甜菜单胚雄性不育杂交种“内2499”的选育

“内2499”是二倍体甜菜单胚型雄性不育杂交种,该品种是以二倍体多胚品系RZ-1为父本,单胚雄性不育系N9849-CMS为母本,按1：5比例杂交而成。在内蒙古自治区甜菜品种区域试验中,两年平均产量5097．50kg／667m2,较对照增产31．79％,平均含糖率为15．80％。在内蒙古自治区甜菜品种生产试验中,经过田间实际测产和检糖,该品种的单产为4420．00kg／667m2,与对照相比,增幅18．36％;合糖率为17．67％,与对照相比,增加O．33个百分点。与单粒丰产性指标相比,达到单粒型、丰产型品种标准。

Breeding of New Sugarbeet Monogerm male sterile hybrid Variety Nei2499

Nei 2499, a new monogerm cytoplasmic male sterile diploid sugarbeet variety, from a cytoplasmic male sterile monogerm diploid line N9849-CMS as the female parent with a polygerm diploid line RZ-1 as the male parent was crossed through natural pollination hy 5：1.In the test of sugarbeet disease-resistance variety in Inner Mongolia, the average root yield, sugar content were 5097.5 kg/acre, lS.8%,The demonstration experiment in the Inner Mongolia, the average root yield were 4420 kg/acre, increased by 18.36%,sugar content was 17.67%and increased 0.33%,Therefore, this variety reached Monogerm type and high yield level.