Data/hora: 16/06/2024 07:14:46

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 05/12/2019
Data da última atualização: | 06/12/2019
Autoria: | MOREIRA, B. R. de A.; VIANA, R. da S.; LISBOA, L. A. M.; LOPES, P. R. M.; FIGUEIREDO, P. A. M.; RAMOS, S. B.; BONINI, C. S. B.; TRINDADE, V. D. R.; ANDRADE, M. G. de O.; MAY, A.
Afiliação: | BRUNO RAFAEL DE ALMEIRA MOREIRA, FEIS-UNESP; RONALDO DA SILVA VIANA, FCAT-UNESP; LUCAS APARECIDO MANZANI LISBOA, FCAT-UNESP; PAULO RENATO MATOS LOPES, FCAT-UNESP; PAULO ALEXANDRE MONTEIRO DE FIGUEIREDO, FCAT-UNESP; SÉRGIO BISPO RAMOS, FACT-UNESP; CAROLINA DOS SANTOS BATISTA BONINI, FCAT-UNESP; V D R TRINDADE, FEIS-UNESP; M G O ANDRADE, FEIS-UNESP; ANDRE MAY, CNPMA.
Título: | Jasmonic acid and K-phosphite enhance productivity and technological quality of sugarcane crop.
Ano de publicação: | 2019
Fonte/Imprenta: | Journal of Agricultural Science, v. 11, n. 14, p. 254-264, 2019.
ISSN: | 1916-9760
Idioma: | Inglês
Conteúdo: | Abstract: Plant resistance inducers are cost-effective and environmentally pleasing strategies of plant protection to mitigate biotic and abiotic agents threatening food safety and energy security. We, accordingly, present jasmonic acid and k-phosphite as low-cost strategies to enhance productive yield and technological quality of sugarcane crop. Exogenously treatment of the sugarcane variety SP81-3250 consisted of carrying out foliar application of jasmonic acid at 1, 1.5 and 2 ml L-1 and K-phosphite at 2, 4 and 6 ml L-1 before crop flowering. Interestingly, both systemic phytorregulator and foliar fertilizer at the lowest doses significantly improved contents of total soluble solids and sucrose, as well as productive yield of fermentable sugars. Jasmonic acid could promote growth and development by triggering either non-enzymatic or enzymatic mechanisms in the host self-defense system to support of external stresses, including herbivory by sugarcane-borer. K-phosphite could improve crop performance by not only releasing water-soluble inorganic ions like phosphorus and potash, but also by signaling synthesis of phytoalexins. Purity of cane juice and productivity of stalks sharply decreased, as the doses of the plant-resistance inducers increased. Jasmonic acid and k-phosphite at unbalanced endogenous levels could inhibit physiological ripening and specific enzymatical activity of alkaline invertases and sucrose-phosphate synthase, thereby influencing bioavailability of sucrose. The lower the sucrose content, the poorer the technological quality of sugarcane crop. The conclusion is, therefore, jasmonic acid and K-phosphite at lower doses prove to be effective induced resistance techniques to produce richer feedstock, with potential to produce ethanol fuel and refined sugar in sugar-energy plants.
Palavras-Chave: | Host self-defense system; Induced resistance technique; Jasmonate-methyl; Phytohormone; Plant-resistance elicitor; Saccharum sp.
Thesagro: | Cana de Açúcar; Nutriente Mineral; Regulador de Crescimento; Resistência; Sacarose.
Thesaurus Nal: | Induced resistance; Jasmonic acid; Potassium phosphite; Sucrose; Sucrose-phosphate synthase; Sugarcane; Sugarcane juice.
Categoria do assunto: | H Saúde e Patologia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/206347/1/May-Jasmonic-Acid-2019.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16566-1) - UPC - AP - DD -  -  -  - DIS