Abstract：Yongtian No.5’is a F1 hybrid melon variety developed by crossing inbred line YW10-3 as female parent and inbred line MNH04-6 as male parent. It is of early maturity with crisp flesh．The fruit is ellipse in shape with single weight of about 1.6 kg．The rind is white and netted dilutedly．Its flesh is orange in color．It is of high edible quality with crisp and refined taste．The brix in the central part of its fruit is over 15%．The fruit developing period is about 36 days and 33 days in spring and summer，respectively．The whole developing period is about 94 days．It has higher resistance to powdery mildew and gummy stem blight than‘Dongfangmi No.1’．Its average yield is 30 t?hm-2．It is suitable for facilities cultivation in spring and fall．The finger printing of‘Yongtian No.5’is established from 4 RAPD markers，which could be used to identify the purity of this cultivar．
