油葵具有耐盐碱、耐瘠薄、适应性广等特性，是生物治理及开发盐碱地的首选作物之一，通过油葵优良品种选育，对扩大盐碱地利用及保障粮油安全具有重要的现实性意义。以选育抗盐碱油葵新品种为目标，以自育的细胞质雄性不育系FH030A为母本、恢复系JY009R为父本选育出了抗盐碱油葵杂交种YDF309。2020 — 2021年参加多点区域试验，2 a 16点(次)平均折合产量为3 989.70 kg/hm2，较对照品种陇葵杂2号增产12.86%。2021 — 2022年参加多点生产试验，2 a 16点(次)平均折合产量为4 159.12 kg/hm2，较对照品种陇葵杂2号增产16.32%。该品种生育期101 d，平均株高166 cm，茎粗2.63 cm，叶片数28片，盘形平，花盘直径20.31 cm，花盘倾斜度4级，百粒重7.20 g，结实率85.40%，出仁率74.0%。适宜在甘肃省酒泉市、武威市、白银市和内蒙古巴彦淖尔市及其他类似生态区种植。

Oil-flower has the characteristics of salt-alkali, barren resistance, and wide adaptability. It is one of the preferred crops for biological governance and development of the saline-alkali lands. Breeding high-quality varieties of oil sunflower plays a vital role in expanding land use and ensuring grain and oil security. A new salt-tolerant hybrid variety, YDF309, was developed using the self-bred cytoplasmic male sterile line FH030A as the female parent and the restorer line JY009R as the male parent. From 2020 to 2021, YDF309 was tested in multi-location regional experiments and achieved an average yield of 3 989.70 kg/ha across 16 sites over two years, 12.86% higher than the control variety Longkuiza 2. From 2021 to 2022, multi-site production experiments showed an average yield of 4 159.12 kg/ha, 16.32% higher than the control variety Longkuiza 2. This variety has a growth period of 101 days, an average plant height of 166 cm, stem diameter of 2.63 cm, 28 leaves per plant, flat disc shape, capitulum diameter of 20.31 cm, disc inclination grade of 4, 100-seed weight of 7.20 g, seed-setting rate of 85.40%, and kernel yield rate of 74.0%. It is suitable for cultivation in Jiuquan, Wuwei, Baiyin(Gansu Province), Bayannur (Inner Mongolia), and other similar ecological areas.

S565.5

甘肃省农业科学院重点研发计划(2025GAAS25、 2025GAAS29)；国家重点研发计划(2024YFD1600103)；兵团科技创新人才项目(2023BC07-06)；甘肃省产业技术体系。