In vitro growth of sweet potato fed with potassium phosphite - doi: 10.4025/actasciagron.v34i1.10810

Edison Hitoshi Hirosse; José Eduardo Creste; Ceci Castilho Custódio; Nelson Barbosa Machado-Neto

doi:10.4025/actasciagron.v34i1.10810

In vitro growth of sweet potato fed with potassium phosphite - doi: 10.4025/actasciagron.v34i1.10810

Edison Hitoshi Hirosse Universidade do Oeste Paulista - UNOESTE
José Eduardo Creste Universidade do Oeste Paulista - UNOESTE
Ceci Castilho Custódio Universidade do Oeste Paulista - UNOESTE
Nelson Barbosa Machado-Neto Universidade do Oeste Paulista - UNOESTE

DOI: https://doi.org/10.4025/actasciagron.v34i1.10810

Abstract

The main objective of this work was to verify the effect of the substitution of phosphate by its related compound phosphite on the in vitro growth of sweet potato nodal segments. Segments from a previous culture were incubated in MS media with the following combinations of phosphate:phosphite: Control (100 / 0%); T1 (87.5 / 12.5%); T2 (75 / 25%); T3 (50 / 50%) and T4 (0 / 100%) in a 5 x 5 factorial arrangement, with five treatments (Control, T1, T2, T3 and T4) and five evaluation periods (7, 14, 21, 28 and 35 days). The design was completely random, with three replicates of two explants per period. The evaluations were made weekly by counting the number of shoots and the length and dry weight of shoots and roots. Increasing the phosphite concentration decreased all attributes measured, including growth velocity, length and dry weight. These results indicate that phosphite cannot be used as substituted of phosphate in sweet potato tissue cultures.

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Author Biography

Nelson Barbosa Machado-Neto, Universidade do Oeste Paulista - UNOESTE

lson Barbosa Machado Neto concluiu o doutorado em Ciências Biológicas (Biologia Vegetal) [Rio Claro] pela Universidade Estadual Paulista Júlio de Mesquita Filho em 1999. Atualmente é professor titular da Universidade do Oeste Paulista. Publicou 25 artigos em periódicos especializados e 30 trabalhos em anais de eventos. Orientou 3 dissertações de mestrado, 4 trabalhos de iniciação científica e 12 trabalhos de conclusão de curso nas áreas de Agronomia, Botânica, Genética e Bioquímica. Recebeu 3 prêmios e/ou homenagens. Atua na área de Agronomia, com ênfase em Melhoramento Vegetal. Em suas atividades profissionais interagiu com 33 colaboradores em co-autorias de trabalhos científicos. Em seu currículo Lattes os termos mais freqüentes na contextualização da produção científica, tecnológica e artístico-cultural são: germinação, vigor, Phaseolus vulgaris, estresse, orquídeas, sementes, estresse hídrico, Feijão, Glycine max e cultura de tecidos Currículo Lattes

Published

2011-07-06

How to Cite

Hirosse, E. H., Creste, J. E., Custódio, C. C., & Machado-Neto, N. B. (2011). In vitro growth of sweet potato fed with potassium phosphite - doi: 10.4025/actasciagron.v34i1.10810. Acta Scientiarum. Agronomy, 34(1), 85-91. https://doi.org/10.4025/actasciagron.v34i1.10810

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Issue

Vol 34 No 1 (2012)

Section

Crop Production

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