Abstract：Gaocong No.1’is a new variety of welsh onion which is bred by years of systematic directional selection. The plant height is 145-165 cm with the fistular onion stalk of 75-85 cm. The trans diameter is 3 cm with 4-6 leave blades. The single plant weight is 0.3-0.5 kg. Its yield is over 90 t•hm-2. Its resistance to downy mildew is better than‘Yutiandacong’. Its resistance to alternaria leaf spot is similar to‘Yutiandacong’. It is resistant to lodging. Its sugar content is high and it is of good quality. It is good for raw eating. This variety has good taste and rich nutrient.‘Gaocong No.1’is suitable to be cultivated in Hebei, Northeast China and Inner Mongolia, etc.
