Abstract: ‘Xinmi No.42’is a new F₁ hybrid Hami melon variety bred by taking inbred line 2001-7-5 as female parent and inbred line 2001-30-3 as male parent．It is a mid maturing variety．The growing period is about 90 days．The fruit is long oval-shaped，and the shape index is 1.6．Its center soluble solid is above 14 %．The average fruit weight is about 3.5 kg．In open fields，its average yield is about 42 t·hm^-2．It has strong resistance to powdery mildew in the field．It is suitable for cultivation in open fields in Hami melon production areas in China．

摘要： 新蜜42号是以自交系2001-7-5为母本、自交系2001-30-3为父本配制而成的哈密瓜一代杂种。中熟，生育期90 d（天）左右。植株生长势较强，坐果整齐。果实长椭圆形，果形指数1.6，皮色黄，网纹较密，肉色浅橘红，肉质松脆，中心可溶性固形物含量14 ％以上，平均单瓜质量3.5 kg左右，露地栽培每667 m²产量2 800 kg左右。田间表现对白粉病抗性强。适于我国哈密瓜产区露地栽培。

关键词: 哈密瓜, 新蜜42号, 一代杂种