Tereshonkova T.A., Bagrov R.A., Fomicheva M.G.,Tenkova N.F., Titova E.V., Egorova A.A.
Under conditions of the increasing infectious load on the tomato crop due to the emergence of new diseases and new physiological races of traditional pathogens, the importance of creating and growing heterotic hybrids with complex resistance is increasing. The harmfulness of new insect pests of tomato culture is also increasing. In terms of harmfulness, the tomato mining moth (Tuta absoluta) and the western flower thrips (Frankliniella occidentalis) take the first place, which, in addition to causing direct damage to the culture, is a carrier of viral diseases, including Tomato spotted wilt virus. The started breeding program for the field resistance of tomato to thrips made it possible for the period 2020–2021 to identify 8 sources of resistance among the samples of various commodity groups. As a result of 20 years of selection, commercial hybrids with different sets of resistance genes have been created. The goals of modern breeding include breeding material assessment and selection for the presence of resistance genes in genotypes by PCR diagnostics method, as well as control of resistance by testing the material under infectious backgrounds or artificial infection inoculation. Another important step is the control of commercial seed lots for the presence of resistance genes. The results of PCR analysis of commercial hybrids for 4 resistance genes in combination with the test of field resistance to Cladosporium fulvum under condition of strong long-term infectious background are given in tabular form. These results show that in almost all product groups there are hybrids with resistance to ToMV, in combination with other resistances, including the relative resistance to late blight in the F1 Iziyaschniy (Ph2\Ph2) hybrid. Currently, the progress is being made towards expanding the number of genes for PCR analysis of breeding material.
Key words: hybrids, tomato, resistance, VToM, Cladosporium (Fulvia) fulvum, Meloidogyne sp., Fusarium wilting, western flower thrips.
Tereshonkova T.A. (author for correspondence), Cand. Sci. (Agr.), head of laboratory of immunity and breeding of Solanaceae, ARRIVG-branch of FSBSI FSVC, tomato breeder of Poisk Company. E-mail: email@example.com
Bagrov R.A., Cand. Sci. (Agr.), senior research fellow, laboratory of immunity and breeding of Solanaceae, ARRIVG-branch of FSBSI FSVC. E-mail: firstname.lastname@example.org
Fomicheva M.G., Cand. Sci. (Biol.), research fellow, FSBSI FSVC. E-mail: email@example.com
Titova E.V., research fellow, laboratory of immunity and breeding of Solanaceae, ARRIVG-branch of FSBSI FSVC. E-mail: firstname.lastname@example.org
Tenkova N.F., research fellow, laboratory of immunity and breeding of Solanaceae, ARRIVG-branch of FSBSI FSVC. E-mail: email@example.com
Egorova A.A., Cand. Sci. (Agr.), senior research fellow, laboratory of immunity and breeding of Solanaceae, ARRIVG-branch of FSBSI FSVC. E-mail: firstname.lastname@example.org
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For citing: Tomato hybrids with complex resistance for ground greenhouses. T.A. Tereshonkova, R.A. Bagrov, M.G. Fomicheva, N.F. Tenkova, E.V. Titova, A.A. Egorova. Potato and vegetables. 2021. No11. Pp. 34-37. https://doi.org/10.25630/PAV.2021.34.51.006 (In Russ.).