春小麦新品系200706为对矮败小麦轮选群体材料进行花药培养，获得加倍单倍体(DH)纯系材料，再经系谱选育而成。在2011 — 2012年甘肃省水地春小麦(东片)区域试验中，2 a 10点(次)折合平均产量5 386.80 kg/hm2，较对照品种陇春23号增产3.12%，居14个参试品种(系)第3位。该品种株高84.0 cm，穗长8.6 cm，千粒重44.32 g，容重 780.1 g/L，生育期106 d。籽粒含粗蛋白141.8 g/kg、湿面筋304 g/kg，沉淀值41.2 mL。经鉴定，苗期对混合菌表现感病，成株期对条中32号表现感病，但严重度和普遍率较低；对条中33号、CH42、HY8、水4、水5及混合菌表现免疫。适宜在甘肃中部沿黄灌区、高寒阴湿区和二阴地区及周边生态类型相似地区种植。

200706 is a newly bred spring wheat line by pedigree selection and developed from double haploid (DH) pure lines obtained by culturing the anthers of dwarf abortion wheat population. The average yield is 5 386.8 kg/hm2， which is 3.12% higher than that of the check Longchun 23 in the regional test and production test in the period 2011 — 2013 in eastern water land of Gansu. The result shows that the plant height， spike length， 1000-grain weight， bulk density and growth period are 84.0 cm， 8.6 cm， 44.32 g， 780.1 g/L and 106 d， respectively. As to quality characters of the variety， the seed crude protein， wet gluten and sedimentation value are 141.8 g/kg， 304 g/kg， and 41.2 mL， respectively. The identification of stripe rust resistance by inoculating of Puccinia striiformis f.sp tritici showed 200706 susceptible slightly to mixture races during the seeding stage， susceptible slightly to CY 32， immune to CH 42， CY 33， HY 8， Shui 4， Shui 5 and mixture races at the adult stage. It is suitable to be grown in Central Gansu， including Irrigation Districts Along Yellow River， cold and humid region， semi-arid region of this area and areas under similar ecological conditions.

S512.1

甘肃省农业生物技术研究与应用开发项目(GNSW-2014-15)、甘肃省农业科学院科技创新工程学科团队(2014GAAS06)、甘肃省农业科学院农业科技创新基金(2013GAAS27)部分内容