Thesiss

More than 150 year after the Irish potato famine, blight caused by Phytophthora infestans (Mont.) de Bary has re-emerged as a major disease worldwide. In Morocco, tomatoes (Lycorpersicum esculentum Mill.) and potatoes (Solanum tuberosum L.) have become an important segment of th…

Onion is a vegetable crop that is consumed and cultivated worldwide. The production of bulbs, however, is threatened by pathogens and pests that infect onion plants and cause yield losses. Three severe diseases of onion are leaf blight, neck rot and white rot and all three are c…