To screen for Tiwei watermelon rootstock varieties with good grafting affinity,good symbiosis,high survival rate,and strong disease resistance,Zaojia 8424 variety was used as a control.There are three types of rootstocks:gourd type,pumpkin type,and wild type,field experiments were conducted to determine the survival rate,disease resistance,yield and soluble sugar content of grafted seedlings after harvest.The results showed that there was a great difference in the survival rate of grafted watermelon seedlings among different rootstocks.The 9 grafting combinations had a good comprehensive character,the survival rate was 98.5%,and the grafting affinity was good,the incidence of fusarium wilt was 1.7%,the total 667 m2 yield was 4303.70 kg,the central sugar content was 12.2°,the edge sugar content was 9.2°,the hollow rate was 0.The rootstock Sizhuang 7 is suitable for grafting of Tiwei watermelon,and can be recommended as a grafted rootstock for promotion in Cixi City.
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