北方小葱新品种‘鲜绿2号’的选育

Breeding of a new variety of the north spring onion‘Xianlü No.2’

‘鲜绿2号’小葱是以雄性不育系‘15-8A’为母本、自交系‘09-3-15’为父本选育而成的杂交1代品种。该品种植株高度55~65 cm,假茎长度18~20 cm,叶色深绿,叶片上冲,管状叶粗度0.7 cm,商品性好;微辣而甜,品质优良;长势快,产量高,667 m^2产量可达4000 kg;夏秋季播后65 d即可收获,可割茬(或带根)收获,田间对霜霉病、紫斑病、灰霉病抗性强。生长适温28℃左右,适宜华北、东北等地区春秋大棚和露地种植。

‘Xianlü No.2’is a new hybrid of spring onion developed by crossing male sterile line‘15-8’as female parent and inbred line‘09-3-15’as male parent.The plant height is 56-67 cm.The pseudostem length is 18-20 cm.The leaf is dark green and orthostatic.The tubular leaves are 0.7 cm in diameter.It tastes a little spicy and sweet.It has many good characters such as high yield,good quality,disease resistance and fast growth.The average yield is 4000 kg per 667 m^2.The whole growth period is 65 days in summer and autumn.It can be harvested by cutting stubble or with roots.It has good resistance to downy mildew,purple spot and gray mold.The suitable temperature for its growth is about 28℃.It is suitable for greenhouses and open field cultivation in north China and northeast China in spring and autumn.