Inheritance of Tomato Necrotic Ring Virus Resistance in Capsicum annuum

Abstract

Tomato necrotic ring virus (TNRV) is a newly identified species of tospovirus in Thailand. The virus is widely spread and causes severe yield losses of vegetable crops such as tomato and pepper. Chemical control of the vector, thrips species, is very difficult, and the introduction of virus resistance would be a better approach to manage the disease.. In a previous study, two related Capsicum annuum lines, PY-6423 and PY-6424, were identified, which conferred medium resistance to TNRV. These two resistant lines were employed in an inheritance study in order to determine the number of genes controlling resistance in C. annuum. Therefore, the susceptible parent Early California wonder (ECW) was crossed with the resistant lines and F1 progenies were backcrossed to the susceptible and resistant parents as well as F2 were made. Evaluation of the F1, F2 and BC S and BC R indicated that the inheritance of the resistance fits a single recessive gene model.

Screening Capsicum Accessions for Tomato Necrotic Ringspot Virus Resistance

“…The inheritance of resistance from these accessions was studied. The study revealed tomato necrotic ringspot virus resistance was controlled by a single recessive gene (Puangmalai et al, 2013).…”

Genetic analysis of resistance to watermelon bud necrosis orthotospovirus in watermelon [Citrullus lanatus (Thunb.) Matsum & Nakai]

“…Resistance to TSWV (Black, Hobbs, & Kammerlohr, ; Boiteux & de Avila, ; Moury, Palloix, Selassie, & Marchoux, ) and CaCV (Persley, Sharman, Mcgrath, & Garland, ) in pepper is governed by single dominant genes and is expressed as hypersensitive response. Inheritance to tomato necrotic ring orthotospovirus resistance (TNRV) in pepper is controlled by single recessive gene (Puangmalai, Potapohn, Akarapisarn, & Pascha, ). Some of the genes identified to confer resistance against orthotospoviruses are as follows: Swa1 , Swb1 (Finlay, ), Sw‐5 (Stevens et al., ), Sw‐6 (Rosello et al., ) and Sw‐7 (Stevens et al., ) are dominant genes, while sw2 , sw3 and sw4 (Finlay, ) are recessive genes conferring resistance to TSWV in tomato.…”

“…Inheritance to tomato necrotic ring orthotospovirus resistance (TNRV) in pepper is controlled by single recessive gene (Puangmalai, Potapohn, Akarapisarn, & Pascha, 2013). Some of the genes identified to confer resistance against orthotospoviruses are as follows: Swa1, Swb1 (Finlay, 1953), Sw-5 (Stevens et al, 1992), Sw-6 (Rosello et al, 1999) and Sw-7 (Stevens et al, 2006) are dominant genes, while sw2, sw3 and sw4 (Finlay, 1953) are recessive genes conferring resistance to TSWV in tomato.…”

Effects ofTomato zonate spot virusInfection on the Development and Reproduction of Its VectorFrankliniella occidentalis(Thysanoptera: Thripidae)

“…Palabras Clave: Virus de la Mancha Zonada del Tomate (VMZT) , trips occidental de las flores, desarrollo, reproducción Tospoviruses have received international attention because they have caused major crop losses throughout the world in recent years Pappu et al 2009;Puangmalai et al 2013;Seepiban et al 2011). Parrella et al (2003) reported that TSWV can infect more than 1,090 plant species and is one of the most economically important plant viruses in the world.…”