为突破西北、华北寒旱生态区胡麻种业更新换代、生产水平提升的发展瓶颈，甘肃省农业科学院作物研究所以自育优系 58为母本、 8858为父本，通过常规杂交育种与多年系谱选择，育成油用型胡麻新品种陇亚 19号。该品种在 2019 — 2020年甘肃省区域试验中平均折合产量 1 750.7 kg/hm2，较对照品种陇亚 13号增产 9.81%，增产点(次)占比 81.25%，居参试材料首位；同期全国区域试验平均折合产量 1 639.9 kg/hm2，较对照品种陇亚 10号增产 21.38%，位列参试材料第 2位。品质检测显示，含油量 375.1 g/kg，亚麻酸含量 548.0 g/kg，油酸 246.1 g/kg，脂肪酸组分搭配优质；田间鉴定表现为高抗枯萎病，发病率仅 3.1%。该品种株高 68.9 cm，生育期 108 d，单株果数 24.6个，千粒重 7.3 g，综合性状优良。陇亚 19号为油用型胡麻，花蓝籽褐，适宜在甘肃兰州、白银等西北、华北寒旱生态区同类区域春季种植。

To break the bottleneck restricting variety replacement and production improvementin in the flax seed industry de.velopment in the cold and arid ecological regions of Northwest and North China, the Institute of Crops, Gansu Academy of AgriculturalSciences, bred a new oil-type flax variety Longya 19 by crossing the self-bred elite line 58 as the female parent with line 8858 as themale parent, through conventional cross breeding and multi-year pedigree selection. In the Gansu provincial regional experiment from2019 to 2020, this variety achieved an average equivalent yield of 1 750.7 kg/ha, representing a 9.81% increase compared with thecontrol variety Longya 13, with 81.25% of the test sites showing yield gains, ranking first among all tested materials. In the national re.gional eperiment during the same period, it had an average equivalent yield of 1 639.9 kg/ha, a 21.83% increase over the control vari.ety Longya 10, ranking second among the tested materials. Quality detection indicated that it had an oil content of 375.1 g/kg, with lino.lenic acid content reaching 548.0 g/kg and oleic acid content at 246.1 g/kg, presenting an excellent fatty acid composition. Field identi.fication showed that it was highly resistant to fusarium wilt, with a disease incidence of only 3.1%. In terms of agronomic traits, this va.riety has a plant height of 68.9 cm, a growth period of 108 d, 24.6 capsules per plant and a 1000-seed weight of 7.3 g, boasting superi.or comprehensive agronomic characters. As an oil-type flax variety, Longya 19 features blue flowers and brown seeds. It is suitable forspring sowing in Lanzhou, Baiyin, and similar cold and arid ecological regions of Northwest and North China.

S565.9

国家特色油料产业技术体系( CARS-14-1-05)；甘肃省现代寒旱特色农业油料产业技术体系( GSARS-09)；中央引导地方科技发展资金( 25ZYJA002)。