饲用甜菜新品种新甜饲2号的选育

Breeding of New Fodder Beet Variety Xintiansi 2

新甜饲2号(原代号JZSL-18)是以多粒四倍体自交系NXSL-4为母本,以多粒二倍体授粉系SL-2和SL2- J08为父本,通过杂交选育而成。杂交种父母本配制比例为2:6。该品种2005～2006年参加省饲用甜菜品种区域试验,平均块根产量152104.5kg/hm^2,较对照新甜饲1号增产20.0%;平均含糖率6.22%,较对照提高0.22度;块根干基粗蛋白含量13.95%该品种2006年参加生产示范试验,2007年2月通过新疆维吾尔自治区品种审定委员会审定命名,丰产性强,耐甜菜褐斑病、白粉病,适宜在新疆的南疆、北疆等地区推广种植。

The fodder beet variety, Xintiansi 2 （code name JZSL-18） was bred from female parent （NXSL-4, a polygerm tetraploid line） and male parents （SL-2 and SL2-J08, two diploid polygerm lines） by natural crossing of 6：2. The variety was taken in the Xinjiang fodder beet variety test in both year 2005 and 2006. The mean root yield was 152104.Skg/ha, increased by 20.0% in comparison with the variety Xintiansi 1, and the mean sugar content was 6.22%, increased by 0.22°S. The raw protein content in root was 13.95%. The hybrid was also tested in experimental demonstration in 2006. It was registered by Xinjiang Crop Committee in 2007. This hybrid has a sound root yield property and tolerant to leafspot and powdery mildew. It is suitable to plant in both south and north parts of Xinjiang.