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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (11): 2211-2226.doi: 10.16420/j.issn.0513-353x.2020-0913

• Original article • Previous Articles     Next Articles

Establishment and Application of a Tomato KASP Genotyping System Based on Five Disease Resistance Genes

WANG Peng1, TIAN Zhejuan1, KANG Chen1, LI Yadong1, WANG Hongle2, YANG Chaosha1, MANG Guangwei2, KANG Liang2, FAN Qingjie2, WU Zhiming1,*()   

  1. 1Institute of Cash Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,China
    2Chengde Academy of Agriculture and Forestry Sciences,Chengde,Hebei 067055,China
  • Received:2021-05-24 Revised:2021-08-06 Published:2021-12-02
  • Contact: WU Zhiming E-mail:zhiming71@126.com

Abstract:

Kompetitive allele specific PCR(KASP)is a novel genotyping tool based on single nucleotide polymorphism(SNP). An efficient and economical resistance gene KASP genotyping method is very useful in tomato breeding program. In this study,KASP primer pairs of five tomato disease resistance genes were used to establish a KASP genotyping system,among them the primer sets for tomato yellow leaf curl virus(TYLCV)resistance gene Ty-1 and root-knot nematode(RKN)resistance gene Mi-1 were designed in this study,and KASP primers of tomato mosaic virus(ToMV)resistance gene Tm-22,tomato spotted wilt virus(TSWV)resistance gene Sw-5 and fusarium crown and root rot(FCRR)resistance gene Frl were from previous publications. By using tomato germplasms containing different disease resistance genes,the KASP genotyping system was optimized for its template reaction volume,DNA concentration,primer concentration and the number of PCR cycles. Detection results using the optimized KASP method were consistent with the PCR detection results of molecular markers of five disease resistance genes. The KASP genotyping system developed in this study not only can save cost,but also possesses high accuracy and stability. Therefore,it can be widely used in identification of tomato disease resistance genes,genetic diversity analysis and gene mapping,which provides technical supports and theoretical basis for the tomato molecular marker-assisted disease resistance identification,rapid screening and utilization of resistance germplasms for tomato breeding.

Key words: tomato, germplasm, KASP, genotyping, Ty-1, Mi-1, Tm-22, Sw-5, Frl

CLC Number: