Plant Galls
Mostrando 25-36 de 89 artigos, teses e dissertações.
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25. Insect galls of a protected remnant of the Atlantic Forest tableland from Rio de Janeiro State (Brazil)
ABSTRACT Insect galls of a protected remnant of the Atlantic Forest tableland from Rio de Janeiro State (Brazil): Galling insects in Rio de Janeiro state are known by their great diversity, despite most of the surveys have been done in restinga. This paper investigated the insect galls from a remnant of Atlantic Forest located in São Francisco de Itabapoana
Rev. Bras. entomol.. Publicado em: 2016-03
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26. Relationship between gall-midge parasitism, plant vigor, and developmental instability in Ouratea polygyna Engl (Ochnaceae) in a patch of a Brazilian Atlantic Forest
We tested the preference prediction of plant vigor hypothesis by examining the relationship between gall occurrence and leaf size. We also examined the effect of galls on leaf asymmetry, which is a measure of developmental instability. Gall occurrence did not increase with leaf size, thereby providing no support to the preference prediction. Galled leaves we
Acta Bot. Bras.. Publicado em: 2015-06
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27. Huitlacoche yield in some maize varieties in the Mediterranean region of Turkey
Huitlacoche is the Aztecs name given to the smut galls on ears of maize caused by the pathogenic plant fungus Ustilago maydis [(DC) Corda.)]. It is known as maize mushroom, and it has been considered a delicacy and in Mesoamerica. The aim of the present study was to determine the responses of some maize varieties to the growth of the fungus in order to evalu
Food Sci. Technol. Publicado em: 2015-04
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28. Galling insects are bioindicators of environmental quality in a Conservation Unit
Galls are well distributed across the World and among plant families. Their diversity can support the status of conservation of an area as an urban park, once inventories are presented. These inventories also help to understand the morphological patterns of the galls, based on their most common shape, color, host botanical families, inducers and galled organ
Acta Bot. Bras.. Publicado em: 2014-12
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29. Use of the arbuscular mycorrhizal fungus Glomus intraradices as biological control agent of the nematode Nacobbus aberrans parasitizing tomato
The plant-parasitic nematode Nacobbus aberrans is an endoparasite that induces gall formation in the roots and causes severe losses to diverse crops. Some populations of this nematode show preference for certain hosts, revealing the existence of "races/groups" with different behaviour and making nematode management difficult. A possible biological control al
Braz. arch. biol. technol.. Publicado em: 2014-10
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30. Observations on the gall rust fungus Prospodium transformans, a potential biocontrol agent of Tecoma stans var. stans (Bignoniaceae) in South Africa
Tecoma stans var. stans, a tree originating from the Americas, is emerging as an invasive weed in South Africa. A microcyclic gall inducing rust fungus, Prospodium transformans, has been investigated as a biological control agent against this plant. Development of germinating teliospores and symptoms on host plants are described, and the optimum temperature
Trop. plant pathol.. Publicado em: 2014-08
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31. Insect galls of restinga areas of Ilha da Marambaia, Rio de Janeiro, Brazil
Insect galls of restinga areas of Ilha da Marambaia, Rio de Janeiro, Brazil. This study carried out an insect gall inventory in restinga areas of Ilha da Marambaia, in the municipality of Mangaratiba, Rio de Janeiro, Brazil. Sampling was carried out monthly from April 2010 to March 2011 along the full extension of seven beaches. A total number of 147 gall mo
Rev. Bras. entomol.. Publicado em: 2014-06
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32. Volatile organic compounds for the control of Meloidogyne exigua in Coffea arabica
Meloidogyne exigua is a plant-parasitic nematode that causes great losses to coffee farmers. Thus, to contribute to the development of new products to control this parasite, the present work studied the effect of volatile organic compounds (VOC) on the nematode and coffee plants (Coffea arabica), since these compounds are known to be used in plant defense ag
Trop. plant pathol.. Publicado em: 2013-10
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33. Host plants of insect-induced galls in areas of cerrado in the state of Goiás, Brazil
Most studies of the interactions between plants and gall-inducing (galling) insects have focused on the entomological aspects, few having addressed the diversity of galls in relation to the characteristics of the host plants. The objective of this study was to analyze the richness and composition of the community of host plants of galls in areas of cerrado (
Acta Bot. Bras.. Publicado em: 2013-09
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34. Gall-inducing insects of an Araucaria Forest in southern Brazil
Gall-inducing insects of an Araucaria Forest in southern Brazil. Diversity of galling insects is reported for the first time in an Araucaria Forest site. We address gall characteristics, host plant identification and the inducer identification and provide additional information about sites of gall occurrence in a mosaic of continuous forest and natural fores
Rev. Bras. entomol.. Publicado em: 28/05/2013
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35. Defense responses to Meloidogyne exigua in resistant coffee cultivar and non-host plant
The resistance of coffee plants to Meloidogyne exigua is conferred by the gene Mex-1. However, the mechanisms of resistance still need to be clarified. Therefore, the penetration, development and reproduction of two populations of M. exigua (M1, isolated from the coffee plant and M2, from rubber tree) in susceptible (Coffea arabica 'Catuai') and resistant (C
Trop. plant pathol.. Publicado em: 2013-04
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36. Evaluation of acibenzolar-S-methyl for the control of Meloidogyne javanica and effects on the development of susceptible and resistant soybean
The aim of this study was to evaluate the activity of elicitor, acibenzolar-S-methyl (ASM), in inducing resistance to Meloidogyne javanica in soybean and in enhancing plant development. Plantlets of the soybean susceptible cultivar BRSMT-Pintado and the resistant cultivar MG/BR 46 Conquista were treated with ASM (0.5 g/L) at three different times: seven days
Trop. plant pathol.. Publicado em: 2013-02