<p><b>Production of lettuce seedlings.</b></p><p>Autor: Ricardo José Domingues</p> <p><b>Downy mildew symptom in lettuce seedlings.</b></p><p>Autor: Ricardo José Domingues</p> <p><b>Initial symptoms of leaf downy mildew represented by yellowed and angular areas.</b></p><p>Autor: Jesus G. Tofoli</p> <p><b>Downy mildew on iceberg lettuce in the field.</b></p><p>Autor: Ricardo José Domingues</p> <p><b>Sporulation of B. lactucae on the underside of leaves.</b></p><p>Autor: Jesus G. Tofoli</p> <p><b>Detail of B. lactucae sporulation</b></p><p>Autor: Jesus G. Tofoli</p> <p><b>Bremia lactucae sporangiophores.</b></p><p>Autor: Ricardo José Domingues</p> <p><b>Fruiting of B. lactucae in lettuce root system.</b></p><p>Autor: Ricardo José Domingues</p>