冬小麦新品种陇中4号以F2代杂交组合200616为受体进行回交，用外源DNA堰麦草为供体通过花粉管通道法人工导入技术，经过多年“多代集团混合选择技术”选育，在不同生态区域条件下鉴定选育而成。在2012 — 2014年度甘肃陇中片冬小麦区域试验中，2 a 9点(次)折合平均产量4 590.90 kg/hm2，较对照品种陇中1号增产7.28%。陇中4号属强冬性，中晚熟，生育期246～282 d，越冬率85%～90%。株高70.0～93.5 cm，穗长7.0～8.0 cm，穗粒重1.7～2.6 g，千粒重40.5～48.5 g，容重704～754 g/L。对条锈病免疫；抗寒性3级；抗旱性3级，抗旱指数0.914。适宜在甘肃定西、白银、平凉、庆阳，宁夏固原，青海贵德等地年降水量350～450 mm，海拔1 700～2 380 m的干旱、半干旱区种植。属优质抗寒抗病旱地品种。

Longzhong 4 is a newly bred winter wheat cultivar by F2 hybrid combination of 200616 as receptor for backcross， artificial introduction technology of pollen tube pathway by exogenous DNA wheat straw as donor， using “multi generation breeding， hybrid selection technology group” method in different ecological regions selected and bred the identification. In 2012 — 2014， the average yield of 2 a 9 (Times) reaches 4 590.90 kg/hm2， which is 7.28% higher than that of the check Longzhong 1 in winter wheat regional test of Gansu. The result shows that Longzhong 4 is a strong winter， medium late maturity， growth period is 246 ～ 282 days， the winter rate is 85% ～ 90%， plant height is 70.0 ～ 93.5 cm， ear length is 7.0～8.0 cm， ear grain weight is 1.7 ～ 2.6 g， 1 000 grain weight is 40.5 ～ 48.5 g， bulk density is 704 ～ 754 g/L. It is Stripe rust resistance； cold resistance is the grade 3； drought resistance is the grade 3， drought resistance index is 0.914. It is suitable to be grown the arid and semi-arid areas of precipitation is 350～450 mm， with an elevation is 1 700～2 380 m in Dingxi， Baiyin， Pingliang and Qingyang City of Gansu， Guyuan of Ningxia， Guide of Qinghai. It is a the cultivar with high quality cold resistant in the dryland.

S512.1

国家国际科技合作专项项目(2015DFK31120)。