infestans have been identified which might be due to indiscriminate spraying of metalaxyl (Ridomil) fungicide.īoth fungicide management and farmer training with farmer field schools are discussed. Existence of metalaxyl resistant strains of P. The frequency of races differed greatly with maximum occurrence of race 2. infestans have so far been identified in Bangladesh. A set of 15 late blight resistant germplasm lines received from CIP, Peru in 2005 was evaluated under natural conditions of which 6-7 were found to be resistant to the disease.Īttempts were made to develop late blight resistant transgenic potato varieties by transforming the RB resistance gene into two commercial varieties. Of these only three lines (CIP-607, CIP-272 and CIP-616) were found to be tolerant to late blight. So far more than 300 germplasm (exotic and local) and TPS progenies were screened through artificial inoculation. Screening for late blight resistance was carried out under both natural and artificial conditions. In recent years more than 300 varieties, 2050 germplasm lines and 250 true potato seed (TPS) progenies were evaluated for resistance to major diseases under field conditions. Late blight was first reported in Bangladesh in 1922. In Bangladesh, late blight causes serious yield loss in potato every year. Unfortunately, potato suffers from many destructive diseases, of which late blight, caused by Phytophthora infestans is the most important one. Potato is an important commercial crop in Bangladesh. Phytophthora infestans, symptomatology, distribution, yield loss, race spectrum, host resistance, disease management Late blight, caused by the oomycete pathogen Phytophthora infestans (Mont.) de Bary, is one of the most devastating diseases in potato worldwide. ISHS Acta Horticulturae 834: III International Late Blight Conference RESEARCH EXPERIENCE ON POTATO LATE BLIGHT DISEASE MANAGEMENT IN BANGLADESH Phytophthora infestans is the oomycete, or water mold pathogen, responsible for tomato late blight. ![]() RESEARCH EXPERIENCE ON POTATO LATE BLIGHT DISEASE MANAGEMENT IN BANGLADESH
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