Breeding of a new melon cultivar Yinyu No.3

GU Zhongbin; XU Fengqing; WANG Xinjun

doi:10.16861/j.cnki.zggc.2025.0362

Abstract：Yinyu No.3 is a new cultivar of thick-skinned melon bred from the cross of M503 as female parent and M519 as the male parent.The plant grows moderately,with a compact shape and medium maturity.Under open field cultivation in Wuwei city,Gansu province,in the spring,the whole growth period is 116 days,and the fruit development period is 40 days.The female flowers are bisexual,with first female flower located at the 8th node,and the interval node position of female flower occurrence is 4 nodes;both the main and lateral shoots can bear fruit,with medium difficulty in fruit setting.The oblong fruit has a thick rind with netted skin;the skin has a yellow base color with high hardness,the white flesh is soft with strong sweet taste;the flesh thickness is 5.5 cm;the surface of the fruit is fully netted,with prominent moderate net-ting,and the fruit stalk is difficult to detach after maturity.The soluble solids content in the center is 17.6%,and 12.8%at the edge.It is highly resistant to powdery mildew,moderately resistant to downy mildew,and moderately resistant to stem rot.The average single fruit mass is 2.3 kg,and the average yield per 667 m2 is about 4776.5 kg.It is suitable for cultiva-tion in the spring in the northwest ecological zone of Xinjiang,Inner Mongolia,Gansu,and Ningxia.