Application of Grafting Method in Resistance Identification of Sweet Potato Virus Disease and Resistance Evaluation of Elite Sweet Potato [<i>Ipomoea batatas</i> (L.) Lam] Varieties
Hong Huang,
Haohao Han,
Yayun Lei,
Huanhuan Qiao,
Daobin Tang,
Yonghui Han,
Zhenpeng Deng,
Limin Mao,
Xuli Wu,
Kai Zhang,
Jichun Wang,
Changwen Lv
Affiliations
Hong Huang
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Haohao Han
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Yayun Lei
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Huanhuan Qiao
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Daobin Tang
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Yonghui Han
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Zhenpeng Deng
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Limin Mao
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Xuli Wu
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Kai Zhang
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Jichun Wang
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Changwen Lv
College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
Sweet potato virus disease (SPVD) is one of the main virus diseases in sweet potato [Ipomoea batatas (L.) Lam] that seriously affects the yield of sweet potato. Therefore, the establishment of a simple, rapid and effective method to detect SPVD is of great significance for the early warning and prevention of this disease. In this study, the experiment was carried out in two years to compare the grafting method and side grafting method for three sweet potato varieties, and the optimal grafting method was selected. After grafting with seedlings infected with SPVD, the symptomatic diagnosis and serological detection were performed in 86 host varieties, and the differences in SPVD resistance were determined by fluorescence quantitative PCR (qRT-PCR) and nitrocellulose membrane enzyme-linked immunosorbent assay (NCM-ELISA). The results showed that the survival rate of grafting by insertion method was significantly higher than that by side grafting method, and the disease resistance of different varieties to sweet potato virus disease was tested. The detection method established in this study can provide theoretical basis for identification and screening of resistant sweet potato varieties.
