1Henan Jiuxing Biotechnology Research Institute Co.，Ltd.，Pingdingshan 467241，Henan，China；2Pingdingshan Horticultural Science Research Institute，Pingdingshan 467001，Henan，China；3Henan City Construction University，Pingdingshan 467036，Henan，China；4China Agricultural University，Beijing 100083，China
Abstract：‘Jiuxing No.31’is a new Chinese chives variety of developed by crossing favor strain‘96-13-32’of‘Tianjinqingjiu’as female parent and favor strain‘19-5-6’of‘92-1’as male parent through sexual hybridization and systematic breeding．It has strong upright growth，and early spring regreening．The average plant height is of 49.0 cm．Its average pseudostems is 10.1 cm in length，and 0.6 cm in width．Its leaf blades are dark green in color with little wax powder．The leaf blades are of long and wide stripe shape．Its average leaves are 38.9 cm in length，and 0.8 cm in width．The average single plant has 5 functional leaves，and weight is 8.7 g．It has strong tillering ability，and will not go dormant in winter．It is strongly resistant to cold．Its resistance to gray mold is stronger than that of the contrast‘791’．Its protein content is 1.82%，β-carotene content is 9.10 μg·g-1，VC content is 216.0 mg·kg-1，and iron content is 71.1 mg·kg-1．Every year，it can be harvested for 6-7 times，and yield about 187.5 t·hm-2．It is suitable for planting in Henan Province and similar ecological conditions areas．
