Abstract: Jinyou No.2 is F 1 crossed the inbred line M 8 and inbred line P 2.M 8 which was obtained initially from decedents of 60 Coγ irradiating dry seeds at the dose of 23.22C·kg -1 . The hybrid is early maturing,high yielding and high disease resistance to Downy mildew,Powdery mildew,Fusarium wilt. It takes about 70 days from sowing to the first harvest. Its total yield was 82.5t·hm -2 ,19.3% 26.4% higher than that of Changchun Mici. It is cold tolerant in the early growing period and can grow ...

摘要： 在对近３００份黄瓜品种资源进行筛选、鉴定的基础上，从１９８７年开始利用２３．２２Ｃ·ｋｇ－１６０Ｃｏγ射线辐射处理具某些优良特性的自交系干种子，并在其变异后代群体中分选出主要性状均能稳定遗传的优系材料辐Ｍ８，用其作亲本与另一高代自交系配制出适于冬春茬日光温室栽培的一代杂种津优２号。该品种植株生长势强、熟性早、产量高，从播种到始收７０ｄ（天）左右，每６６７ｍ２产黄瓜５５００ｋｇ左右，比对照长春密刺增加１９．３％～２６．４％，对霜霉病、白粉病、枯萎病有较强抗性；耐低温、弱光能力较强，前期１０～１３℃夜温及１００００ｌｘ弱光条件下可正常生长。瓜条长３２ｃｍ，长棒形，深绿色，刺瘤明显，白刺，商品性好，单瓜质量２００ｇ，顺直匀称，口感甜脆。

关键词: 黄瓜, 辐射诱变, 津优2号, 一代杂种