alexa QTLs involved in the restriction of cucumber mosaic virus (CMV) long-distance movement in pepper.
Agri and Aquaculture

Agri and Aquaculture

Agrotechnology

Author(s): Caranta C, Pflieger S, Lefebvre V, Daubze AM, Thabuis A,

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Abstract Partial restriction of cucumber mosaic virus (CMV) long-distance movement originating from the Capsicum annuum inbred line 'Vania' was assessed in a doubled-haploid progeny using two screening methods: the first allowed one to assess the resistance of adult plants decapitated above the fourth leaf and inoculated on the third leaf using a common CMV strain, and the second allowed one to assess CMV resistance to long-distance movement on seedlings inoculated using an atypical CMV strain. For both resistance tests, the behavior of the F(1) hybrid between 'Vania' and the susceptible line 'H3' indicated that partial resistance is inherited as a dominant trait. Phenotypic data from the two screening methods were correlated but the one performed on seedlings was much more severe. A subset of 184 molecular markers well-distributed over the pepper genome was selected for QTL mapping using the composite interval mapping (CIM) method. A total of seven genomic regions, including one major effect and several minor effect QTLs, were shown to be associated with partial restriction of CMV long-distance movement. These results are compared with those already obtained in pepper and also in other solanaceous crops, potato and tomato. This article was published in Theor Appl Genet and referenced in Agrotechnology

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