14 documents found, page 1 of 2
Root-Knot Nematode Species Associated with Horticultural Crops in the Island of...
Rusinque, Leidy; Nóbrega, Filomena; Cordeiro, Laura; Lima, Arlindo; Andrade, Samuel; Inácio, Maria LurdesPlant-parasitic nematodes (PPN) are an economically important group of plant pests present throughout the world. In particular, root-knot nematodes (RKN), sedentary endoparasites of a wide variety of economically important hosts with the ability to survive in temperate regions. During 2020–2021 an extensive survey of Meloidogyne spp. was undertaken on the island of São Miguel Azores, Portugal. A total of 80 sam...
First records of the lawn bug Blissus insularis Barber (Hemiptera: Blissidae) i...
Lima, Arlindo; Valada, Tatiana; Caetano, Maria Filomena; Franco, José Carlos; Ramos, Ana PaulaSince October 2019, chinch bugs have been detected in large sunken dead patches of St. Augustinegrass (Stenotaphrum secundatum) lawns in different locations of Lisbon and Setubal districts, in Portugal. Based on morphological and molecular studies, using mitochondrial Cytochrome C Oxidase subunit I (COI) gene, the collected insects were identified as Blissus insularis (Hemiptera, Heteroptera, Blissidae). This i...
Raffaelea quercina sp. nov. associated with cork oak (Quercus suber L.) decline...
Inácio, Maria L.; Marcelino, José; Lima, Arlindo; Sousa, Edmundo; Nóbrega, FilomenaResearch Highlights: Raffaelea quercina sp. nov. is an ophiostomatoid fungus isolated from the ambrosia beetle Platypus cylindrus. The species occurs in symptomatic Portuguese cork oak trees, (Quercus suber L.), exhibiting vegetative decline. Background and Objectives: Quercus suber L. is a species restricted to the Mediterranean basin, of special economic importance as it constitutes the crucial raw material f...
Gestão das infestantes do arroz
Dias, Maria; Pacheco, Pedro; Vasconcelos, Teresa; Lima, Arlindo; Forte, Paulo; Canha, Gonçalo; Setas, Filipa; Calha, Isabel; Monteiro, AnaNa cultura do arroz (Oryza sativa L.), realizada em constante alagamento, as infestantes que se desenvolvem, a sua densidade e correta gestão têm uma grande importância para o desenvolvimento do arroz e para a sua produção em quantidade e qualidade. O conhecimento da cultura, das infestantes e dos produtos herbicidas homologados permite relacionar estes fatores da melhor forma, atuando na parcela o mais oportun...
Morphological and genetic diversity of Biscogniauxia mediterranea associated to...
Henriques, Joana; Nóbrega, Filomena; Sousa, Edmundo; Lima, ArlindoBiscogniauxia mediterranea is a widespread fungus that causes charcoal disease on cork oak and other hardwood hosts. It had been considered a secondary pathogen causing the disease only in stressed hosts. However, its frequency and severity have been increasing, inclusive in young trees without other decline signs and developing atypical symptoms. The present work aims to assess the fungus' variability in the M...
Micobiota associada a adultos do escaravelho das palmeiras (hynchophorus ferrug...
Ramos, Ana Paula; Rocha, Marta; Belchior, Sara; Peixoto, Rui; Caetano, Filomena; Lima, ArlindoO escaravelho vermelho das palmeiras, Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae), é a mais importante praga de palmeiras em muitas regiões da Ásia, África e Europa. Foi assinalada pela primeira vez em Portugal em finais de Agosto de 2007 na Região do Algarve e de seguida noutras zonas do país. A descontrolada dispersão da praga e a sua elevada nocividade levaram a que se iniciasse em 2010 um program...
Extraction of potato cyst nematodes from soil samples: Cobb’s decanting and sie...
Camacho, Maria J.; Mota, Mariana; Lima, Arlindo; Rusinque, Leidy; Inácio, Maria L.Potato cyst nematodes are a threat to several agricultural crops around the world with some species considered quarantine pests and subjected to strict regulatory measures in many countries. Usually, cysts nematodes co-exist in the soil with other species of plant-parasitic nematodes, so, a time and cost-efficient extraction technique becomes of primary importance. The ideal extraction method should be able to ...
Fungi of Raffaelea genus (Ascomycota: Ophiostomatales) associated to Platypus c...
Inácio, Maria de Lurdes; Henriques, Joana; Lima, Arlindo; Sousa, EdmundoIn the study of the fungi associated to Platypus cylindrus, several fungi were isolated from the insect and its galleries in cork oak, among which three species of Raffaelea. Morphological and cultural characteristics, sensitivity to cycloheximide and genetic variability had been evaluated in a set of isolates of this genus. On this basis R. ambrosiae and R. montetyi were identified and a third taxon segregated...
Morphological and molecular identification of the potato cyst
Camacho, Maria; Nobrega, Filomena; Lima, Arlindo; Mota, Manuel; Inácio, MariaSummary – The potato cyst nematodes (PCN) Globodera rostochiensis and G. pallida pose one of the greatest threats to potato crops worldwide and are subject to strict quarantine regulations in many countries. The identification of these Globodera species based on morphology may be ambiguous due to the variability of the main morphological features and the overlapping of the standard parameters in these two speci...
Extraction of potato cyst nematodes from soil samples: Cobb's decanting and sie...
Camacho, Maria J.; Mota, Mariana; Lima, Arlindo; Rusinque, Leidy; Inácio, Maria L.Potato cyst nematodes are a threat to several agricultural crops around the world with some species considered quarantine pests and subjected to strict regulatory measures in many countries. Usually, cysts nematodes co-exist in the soil with other species of plant-parasitic nematodes, so, a time and cost-efficient extraction technique becomes of primary importance. The ideal extraction method should be able to ...