Potato (Solanum tuberosum L.) is one of the most popular crops in the world. About 40 phytopathogenic viruses have been identified on potato in various countries and regions with various natural and climatic conditions. The situation is compounded by the fact that many viral infections persist and accumulate in wild and weedy plants. The viruses spread speed depends on the transmission method, the quickest virus transmission method being flying insects. We have identified 27 species of wild weeds from 13 botanical families. PLRV potato virus (potato leaf roll virus) and PVY (potato virus Y) were detected on the perennial sow thistle (Sonchus arvensis). On the wild camomile (Tripleurospermum inodorum) - PVS (potato virus S), belonging to the Flexiviriadae family, genus Carlavirus. The PVY virus was found on meadow clover (Trifolium pratense typus L.), wild spin (Chenopodium album L.), dooryard plantain (Plantago major L.), upland cress (Barbarea vulgaris W.T.Aiton), ragweed (Ambrosia artemisiifolia L). Potato mosaic group viruses were detected by PCR method in Lygus pratensis and Henosepilachna vigintioctomaculata. Thus, it was identified a pathobiocenosis that includes pathogens – PVY, PVS, PLRV, vectors – Lygus pratensis and Henosepilachna vigintioctomaculata and susceptible to infection organisms, which are wild weeds – Sonchus arvensis and Tripleurospermum inodorum, Trifolium pratense typus, Chenopodium album, Plantago major, Barbarea vulgaris, ambrosia artemisiifolia are virus reservoirs.
The bioresource collection of potato of the Common Use Center of the FSBSI “FSC of Agricultural Biotechnology of the Far east named after A. K. Chaika” was studied. Source varieties of various origins were selected. The objects of research were 300 varieties and hybrids of domestic and foreign selection. The purpose of the research was to identify valuable source material for breeding in the conditions of Primorsky Krai basing on a comprehensive study of the collection of potato varieties and hybrids. Blakhit, Vulkan, Debryansk, Emelya, Zhavoronok, Zarevo, Krasavitsa Bryanschiny, Lakomka, Mustang, Rosinka, Serpanok and Fermer were selected as the most efficient male parent forms. Variety sources that have economically valuable traits were included in targeted breeding. Promising hybrids were selected: Pri-11-31-24 Debryansk х Krasavitsa Bryanschiny, Pri-17-18-7 Lakomka х Fermer, Pri-08-11-1 Rosinka х Zhavoronok, Pri-12-4-11 Emelya х Krasavitsa Bryanschiny, Pri-12-35-4 Debryansk х Mustang, Pri-12-43-13 Blakhit х Mustang, Pri-11-12-5 Blakhit х Zarevo, Pri-11-14-25 Blakhit х Vulkan, Pri-12-47-15 Serpanok х Vulkan.
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