照品种双丰8号(CK)提高9.8％、0.7度和15.3％;在1990～1992年的生产试验中,其平均块根产量、含糖率和产糖量比CK提高11.3％、0.66度和17.1％。在我国北方地区栽培条件下的种植密度为60000～75000株/公顷。

The Breeding Process of the New Sugarbeet Diploid Hybrid Shuangfeng 14

The breeding process of the new sugarbeet diploid hybrid Shuanfeng 14 is described. This variety was bred by crossing diploid multigerm CMS line Shuangfeng 5 with diploid multigerm lines Shuanfeng 10-6-25 and Shuangfeng 10-6-84. It belongs to the standard type (N-type) sugarbeet variety with stronger heterosis, better resistance to the leaf spot disease (Cercospora) and wider adaptability. It's mean root yield, sugar content and sugar yield were over the ones of variety Shuang-feng 8 (CK) with 9. 8%,0.7% and 15. 3% in Heilongjiang sugarbeet variety regional test in 1987-1989 and were over the ones of the CK with 11.3%,0.66% and 17. 1% in the sugarbeet production trial in 1990-1992. The plant density of the variety should be 60000-75000 plants/ha in North China.