大葱新品种青杂2号的选育

A New Welsh Onion Variety——‘Qingza No.2’

青杂2号是以雄性不育系08青A6-1为母本，自交系06-25-12-3为父本，利用三系杂交育种技术培育出的大葱杂交新品种。整齐度高，生长速度快；叶片直立，叶色深绿，管状叶6枚，叶面蜡粉层厚，抗风、抗倒力强。葱白长55～70 cm，葱白粗4.0～4.5 cm，单株质量0.45～0.55 kg；质地紧密，脆嫩，味甜；一般667 m2产量6500 kg以上；田间对大葱紫斑病、病毒病、霜霉病的抗性强于对照寒丰巨葱，抗寒力强，耐热；可一年四季栽培，是作为青葱栽培的理想品种。适宜河北、山东、河南、辽宁等地大面积种植。

‘Qingza No.2’is a three-line hybrid welsh onion variety,developed by crossing male sterile single 08qingA6-1 with inbred line 06-25-12-3. The plant grows with high speed and uniformity. Its leaves are erect and dark green in color. It has 6 tubular shaped leaves with thick wax powder layer on its surface. It is resistant to lodging. The stalk is 55-70 cm in length and 4.0-4.5 cm in diameter. The single plant weight is 0.45-0.55 kg. The scallion stalk is dense in texture,crisp,tender and tastes sweet. The yield is over 97.5 t·hm-2. Its resistance to alternaria leaf spot,virus disease and downy mildew is stronger than that of the CK‘Hanfengjucong’. It has strong resistance to cold and tolerance to heat. It can be planted all year round and is an ideal variety as green onion. It is suitable for cultivation in large areas of Hebei,Shandong,Henan,Liaoning Provinces.