Fungos micorrízicos arbusculares e adubação fosfatada em mudas de mangabeira

Costa, Cleber Thiago Ferreira; Cavalcante, Uided Maaze Tiburcio; Goto, Bruno Tomio; Santos, Venézio Felipe dos; Maia, Leonor Costa

doi:10.1590/s0100-204x2005000300005

Cited by 29 publications

(27 citation statements)

References 20 publications

(14 reference statements)

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“…The negative effect of the P level on the RMD is in agreement with results of previous studies on mangaba trees (Hancornia speciosa) (Costa et al, 2005) and Brazilian native woody plants (zangaro et al, 2007). However, the RMD is highly variable among plant species (zangaro et al, 2007), AMF species and soil conditions (Nogueira and Carvalho, 2007).…”

Section: Discussionsupporting

confidence: 92%

Physic nut plants present high mycorrhizal dependency under conditions of low phosphate availability

Balota

Machineski

Truber

et al. 2011

Braz. J. Plant Physiol.

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The physic nut (Jatropha curcas L.) is a perennial tree that occurs naturally in the tropical and subtropical regions of Brazil. Fruits of physic nut present an oil content of 28% on a dry weight basis. Although the plant has adapted to diverse soil conditions such as low fertility, the correction of soil acidity and the addition of fertilizer are essential for highly productive plants. Thus, the response of the physic nut to different soil phosphorus levels (P) and arbuscular mycorrhizal fungi (AMF) inoculation must be characterized. Hence, the objective of the present study was to evaluate the response of physic nut seedlings to arbuscular mycorrhizal fungi (AMF) inoculation at different levels of soil P. Experiment was carried out in a greenhouse encompassing AMF treatments (inoculation with Gigaspora margarita or Glomus clarum, and the non inoculated controls), and phosphorus treatments (0, 25, 50, 100, 200 and 400 mg kg -1 added to soil). At low soil P levels, arbuscular mycorrhizal fungi inoculation had a significant positive effect on plant growth, shoot and root dry matter content, plant height, number of leaves, total leaf area, leaf area per leaf and the Dickson quality index. The root:shoot ratio and the leaf area ratio were also affected by mycorrhizal inoculation and the level of P addition. Physic nut plants exhibited high mycorrhizal dependency at soil P additions up to 50 mg kg -1 . Key words: mycorrhizal inoculation, plant growth, leaf area, biomass dry matter. resuMoO pinhão manso (Jatropha curcas L.) é uma planta perene que pode ser encontrada naturalmente em regiões tropicais e subtropicais do Brasil. Seus frutos apresentam 28% de óleo com base no peso seco. Apesar de o pinhão manso apresentar alta adaptabilidade às diversas condições do solo como baixa fertilidade, a correção da acidez do solo e a adição de fertilizantes são fundamentais para a alta produtividade das plantas. Por isto é essencial avaliar o comportamento do pinhão manso em diferentes níveis de P e sua resposta a inoculação dos fungos micorrízicos arbusculares (FMA). O objetivo do trabalho foi o de avaliar o efeito dos fungos micorrízicos arbusculares em mudas de pinhão manso em diferentes doses de P no solo. Foi conduzido um experimento em casa de vegetação, com tratamentos de fungos micorrízicos (Controle, Gigaspora margarita e Glomus clarum) e de adição de P (0, 25, 50, 100, 200 e 400 mg kg solo vegetativo como: peso da matéria seca da parte aérea e das raízes, altura, diâmetro do caule, número de folhas, área foliar, área foliar por folha e índice de qualidade Dickson, principalmente nas doses menores de P. A relação raiz:parte aérea e relação da área foliar foram influenciadas pela micorrização e pelos teores de P no solo. O pinhão manso apresentou alta dependência micorrízica até a dose de 50 mg kg -1 de P.palavras-chaves: inoculação de micorrizas, desenvolvimento da planta, área foliar, matéria seca da biomassa.

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Section: Discussionsupporting

confidence: 92%

Physic nut plants present high mycorrhizal dependency under conditions of low phosphate availability

Balota

Machineski

Truber

et al. 2011

Braz. J. Plant Physiol.

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“…* and **Significant regressions at 5 and 1% probability level, respectively. level ranging from 3 to 183 mg dm -3 (Costa et al, 2005). In the present work, shoot dry weight increased up to 50 mg kg -1 , depending on the mycorrhizal inoculum.…”

Section: Resultssupporting

confidence: 46%

“…Inoculation with arbuscular mycorrhiza (AM) seems to be an interesting tool to select elite mangaba genotypes and to help in the domestication and improvement of recalcitrant species, given that H. speciosa has shown to be highly responsive do AM, mainly in low-fertility soils (Costa et al, 2005). Thus, it is important to know the dependency of H. speciosa on AM, for seedlings production purposes and for the use of effective AM inocula during the nursery phase.…”

Section: Introductionmentioning

confidence: 99%

Mycorrhizal dependency of mangaba tree under increasing phosphorus levels

Filho

Lemos

Santos

et al. 2008

Pesq. agropec. bras.

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-The objective of this study was to evaluate the mycorrhizal dependency of mangaba tree (Hancornia speciosa) plantlets, under increasing levels of phosphorus fertilization. The experimental design was completely randomized in a 4×5 factorial arrangement with three mycorrhizal fungi inocula -Gigaspora margarita, Glomus etunicatum, or a pool of native mycorrhizal fungi (Acaulospora longula, Glomus clarum, Gigaspora albida, Paraglomus sp.) -, and a nonmycorrhizal control, in combination with five levels of phosphorus applied to the substrate: 0, 25, 50, 75, and 100 mg kg -1. After 180 days of growth, plantlets with inoculation of native mycorrhizal pool produced more shoot and root dry biomass and had higher shoot phosphorus content and accumulation. The noninoculated control showed the lowest values, independently of the phosphorus level. The highest relative mycorrhizal dependency occurred with the inoculation of native mycorrhizal fungi. Plants with mycorrhizal fungi did not respond to phosphorus addition above 50 mg kg -1 . Mangaba tree is highly dependent on mycorrhiza, but the degree of dependency varies according to phosphorus levels and fungal inocula. In general, mangaba tree is more responsive to mycorrhizal fungi inoculation than to phosphorus addition.

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“…Assim como o desenvolvimento das plantas também podem ser afetado pelo teor P no solo (COSTA et al, 2005).…”

Section: Introductionunclassified

Fungos micorrízicos arbusculares nativos e doses de fósforo no desenvolvimento do amendoim RUNNER IAC 886

et al. 2011

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Resumo -Objetivou-se avaliar a interação entre fungos micorrízicos arbusculares nativos (FMA) com plantas de amendoim (Arachis hypogea) cultivar RUNNER IAC 886, em diferentes doses de fósforo (P). O experimento foi conduzido em casa de vegetação em delineamento inteiramente casualizado, em esquema fatorial (2 x 5), sendo com e sem a inoculação dos endófitos e cinco doses de P (0; 20; 40; 60 e 180 mg kg -1 na forma de KH 2 PO 4 ), com quatro repetições. Avaliaram-se massa seca de: raiz, parte aérea, total, taxa de colonização radicular (CR), dependência micorrízica (DM) e eficiência micorrízica (EM). Concluiuse que as doses crescentes de adubação fosfatada promoveram aumento no desenvolvimento das plantas de amendoim. Os FMA promoveram a produção máxima de massa seca total do amendoim na dose estimada de 114,0 mg kg -1 de P. A maior colonização radicular e eficiência micorrízica foram verificadas na dose 60 mg kg -1 de P. Palavras-chave -Amendoim. Adubação. Fertilizantes fosfatados. Fungos micorrízicos arbusculares.Abstract -The objective was to evaluate the interaction between native arbuscular mycorrhizal fungi (AMF) with peanut plants (Arachis hypogea) RUNNER cultivar IAC 886, at different levels of phosphorus (P). The experiment was conducted in a greenhouse in a randomized design in factorial (2 x 5), with and without inoculation of AMF and five P levels (0; 20; 40; 60 and 180 mg kg -1 in the form of KH 2 PO 4 ) in four replications. Shoot, root and total dry mass, root colonization, mycorrhizal dependency and mycorrhizal efficiency were evaluated. It was concluded that increasing levels of phosphorus caused an increase in the development of peanut plants. The AMF promoted maximum production of total dry mass of the peanut in estimated dose of 114.0 mg kg -1 of P. The highest root colonization and mycorrhizal efficiency were observed at 60 mg kg -1 of P.

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Fungos micorrízicos arbusculares e adubação fosfatada em mudas de mangabeira

Cited by 29 publications

References 20 publications

Physic nut plants present high mycorrhizal dependency under conditions of low phosphate availability

Physic nut plants present high mycorrhizal dependency under conditions of low phosphate availability

Mycorrhizal dependency of mangaba tree under increasing phosphorus levels

Fungos micorrízicos arbusculares nativos e doses de fósforo no desenvolvimento do amendoim RUNNER IAC 886

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