甘陕宁毗邻地区寒旱气候频发，又是冬小麦适种区，亟须培育出高产、多抗、广适小麦新品种。冬小麦新品种陇育12号以陇育5号为母本、太13907为父本进行杂交，采用系谱法选育而成。2017 — 2019年参加甘肃省陇东片冬小麦区域试验，2 a 14点(次)平均折合产量5 170.50 kg/hm2，比对照品种陇育4号增产12.20%。2019 — 2020年度参加甘肃省陇东片冬小麦生产试验，平均折合产量4 300.35 kg/hm2，比对照品种陇育4号增产6.30%。该品种冬性，生育期274 d，株高97.5 cm。穗型近纺锤形，长直芒、白壳，红粒、角质。穗数528.00万穗/hm2，穗粒数35粒，千粒重35.15 g。苗期对条锈混合菌表现免疫(0)，成株期对供试小种及混合菌均表现中感，但严重度和普遍率比较低，具有慢条锈特性。籽粒含粗蛋白质(干基)148.9 g/kg、湿面筋(14%湿基)347 g/kg，吸水率587 mL/kg，容重823 g/L，面团稳定时间2.0 min。适宜在甘肃省陇东庆阳、平凉及宁夏固原等地山塬旱地及同类生态区种植。

The Gansu-Shaanxi-Ningxia border region frequently experiences cold and arid climates, yet it is exceptionally suitable for the cultivation of winter wheat. There is an urgent need to develop new wheat varieties that are high-yielding, resistant to multiple stresses, and widely adaptable. Longyu 12 is a new variety of drought-resistant, high-yielding, and stable winter wheat that was developed in 2009 through a crossbreeding program. Using Longyu 5, as the female parent and Tai 13907 as the male parent. The breeding was conducted using the pedigree method. From 2017 to 2019, it participated in the regional trials of winter wheat in the Longdong area of Gansu Province, with an average yield of 5 170.50 kg/ha across 14 sites in 2a, which was 12.20% higher than the control variety Longyu 4. In the 2019 — 2020 production trial in the Longdong area of Gansu Province, the average yield was 4 300.35 kg/ha, 6.30% higher than the control variety Longyu 4. This new variety has a winter growth habit with a growth period of 274 days. It has an average height of 97.5 cm, with a nearly spindle-shaped form, long straight awns, white husk, red grains, and vitreous endosperm. It produces 5.28 million ears per hectare, with 35 grains per ear and a thousand-grain weight of 35.15 g. At the seedling stage, it shows immunity to a mix of fungi(0). While at the adult plant stage, it exhibits moderate susceptibility to the tested isolates and mixed fungi, but with lower severity and prevalence rates, indicating slow rusting characteristics. The grain contains 148.9 g/kg of crude protein (dry basis), 347 g/kg of wet gluten (14% moisture basis), a water absorption rate of 587 mL/kg, a bulk density of 823 g/L, and a dough stability time of 2.0 minutes. It is suitable for planting in the hilly and arid areas of Qingyang, Pingliang in Gansu Province, and Guyuan in Ningxia, as well as similar ecological zones.

S512.1

陇东旱地作物种质改良及产业化协同创新中心资助项目(甘发改高技〔2017〕1162号)；甘肃省旱地冬小麦种质创新与应用工程研究中心资助项目(甘教技〔2019〕23号)；甘肃省自然科学基金项目(21JR7RM191)；甘肃省重点研发项目(22YFM126)。