Abstract：‘Liaocong No.12’is a new Chinese welsh onion F1 hybrid developed by crossing‘nK13A’as
female parent and high generation inbred line‘TK20’as male parent. Its plant is neat with good orthostatic，
fast growing speed，and strong growth vigor. Its plant height is about 120 cm. The stem is compact，55 cm
in length and 3-4 cm in diameter. The number of functional leaves is 7-8. The leaf is bright green in color.
The average single plant weight is about 300 g. This variety has less crude fibre content，is juicy，crisp and
tender. It has strong spicy taste. It can yield about 82.5 t · hm-2. Its resistance to downy mildew，purpura and
virus disease is stronger than that of the contrast‘ Liaocong No.12’. It is suitable for cultivation in Shandong，
Hebei，Jilin and Liaoning Provinces，etc.
