Colonization of lettuce cultivars and rotation crops byFusarium oxysporumf. sp. lactucae,the cause of fusarium wilt of lettuce

[Monitoring of lettuce crops of Ribeirão Preto, SP, Brazil].

The ingesting of raw vegetables plays an important role in the transmission of several infectious diseases due to the high frequency of irrigation with wastewater. The objective of this study was to evaluate the sanitary conditions of all lettuce producing crops in Ribeirão Preto through microbiological and parasitological analysis of both irrigation water and lettuce together with the implanta...

effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars

این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...

Biology and Epidemiology of Verticillium Wilt of Lettuce

histopathological study of resistant and susceptible lettuce cultivars during the development of fusarium oxysporum f. sp. lactucum

the cultivars green mignonette and all year which are resistant and susceptible to fusarium wilt, respectively were studied for histopathological aspect during the development of fusarium oxysporum f. sp. lactucum. 15 days - old seedling was inoculated by root dip method in spore suspension of the pathogen with concentration about 5 x 106 spores/ml. sampling was carried out at different times (...

Colonization of lettuce rhizosphere and roots by tagged Streptomyces

Beneficial microorganisms are increasingly used in agriculture, but their efficacy often fails due to limited knowledge of their interactions with plants and other microorganisms present in rhizosphere. We studied spatio-temporal colonization dynamics of lettuce roots and rhizosphere by genetically modified Streptomyces spp. Five Streptomyces strains, strongly inhibiting in vitro the major soil...