白菜型冬油菜新品种天油5号选育报告

冬油菜新品种天油5号（系谱号986—2-1）是天水市农业科学研究所以白菜型冬油菜品系“St40—1”为母本、引进的双低白菜型春油菜品种“网8”为父本杂交选育而成。在2003—2005年区试中，平均产量2668．70kg／hm^2，较对照品种天油1号增产13．81％，最高单产达2475．00kg／hm^2。该品系表现优势强，植株繁茂，根系发达，高产、稳产，适应性广，含油量41．12％、芥酸29．78％、硫甙93．0μmol／g。适宜在甘肃省东部和中部海拔2000m以下地区推广种植。

Breeding Report of a New Winter Rape Cultivar (B campestris L.) Tianyou 5 with Resistance to Cold and High-yield

986-2-1（B campestris L. ）,a new winter rape line was bred by St40-1 （B campestris L. ） as females parent and a spring rape of Wang 8 from Anhui Institute of Agricuhral Sciencse as mals parent by Tianshui Institute of Agricultral Sciencse. In the regional test during 2003-2005,the average yield was 2 668. 71 kg/hm^2,and 13.81% bighter than of the check Tianyou 1 ,the yield was 2 475.0 kg/hm^2 which was the highest among all lines. The cuhivar showed hybridization superionrity, with plant and flourish roots,and possessed of high-yield and extensive adaptability. The result also indicated that seed were respectively 41.12%, 29. 78% and 93.0 μmol/g of oil,erucic and glucosinlate content. It is suitable＇to cultivate in the middle region in Gansu province.