Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/38231
Title: Crescimento de girassol em função da inoculação de sementes com bactérias endofíticas
Keywords: Helianthus annuus L.
Bacillus sp.
Enterobacter cloacae
Mineral nutrition
Water deficit
Nutrição mineral
Défice hídrico
Issue Date: 2014
Publisher: Universidade Federal de Goiás
Citation: SANTOS, J. F. dos et al. Crescimento de girassol em função da inoculação de sementes com bactérias endofíticas. Pesquisa Agropecuária Tropical, Goiânia, v. 44, n. 2, p. 142-150, abr./jun. 2014.
Abstract: The sunflower crop has a great importance worldwide, due to the oil of excellent quality extracted from its seeds and in natura grains that are consumed in various ways. However, drought is one of the main environmental factors that limit its yield. An experiment was carried out under controlled greenhouse conditions, in a completely randomized experimental design, in order to determine the effect of endophytic bacteria inoculation (Bacillus sp. and Enterobacter cloacae) on the growth and contents of nutrients and organic solutes, in sunflower leaves and roots under water deficit. Plant height, stem diameter, fresh and dry biomass of shoot and roots, as well as contents of N, P, K, soluble carbohydrates, free proline, free amino acids and soluble proteins, were determined at 35 days after the plant emergence. The water deficit reduced plant growth regardless inoculation. However, under optimum conditions of soil moisture, the combination of both endophytic bacteria increased the sunflower growth. The water deficit also increased the N and K contents in leaves, as well as the organic solutes content in shoots, especially in inoculated plants. These results suggest that the inoculation of endophytic bacteria may increase the capacity of drought stressed plants to perform the osmotic adjustment through a higher accumulation of organic solutes, when compared to plants not inoculated.
URI: http://repositorio.ufla.br/jspui/handle/1/38231
Appears in Collections:DFP - Artigos publicados em periódicos



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