Preliminary Screening of Excellent Scion Varieties Grafted on Litchi cv. Shuangjianyuhebao
The grafting compatibility of 17 scions top grafted on Shuangjianyuhebao was evaluated by comparing the shape of grafting union, appearance of grafting union epidermis, survival rate of scion, leaf mineral element contents. And the fruit yield and quality of different scions after top grafting were compared. The results showed that Shuangjianyuhebao rootstock grafted with Feizixiao, Mili and Maguili displayed good grafting compatibility with swollen graft union, complete healing, smooth epidermis, and high leaf mineral element contents. The Shuangjianyuhebao grafted with Maguili, Mili exhibited higher fruit yield, while that grafted with Wuheli, Feizixiao,Lingfengnuo scions displayed good fruit quality. Taking all into account, it is suggested that Feizixiao, Mili and Maguili are the suitable scions of top grafting for Shuangjianyuhebao, and it needs further analyzation to confirm that whether Jizuili, Miaozhongnuo, Jingganghongnuo, Wuheli, Lingshanxiangli, Yingshanhong, Guinuo and Dadingxiang are good scions for Shuangjianyuhebao. The results provide guidance for selecting suitable scion in optimizing the varieties construction of Shuangjianyuhebao.