天油15号为天水市农业科学研究所以天油2号为母本、秦油4号为父本杂交，后代经过轮回选择而育成的白菜型冬油菜新品种。在2014 — 2016年甘肃省冬油菜区域试验中，2 a 16点(次)折合平均产量1 990.05 kg/hm2，较对照品种天油4号增产6.07%。籽粒芥酸含量41.60%，硫苷含量136.71 μmol/g(饼)，含油量41.52%。抗寒耐旱，高产稳产，适宜于甘肃省中东部干旱、半干旱、二阴山区种植。

Tianyou 15 is a new winter rapeseed (Brassica rapa L.) cultivar， bred by Tianshui Institute of Agricultural Science, selected from the combination of Tianyou 2 as female parent and Qinyou 4 as male parent. In 2014 — 2016， the average yield in 2 a 16 sites (times) was 1 990.05 kg/hm2， 6.07% higher than the control Tianyou 4 in Gansu Winter Rapeseed Regional Trial. The seeds erucic acid content is 41.60%， glucosinolate content is 136.71 μmol/g and oil content is 41.52%. The cultivar has a strong cold resistance and drought tolerance， high and stable yield. It is suitable to be grown in arid，semi-arid，semi-arid mountain region in the Central and eastern of Gansu province.

S565.4

国家重点研发计划项目“高寒区油菜优异种质资源的发掘与利用”(2016YFD0100202-22)； 天水市科技支撑计划项目“甘肃省半干旱山区优质油菜种质资源创新利用及栽培技术研究”。