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Inheritance of Tomato Necrotic Ring Virus Resistance in Capsicum annuum



Inheritance of Tomato Necrotic Ring Virus Resistance in Capsicum annuum



Journal of Agricultural Science 5(2)



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 Capsicumannuum 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 BCS and BCR indicated that the inheritance of the resistance fits a single recessive gene model.

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Accession: 036731277

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DOI: 10.5539/jas.v5n2p129


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