Dependência e resposta de mudas de cedro a fungos micorrízicos arbusculares

Rocha, Fabiano Souza; Júnior, Orivaldo José Saggin; Silva, Eliane Maria Ribeiro da; Lima, Wallace Luís de

doi:10.1590/s0100-204x2006000100011

Cited by 25 publications

(23 citation statements)

References 14 publications

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“…Já as plantas colonizadas com G. clarum e as plantas sem inóculo não mostraram aumento significativo. Ao contrário do verificado no presente estudo, a espé-cie G. clarum foi eficiente em promover o crescimento e absorção de P em mudas de cedro (Rocha et al, 2006). …”

Section: Resultsunclassified

“…Mesmo não ocorrendo especificidade entre fungos micorrízicos arbusculares (FMA) e plantas hospedeiras, trabalhos demonstraram que Glomus clarum destacou-se em relação a outros FMA em plantas cultivadas em diferentes concentrações de P no solo, como algodoeiro (Siqueira et al, 1986), trevo vesiculoso (Pessoa et al, 1997), soja (Nogueira e Cardoso, 2000) e cedro (Rocha et al, 2006).…”

Section: Introductionunclassified

“…Os FMA podem beneficiar a cultura do amendoim, permitindo a redução do uso de adubos e dos custos de produção. Assim, é importante estudar diferentes espécies de FMA em uma mesma planta, para selecionar FMA eficientes em promover o crescimento de seu hospedeiro (Paula et al, 1990;Rocha et al, 2006).…”

Section: Introductionunclassified

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Dependência micorrízica do amendoinzeiro sob doses de fósforo

Hippler

Moreira

2013

Bragantia

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ResumoO amendoinzeiro responde positivamente quanto à produção de grãos quando associado a fungos micorrízicos arbusculares (FMA), porém é necessário verificar sua dependência para diferentes espécies em diferentes níveis de fósforo (P). Este trabalho teve por objetivo determinar a dependência micorrízica de Arachis hypogea L. cv. Runner IAC 886 sob diferentes concentrações de P, e avaliar o desenvolvimento do hospedeiro e do endófito após a colonização. O experimento foi conduzido em casa de vegetação, em delineamento inteiramente casualizado, com duas espécies de FMA (Gigaspora rosea e Glomus clarum) e um controle não inoculado, combinados com quatro doses de P aplicados no solo: 0, 75, 150 e 250 mg kg -1 . Após 50 dias da germinação do amendoim, foram avaliados a matéria seca (MS), a colonização radicular, o número de esporos no solo, a dependência micorrízica e a disponibilidade de P. Verificou-se que as plantas de amendoim apresentaram dependência micorrízica à inoculação com a espécie G. rosea nos tratamentos com baixo suprimento de P e com G. clarum somente na ausência do nutriente. A inoculação com G. rosea proporcionou maior produção de MS total na dose de 75 mg kg -1 de P (7,2 g por planta), sendo que houve aumento no acúmulo de P na parte aérea até na maior dose de 250 mg kg -1 de P. Já a espécie G. clarum apesar de ter proporcionado maiores números de esporos e colonização radicular, apresentou o menor crescimento das plantas e menor eficiência na utilização de P pela parte aérea.Palavras-chave: fungos micorrízicos arbusculares, Arachis hypogea, adubação fosfatada. Mycorrhizal dependence of peanut plants on phosphorus levelsAbstract Peanut grains production responds positively when associated to arbuscular mycorrhizal fungi (AMF), but it is necessary to determine its dependence on phosphorus (P) supply for in different species in plants. The aim of this study was to determine the mycorrhizal dependency of Arachis hypogea L. to different P levels and to evaluate the development of host and endophyte after colonization. A greenhouse experiment was carried out in completely randomized design, with two mycorrhizal fungi species (Gigaspora rosea and Glomus clarum) and a control without the fungus, and also with different P levels applied to the soil (0, 75, 150 and 250 mg kg -1 of P). After 50 days of groundnuts germination, there were evaluated dry weight (DW), root colonization, number of spores in the soil, mycorrhizal dependency and available P. The peanut plants showed mycorrhizal dependency when inoculated with G. rosea in low supply of P and for G. clarum only in the absence of the nutrient. The inoculation with G. rosea produced higher DW with 75 mg kg -1 of P (7.2 g per plant), whereas there was an increase in the accumulation of P in shoots up to the highest dose (250 mg kg -1 ) of P. Although G. clarum provided higher number of spores and root colonization ratio, it had the lowest plant growth and also lower P use efficiency by shoots.

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Section: Resultsunclassified

Section: Introductionunclassified

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Dependência micorrízica do amendoinzeiro sob doses de fósforo

Hippler

Moreira

2013

Bragantia

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“…In addition to using containers most suitable for the seedlings' development, inoculation with arbuscular mycorrhizal fungi (AMF) can also make a significant contribution to the process of producing high-quality seedlings in tree nurseries MARTINS, 2003;ROCHA et al, 2006). AMF are symbiont organisms which combine with plant roots and this can result in benefits, such as an increase in the strength of the seedlings and accelerated rates of growth, better use of nutrients, a reduction in the need for inputs and greater tolerance of stress during the process of transplanting out in the field.…”

Section: Introductionmentioning

confidence: 99%

“…AMF are symbiont organisms which combine with plant roots and this can result in benefits, such as an increase in the strength of the seedlings and accelerated rates of growth, better use of nutrients, a reduction in the need for inputs and greater tolerance of stress during the process of transplanting out in the field. (CARNEIRO et al, 2004;ROCHA et al, 2006;ANGELINI et al, 2013;SOUSA, 2014).…”

Section: Introductionmentioning

confidence: 99%

Production of Australian Cedar Seedlings Inoculated With Arbuscular Mycorrhizal Fungi in Different Types of Containers

et al. 2016

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-The present study aimed to evaluate the growth and the levels of N, P, K, Ca and Mg in Australian cedar seedlings which had been inoculated with arbuscular mycorrhizal fungi (AMF) in different types of containers. The experiment was carried out in a greenhouse and the experimental design was that of randomized complete blocks (RCB), with a 4 x 4 factorial design consisting of four inoculation treatments with AMF (Rhizophagus clarum, Gigaspora margarita, a mixed inoculation (R. clarum + G. margarita) and the control (with no AMF inoculation); four types of containers (plastic bags measuring 250 cm 3 , tubes of 55 and 130 cm 3 and pressed blocks 440 cm 3 . plant -1 ), with four repetitions. The height, the diameter of the stem base, the aerial part dry weight (APDW), the dry weight of the root (DWR) and the total plant dry weight (DW) were measured, along with the Dickson quality index, the percentage of mycorrhizal colonization and the levels of N, P, K, Ca and Mg in the aerial part dry weight. One hundred and thirty eight days (138) days after sowing, the greatest growth and/or the highest levels of P, K and Ca could be observed in the aerial part dry weight of the Australian cedar seedlings which had been planted in the pressed block container and inoculated with a mixture of the two AMF species (G. margarita + R. clarum) or with just R. clarum. Thus it can be seen that AMF can make a significant contribution to the production of Australian cedar seedlings.

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