Abstract: Mianyou 93 is a three-line double-low （low erucic acid and glucosinolate） rapeseed (Brassica napus L.) variety. It features outstanding advantages such as high yield, high oil content, suitability for mechanical harvesting, and dual-use for oil and vegetable purposes. It is suitable for autumn planting in winter rapeseed regions of Sichuan Province in plain-hilly ecological zones. From 2021 to 2023, it participated in the Tianfu Rapeseed High-Yield Trials in Sichuan Province. The two-year average yield was 3 344.4 kg/hm², representing an 11.16% yield increase over the control variety Deyou 6. It showed yield increase at 15 of 16 trial sites, with a yield-increase rate of 93.75%. The average oil content of its seeds was 45.8%, erucic acid content was 0.1%, and glucosinolate content was 20.12 μmol/g. Its rapeseed shoots were rich in nutrients, with vitamin C content of 1 210 mg/kg, calcium content of 1 620 mg/kg, zinc content of 10.6 mg/kg, soluble sugar content of 2.76%, and total amino acid content of 4.45 g per 100 g. This variety was registered as a non-major crop variety in China in 2024. Its cultivation techniques were also introduced.

Key words: rapeseed (Brassica napus L.), Mianyou 93, dual-use for oil and vegetable, high yield, high oil content, suitability for mechanical harvesting, breeding, cultivation techniques