American-Eurasian J. Agric. & Environ. Sci., 16 (7): 1247-1254, 2016 ISSN 1818-6769 © IDOSI Publications, 2016 DOI: 10.5829/idosi.aejaes.2016.16.7.12934 Corresponding Author: H. Mehraj, The United Graduate School of Agricultural Sciences, Ehime University, Ehime 790-8556, Japan. 1247 Evaluation of Some Certified Potato Seed Varieties Against PVY and PLRV Infection in Six Farms/Zones of Bangladesh Jyotish Chandra-Sarker, Akanda Abdul-Mannan, Karim Md-Rezaul, 1 2 3 R.K. Sikder and H. Mehraj 4 5 Seed Potato Storage Specialist, BETS Consulting Services Ltd., Gulshan 1, 1 Dhaka-1212, Bangladesh Professor, Department of Plant Pathology, Bangabandhu Sheikh Mujibur 2 Rahman Agricultural University, Gazipur-1706, Bangladesh Joint Director (Quality Control), Potato Seed Division, Bangladesh Agricultural 3 Development Corporation, Dhaka-1000, Bangladesh Horticulture Development Division, Bangladesh Agricultural Development Corporation, 4 Dhaka-1000, Bangladesh The United Graduate School of Agricultural Sciences, Ehime University, Ehime 790-8556, Japan 5 Abstract: Potato is a very popular tuberous vegetable crop in Bangladesh but its production is greatly hampered by lacking of quality seeds. An experiment was performed to evaluate the quality of certified seed potatoes against Potato virus Y (PVY) and Potato leaf roll virus (PLRV) on different seed potato varieties (Asterix, Cardinal, Diamant and Granula) cultivated in Bangladesh. Foundation and TLS (Truthfully leveled seed) seed potatoes were produced in six different seed production farms/zones (Nilphamari, Domar, Nashipur, Madupur, Dattanagar and Amla) of BADC were tested for PVY and PLRV infection level. The infection level of both viruses in almost all supplied samples of both Foundation and TLS Class seed potatoes were found beyond the acceptable limit. However, the incidences of the two viruses were found to be varied in accordance to seed production zones/farms and tested varieties. Variety Asterix and Diamant are more tolerant than Cardinal and Granula. Domar and Nilphamary farms are better zones for quality foundation seed production while Thakurgaon & Nashipur zones are better for quality TLS seed potato production. Key words: Solanum tuberosum Virus Foundation seed and TLS class seed INTRODUCTION are not seed-borne but it got futile in case of potatoes as Potato (Solanum tuberosum L.) is among the four propagation in potatoes is the cause of varietal most important global crops [1] which positioned at degenerescence, once seed tubers from infected mother second after cereals. Lack of availability of affordable high plants may carry viruses. Worldwide potato crop is quality seed potatoes is the main constraint to potato infected by more than 36 viruses and viroid [2, 3]. The production in Bangladesh. Uses of quality seed can lamentable poor yield of potato in our country is mostly contribute up to a great extend to boost up crop attributed to the poor quality of seed potatoes mainly due production. Thus production and availability of quality to degeneration as a direct consequence of a buildup of seed is very important and that’s why the government has viral pathogens specially PVY and PLRV. About 40 recently given the seed sector a `Topmost Priority’ status. viruses are known to infect cultivated potatoes [4] PVY Nowadays, viral diseases are the most alarming factors for ranked 5 based on scientific/economic importance [5] vegetable cultivation in Bangladesh. Though it is among all plant viruses Bangladesh Agricultural relieving to all crop growers that most of the plant viruses Development Corporation (BADC) is trying to produce it is propagated vegetatively through tubers. Vegetative th