冬小麦新品种陇中5号以F2代杂交组合200616 为受体进行回交，以外源DNA偃麦草为供体，通过花粉管通道法人工导入技术，在不同生态区域经过多年采用“多代集团混合选择技术”选育而成。在2014 — 2016年度甘肃省陇中片旱地冬小麦区域试验中，2 a 12点(次)平均折合产量4 875.75 kg/hm2，较对照品种陇中1号增产6.50%。陇中5号强冬性，中晚熟，生育期288～293 d，越冬率85%～94%。株高75.3～80.1 cm，穗长6.4～8.0 cm，结实小穗15～18个，穗粒数38～51粒，穗粒重1.7～2.6 g，千粒重37.2～48.5 g，容重781～790 g/L，蛋白质含量(干基)145～150 g/kg，湿面筋含量(14%水分基)246～316 g/kg。对条锈病免疫。抗寒性3级，抗旱性3级(抗旱指数0.985)。高抗蚜虫，抗蚜比值0。适宜在甘肃中东部、宁夏固原、青海贵德、陕西宝鸡等年降水量350～450 mm、海拔1 700～2 380 m的干旱半干旱地区种植。

Longzhong 5 is a new winter wheat cultivar， with F2 hybrid combination of 200616 as receptor for backcross， Elytrigia repens(L.) Nevski with exogenous DNA as donor， using artificial introduction technology of pollen tube pathway and “multi generation group breeding and selection technology” method in different ecological regions for years. In 2014 — 2016， the average yield in 2 a 12 sites(times) was 4 875.75 kg/hm2， 6.50% higher than that of the check Longzhong 1 in Gansu Winter Wheat Regional Test. The result shows that Longzhong 5 is a strong winterness variety， middle-late mature， with growth period of 288～293 days， the overwintering rate of 85%～94%， plant height of 75.3～80.1 cm， ear length of 6.4～8.0 cm，number of spikelet of 15～18， number of grains of 38～51， ear grain weight of 1.7～2.6 g， 1 000 grain weight of 37.2～48.5 g， bulk density of 781～790 g/L， the content of protein (dry basis ) of 145～150 g/kg，and wet gluten(14% wet basis) of 246～316 g/kg. It is immune to stripe rust， Grade 3 cold resistant， Grade 3 drought resistant (drought resistance index is 0.958)， high resistant to aphids， with resistant ratio to aphid of 0. It is suitable to be grown in the arid and semi-arid areas with precipitation of 350～450 mm， in elevation between 1 700 m and 2 380 m in Middle-east of Gansu， Guyuan of Ningxia， Guide of Qinghai and Baoji of Shaanxi.

S512.1

国家国际科技合作专项项目(2015DFR31120)。