Relationship between total nodulation and nodulation at the root crown of peanut, soybean and common bean plants

Cardoso, Juscélio D.; Gomes, Douglas Fabiano; Goes, Kelly Campos Guerra Pinheiro de; Fonseca, N.; Dorigo, O. F.; Hungría, Mariangela; Andrade, Diva Souza

doi:10.1016/j.soilbio.2009.05.008

Cited by 48 publications

(44 citation statements)

References 8 publications

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“…We verified in this study that all treatments showed NN above 15 nodules plant -1 , which indicate good symbiotic efficiency (Cardoso et al, 2009;Fonseca et al, 2013).…”

Section: Effect Of the Treatments On Nodulation And Productivity Of Tsupporting

confidence: 71%

“…In the studies by Chagas Júnior et al (2010), the authors found that 32% of new isolates showed more NN in the common bean compared to the standard strains CIAT 899 and H12. However, the quantity of nodules alone does not guarantee high efficiency of BNF (Cardoso et al, 2009;Fonseca et al, 2013). In this study we observed that the treatments differed among themselves concerning NN, but as for NDW, RDW and LA, no significant differences were observed (Table 1).…”

Section: Resultsmentioning

confidence: 99%

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Nodulation, contribution of biological N2 fixation, and productivity of the common bean (Phaseolus vulgaris L.) inoculated with rhizobia isolates

Moreira¹,

Oliveira²,

Ferreira³

2017

Aust J Crop Sci

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The common bean has a great economic, social, and nutritional importance and requires high levels of nitrogen for its cultivation. The plant in symbiosis with rhizobia bacteria can benefit from biological nitrogen fixation (BNF). To assess the agronomic efficacy of rhizobia isolates on the nodulation, contribution of BNF and productivity of the common bean, two experiments were conducted in separate locations. Seventeen Rhizobium tropici isolates were selected and compared with three commercial Rhizobium spp. strains: CIAT 899 and H12 (R. tropici) and PRF 81 (R. freirei). The variables analyzed were: number of nodules (NN), nodules dry weight (NDW), root dry weight (RDW), leaf area (LA), shoot dry weight (SDA), total nitrogen in shoots (Total-N), number of pods (NP), number of grains (NG), grain yield (GY), percentage of nitrogen derived from BNF (Ndfa%), and total nitrogen derived from BNF in the shoots (NdBNF). Inoculation with R. tropici isolates promoted significant gains in nodulation, growth, and productivity of the common bean. About 50% of the isolates promoted GY rates equal to or superior to the nitrogen treatment (NT) and to the standard strains CIAT 899, PRF 81, and H12. Among the best isolates, the Ndfa% ranged from 64.2% to 75.8%, with NdBNF ranging from 802.91 to 1037.56 mg plant -1 . The isolate JPrG10A6 of Rhizobium tropici provided high values of NdBNF and GY, showing great potential to be used commercially as inoculant of the common bean crop.

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“…We verified in this study that all treatments showed NN above 15 nodules plant -1 , which indicate good symbiotic efficiency (Cardoso et al, 2009;Fonseca et al, 2013).…”

Section: Effect Of the Treatments On Nodulation And Productivity Of Tsupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Nodulation, contribution of biological N2 fixation, and productivity of the common bean (Phaseolus vulgaris L.) inoculated with rhizobia isolates

Moreira¹,

Oliveira²,

Ferreira³

2017

Aust J Crop Sci

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“…As cultivares de feijoeiro apresentaram, em média, 12 nódulos por planta tanto na safra da seca-2012 quanto na das águas-2012/2013, ou aproximadamente 15 nódulos totais por planta, considerando a equação citada por Cardoso et al (2009) para conversão das quantidades de nódulos nos primeiros 0,07 m de raízes para as quantidades totais de nódulos, havendo interação (p<0,05) entre cultivares e nutrições nitrogenadas (Figuras 2a e 2b). Comparativamente a dados da literatura (Franco et al, 2002;Araújo et al, 2007;Silva et al, 2009), pode-se considerar que as nodulações foram sistematicamente baixas.…”

Section: Resultsunclassified

“…Os dados de precipitação pluvial e temperatura do ar obtidos em estação agrometeorológica da estação experimental em ambas as safras estão apresentados na figura 1. Para avaliar os nódulos radiculares, empregou-se procedimento proposto por Cardoso et al (2009), separando-se o sistema radicular compreendido entre o nó codiledonar e os primeiros 0,07 m, no pleno florescimento de todas as cultivares em ambas as safras, dos 70 aos 80 dias após a emergência das plantas. As raízes foram lavadas em peneira de 0,75 mm, retirando-se e quantificando-se os nódulos, os quais foram inseridos em sacos de papel e secos em estufa com circulação forçada de ar a 20-30 ºC por 24 h, para estimativas de massas de matéria seca dos nódulos radiculares.…”

Section: (Quadro 1)unclassified

Nodulações e Produtividades de Grãos de Feijoeiros diante da Adubação Nitrogenada ou da Inoculação com Rhizobium Freirei

Yagi

Andrade

Waureck

et al. 2015

Rev. Bras. Ciênc. Solo

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reSUmOO conhecimento das respostas de feijoeiros em razão da adubação nitrogenada ou da inoculação das sementes com rizóbios pode direcionar seus cultivos para diferentes nichos de mercado, em níveis tecnológicos diversos. Foram avaliadas as nodulações das raízes e as produtividades de grãos de 10 cultivares de feijão diante da adubação nitrogenada e da inoculação das sementes com Rhizobium freirei, objetivando-se identificar em, termos de produtividades de grãos, as mais eficientes e responsivas à adubação nitrogenada, bem como à nutrição simbiótica de N em relação à adubação nitrogenada. Foram conduzidos dois experimentos em duas safras (seca-2012 e águas-2012/2013), empregando-se, em cada qual delineamento em blocos ao acaso, em esquema fatorial 10 × 3 com quatro repetições. avaliaram-se as quantidades e massas de nódulos radiculares e produtividades de grãos de 10 cultivares de feijão dos grupos comerciais preto (IPr Gralha, IPr tuiuiú, rio tibagi, brS esplendor e IPr Uirapuru) e carioca (IPr tangará, Iapar 81, IPr Campos Gerais, brS Pontal e Carioca), em razão de três tratamentos, visando variações em nutrições nitrogenadas: testemunha, sem n; com adubação nitrogenada; e inoculação das sementes com R. freirei. Feijões do grupo comercial carioca são mais produtivos e, independentemente da nodulação com rizóbios nativos ou exógenos, são mais propensos à nutrição simbiótica nitrogenada. A adubação nitrogenada é prejudicial, principalmente para as nodulações das cultivares brS esplendor, Carioca e brS Pontal na safra da seca. em termos de produtividades de grãos, as cultivares rio tibagi, brS esplendor, brS Pontal e IPr Uirapuru são relativamente mais eficientes com a inoculação das sementes com R. freirei do que com a adubação Recebido para publicação em 13 de junho de 2014 e aprovado em 2 de dezembro de 2014.

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“…Seed surface inoculation (as was done in our experiment) produces nodules mainly in the upper region of the root system because the movement of inoculated rhizobia in soil is limited (Catlow et al 1990). Generally, crown root nodulation has a positive relationship with total nodulation of dry beans (Cardoso et al 2009). Effective nodulation is essential for a functioning legume-Rhizobium symbiosis.…”

Section: Resultsmentioning

confidence: 99%

Biological nitrogen fixation and nifH gene expression in dry beans (Phaseolus vulgaris L.)

et al. 2014

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(1 ). To identify efficient N 2 fixers, 22 dry bean genotypes were screened for symbiotic N 2 -fixation in potted low-N soil in the greenhouse under four treatments: (1) (1 ) with either rhizobial inoculant, and Viva fixed the highest amount (129 mg N plant(1 ) when inoculated with Nitrastik-D. In contrast, AC Black Diamond, Island, Winchester, AC Polaris, LEF 2RB and SEA 5 had low N 2 -fixing potential (3 to 23 mg N plant(1 ) in inoculated treatments. The qRT-PCR analysis indicated that nifH gene expression was 5 fold higher in GH-196 compared to the non-nodulating mutant R99, which further confirmed the high N 2 -fixation capacity of GH-196. After confirmation in the field, dry bean genotypes with improved N 2 -fixation potential identified in this study may be used as parents in breeding programs in the development of future cultivars. The nifH gene expression may be used as a rapid test to select dry beans with high N 2 -fixation potential. L'analyse qRT-PCR re´ve`le que l'expression du ge`ne nifH est cinq fois plus e´leve´e chez GH-196 que chez l'autre mutant (R99) ne produisant pas de nodules, ce qui confirme encore plus la forte capacite´de fixation du premier. Apre`s confirmation au champ, les ge´notypes de haricot a`meilleur potentiel de fixation de l'azote identifie´s dans le cadre de cette e´tude pourraient servir de parents dans les programmes d'hybridation visant a`cre´er de nouveaux cultivars. L'expression du ge`ne nifH pourrait servir de test pour se´lectionner rapidement les varie´te´s de haricot qui fixent bien le N 2 .Mots clé s: Se´lection de ge´notypes, inoculation, fixation du N 2 , Rhizobium, RT-PCR 1 Corresponding author (e-mail: newton.lupwayi@agr. gc.ca).Abbreviations: RDW, root dry weight; RT-PCR, reverse transcription polymerase chain reaction; SDW, shoot dry weight Can.

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Relationship between total nodulation and nodulation at the root crown of peanut, soybean and common bean plants

Cited by 48 publications

References 8 publications

Nodulation, contribution of biological N2 fixation, and productivity of the common bean (Phaseolus vulgaris L.) inoculated with rhizobia isolates

Nodulation, contribution of biological N2 fixation, and productivity of the common bean (Phaseolus vulgaris L.) inoculated with rhizobia isolates

Nodulações e Produtividades de Grãos de Feijoeiros diante da Adubação Nitrogenada ou da Inoculação com Rhizobium Freirei

Biological nitrogen fixation and nifH gene expression in dry beans (Phaseolus vulgaris L.)

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