Other strains occur overseas. Potato virus Y (PVY), a member of the Potyvirus genus (Potyviridae family), is the most economically important virus of potato crops, affecting tuber yield and quality and resulting in losses … Table 1. Potato virus Y (PVY) is an important plant pathogen infecting solanaceous crops, causing significant losses to global potato and tobacco production. Mineral oils have been used overseas to limit PVY spread. Virus diseases are of high concern in the cultivation of seed potatoes. Don’t plant the problem! Tubers from infected plants are often small and can have necrotic or dead rings on the skin. University of Maine WA certified and registered seed potatoes with Rating 1 and Rating 2 have a zero tolerance for PVY. Spray only when scouting indicates aphid populations are above threshold levels. Potato virus Y (PVY) is an aphid-borne virus that causes yield losses and tuber quality defects in commercial potato crops. These plants are often found growing within crops, on roadside verges and along fencelines. Potato virus Y (PVY) was first recognized in 1931 as an aphid-transmitted member within a group of viruses associated with potato degeneration, a disorder known since the eighteenth century. In seed crops PVY infection increases the risk of the seed lot being downgraded or rejected from certification. Evaluation of losses caused in the potato variety ICA Purace by potato virus X, potato virus Y and potato leaf roll virus. Potato virus Y (PVY; genus Potyvirus, family Potyviridae) is a major virus pathogen of potatoes (Solanum tuberosum L. subsp. PVY infection of potato plants results in a variety of symptoms depending on the viral strain.The mildest of these symptoms is production loss, but the most detrimental is 'potato … Symptoms of infection vary with cultivar, plant age, environmental conditions and PVY strain. USDA Agricultural Research Service – Wapato, If you have a disability and are having trouble accessing information on this website or need materials in an alternate format, contactÂ, Summary of Potato Tuber Necrotic Virus (PVY, PMTV, TRV) Management Strategies, PMTV and Powdery Scab – Symptoms and Diagnosis, TRV and Stubby Root Nematodes – Symptoms and Diagnosis, % Disease Estimation and Sample Size Tools, Certified Seed Purchase – 10 Questions to Ask, Project Team – Working Groups and Contact Information, Cleaning and Disinfecting Potato Equipment and Storage Facilities, Management of Potato Virus Y (PVY) in Wisconsin Seed Production, NEW: Certified Seed Purchase – 10 Questions to Ask, NEW: % Disease Estimation and Sample Size Tools. Plant new crops upwind from older crops – there is less infection upwind from infection sources as aphids can be blown along with the wind. Be aware that the PHT only provides an estimate of the virus in a seed lot and that this estimate has an associated standard deviation that is not typically reported. * PVY resistant varieties, plant did not become infected after inoculation Destroy weed hosts throughout the season. All cutting and planting equipment should be disinfested before coming in contact with seed as well as between seed lots.  PVY can be mechanically transmitted from an infected plant to a healthy plant via plant sap on hands and tools.  Several commercial disinfectants are available.  Make sure these are allowable for use in your growing region. For more information please see Cleaning and Disinfecting Potato Equipment and Storage Facilities.  Border crops can “cleanse” PVY from aphid sytlets (mouthparts) before the aphids find the potatoes. Potato Virus Y (PVY; type member of genus Potyvirus) is one of the most damaging potato viruses affecting crop yields and tuber quality. If the aphid then moves to a healthy plant and begins to feed (for 1-2 seconds) the virus is released and transferred to the healthy plant leading to infection. Oleh karena itu, diperlukan upaya pengelolaan tanaman untuk memperoleh pertanaman sesuai dengan standar produksi benih kentang bersertifikat. Plant immune cultivars whenever possible and avoid planting tolerant cultivars in close proximity to fields with susceptible cultivars. The virus exists as a complex of strains with PVY O and PVY N being parents to numerous emerging recombinant strains, several of which have become prevalent in potato … USDA Agricultural Research Service - Aberdeen Detection of potato virus Y in early-harvested potato tubers by cDNA hybridization and three modifications of ELISA. Potato … Thank you, your email will be added to the mailing list once you click on the link in the confirmation email. In tobacco, yield … akibat infeksi beberapa virus kentang di Indonesia sekitar 25–90% oleh Potato leaf roll virus (PLRV), dan 5–80% oleh serangan PVX, PVY dan PVS (Duriat et al. As with other potato viruses, the best management method for PVY is to avoid introduction of the virus to your fields. King Edward potato plant infected with PVY showing mild leaf mottle and distortion, Necrotic rings on potato tubers from PVY-infected Nadine plants, Volunteer or self-sown potatoes can be a source of PVY. Remove and destroy old potato crops immediately after the final harvest to minimise virus spread to new crops. Virus mosaik tembakau (Tobacco mosaic virus, TMV) adalah virus yang menyebabkan penyakit pada tembakau dan tumbuhan anggota suku terung-terungan (Solanaceae) lain. There are three main strategies for managing PVY in potatoes. Potato Virus Y (PVY) – Management Effective management of PVY is requiring changes to seed certification procedures and grower practices. Bercak cincin nekrotik membuat kentang tidak … Please contact site owner for help. Potato virus Y Wilga MV99 Spiraea potyvirus Disclaimer: The NCBI taxonomy database is not an authoritative source for nomenclature or classification - please consult the relevant scientific literature … Employ good hygiene practices. The addition of other practices in combination will provide added control. … Potato Virus Y (PVY) is a pathogenic virus of potatoes. Ensure these materials do not originate from potato debris or cull piles. In severe cases leaf drop can occur. In recent years, growers have been reporting increased losses in potato and tobacco across the valley, the state, and the nation, due to Potato Virus Y (PVY). Obtain PHT estimates based on lab testing vs visual assessment (PVY). Bokx JA de; Piron PGM, 1977. Recently, strains of PVY which can cause necrosis (dead spots on leaves and in tubers) have been discovered, … A shortened version of the URL, helpful when communicating the URL over email or verbally. Lab testing is more accurate due to mild or non-existent foliar symptoms typical of some cultivars/PVY strains. These oils must be applied frequently to cover new growth and oil dilution due to rain or irrigation.  Anti-feedant compounds may help control spread of PVY by colonizing aphids. Remember – most vectors of PVY do not colonize potato and their ability to transmit PVY to the plant will not be affected by systemic insecticides. Use PVY resistant potato varieties when available. Use an integrated approach with the following practices for the best results. Potato virus Y (PVY) and zebra chip (ZC) disease are major threats to solanaceous crop production in North America. 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