Relacionamento entre tamanho do nódulo e medições convencionais da nodulação - DOI: 10.4025/actasciagron.v29i1.65

José Valdemir Tenório da Costa; Mario de Andrade Lira Júnior; Rinaldo Luiz Caraciolo Ferreira; Newton Pereira Stamford; Marcela Campanharo; Clayton Albuquerque de Sousa

doi:10.4025/actasciagron.v29i1.65

Relationship between nodule size and conventional nodulation measurements - DOI: 10.4025/actasciagron.v29i1.65

José Valdemir Tenório da Costa UFRPE
Mario de Andrade Lira Júnior UFRPE
Rinaldo Luiz Caraciolo Ferreira UFRPE
Newton Pereira Stamford UFRPE
Marcela Campanharo UFRPE
Clayton Albuquerque de Sousa UFRPE

DOI: https://doi.org/10.4025/actasciagron.v29i1.65

Abstract

Relationship between nodule size and conventional nodulation measurements. A method was tested to allow the study over time of individual legume nodules. From seven days after emergence to full physiological maturity of cowpea plants weekly determinations of nodule number, size and dry matter, leaf area, plant height aerial part and root system dry masses and nitrogenase activity. Nodules were digitized at 100, 200 and 300 dots per inch resolutions, and each nodule length and diameter was measured with a digital pachymeter and on the digital images. Images of the root system of all plants were obtained weekly at 300 dpi on the larger sides of the pots. Destructive and non-destructive nodule size determinations were generally similar. Non-destructive measures of nodule size were valid predictors for measures such as nodule dry matter.

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Author Biography

Mario de Andrade Lira Júnior, UFRPE

Engenheiro Agrônomo formado pela Universidade Federal Rural de Pernambuco (1990), Mestre em Agronomia (Ciências do Solo) pela Universidade Federal Rural de Pernambuco (1994) e Doutor em Plant Science pela McGill University (2001). Atualmente está realizando treinamento pós-doutoral na Universidade Federal de Lavras. É professor da Universidade Federal Rural de Pernambuco a partir de 1993. Atualmente atua como docente no Programa de Pós-Graduação em Agronomia-Ciência do Solo, e como revisor ad-hoc nos periódicos Caatinga, Revista Brasileira de Ciência Agrária, Brazilian Journal of Microbiology e Revista Brasileira de Ciência do Solo. Tem experiência na área de Agronomia, com ênfase em Microbiologia e Bioquímica do Solo, atuando principalmente na fixação biológica do nitrogênio por leguminosas em associação com rizóbio. Currículo Lattes

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Published

2007-08-20

How to Cite

Costa, J. V. T. da, Lira Júnior, M. de A., Ferreira, R. L. C., Stamford, N. P., Campanharo, M., & Sousa, C. A. de. (2007). Relationship between nodule size and conventional nodulation measurements - DOI: 10.4025/actasciagron.v29i1.65. Acta Scientiarum. Agronomy, 29(1), 47-54. https://doi.org/10.4025/actasciagron.v29i1.65

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Issue

Vol 29 No 1 (2007)

Section

Crop Production

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