response of micropropagated sugarcane varieties to inoculation with endophytic diazotrophic bacteria resposta da inoculação com bactérias diazotróficas endofíticas em duas variedades micropropagadas de cana-de-açúcar

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ID: 186230
2003
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Abstract
Previous studies estimated that sugarcane could obtain up to 60% of total nitrogen accumulated from BNF. Here a mixture of five endophytic diazotrophic strains was tested in a field trial, inoculated in two micropropagated sugarcane varieties and three locals, to determine the effects on commercial crop conditions. The sugarcane plantlets were inoculated in vitro, and after 17 months of growing in the field, the productivity and BNF contribution showed to be influenced by the plant genotype and soil type. The highest BNF contributions was observed in the poorest soil for both varieties. Smaller increases in productivity were observed for SP 701143 variety grown in soil with low or medium fertility. In contrast, a decrease in the stem productivity was observed in the SP 813250 variety grown in the three localities.
Experimentos anteriores estimaram que a cana-de-açúcar pode obter até 60% do N acumulado via fixação biológica de nitrogênio (FBN). Neste trabalho, os efeitos da inoculação da mistura de cinco espécies de bactérias diazotróficas endofíticas foram testados em duas variedades de cana-de-açúcar micropropagadas, sob condições de campo. Após 17 meses de crescimento, a produtividade e a FBN apresentaram influência do genótipo vegetal e da localidade de cultivo. As maiores contribuições via FBN foram observadas no solo de menor fertilidade, para ambas variedades de cana-de-açúcar. Pequenos aumentos de produtividade foram observados para a variedade SP 701143 nos solos de baixa e média fertilidade. Por outro lado, a inoculação na variedade SP 813250 apresentou decréscimo de produtividade nos três tipos de solo testados.
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oliveira2003brazilianresponse Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;André Luiz Martinez de Oliveira;Erineudo de Lima Canuto;Verônica Massena Reis;José Ivo Baldani
Journal ieee software
Year 2003
DOI
10.1590/S1517-83822003000500020
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500020
Keywords
biological nitrogen fixation

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