Abstract

A cana-de-açÛcar é uma das maiores commodities agrícolas, quando se considera о volume de exportaçao e о número de empregos gerades. A produçao no Nordeste brasileiro, em gerai, é baixa, decorrente de diversos fatores, entre eles, a irregularidade de distribuiçao das chuvas, o que realça a importancia de estudos com vistas a minorar os efeitos deletérios do estresse hídrico. Nesse cenârio, objetivou-se avahar o piruvato de calcio como atenuante do déficit hídrico sobre a qualidade agroindustrial da cana-de-açÛcar no segundo ciclo de cultivo. O experimento foi conduzido em casa de vegetaçao da Universidade Federal de Campiña Grande, onde foram testados cinco genotipos de cana-de-açÛcar (GI - RB863129, G2- RB92 579, G3- RB962962, G4- RB021754 e G5- RB041443) submetidos a trés estrategias de manejo da irrigaçao (El- Irrigaçao plena, E2- déficit hídrico com aplicaçao de 30 mM de piruvato de calcio e E3- déficit hídrico sem aplicaçao de piruvato de calcio), distribuidos em blocos casualizados, em esquema fatorial 5x3, com trés repetiçöes. O genotipo RB021754 sob déficit hídrico e sem aplicaçao foliar do piruvato de calcio aumentou o teor de fibra (13,2%) e o peso do bolo úmido da cana (143,5 g). Os efeitos do déficit hídrico em genotipos de cana-de-açÛcar säo atenuados com aplicaçao exogena de 30 mM de piruvato de calcio, com beneficios sobre o teor sacarose polarizada, teor de sacarose aparente do caldo, teor de sólidos solúveis, pureza, pol da cana corrigida, açÛcares totais recuperâveis e massa de colmos, em relaçao as plantas sob déficit hídrico sem aplicaçao de piruvato de calcio.

Alternate abstract:

Sugarcane is one of the largest agricultural commodities when considering the export volume and the number of jobs generated. Sugarcane production in the Brazilian Northeast region is generally low due to several factors, including the irregular rainfall distribution, which highlights the importance of studies aimed at mitigating the deleterious effects of water stress. In this scenario, this study aimed to evaluate calcium pyruvate as a water deficit attenuator on the agro-industrial quality of sugarcane in the second cycle of cultivation. The experiment was conducted out under greenhouse conditions of the Federal University of Campiña Grande, where five sugarcane commercial genotypes tested (GI- RB863129, G2- RB92579, G3- RB962962, G4- RB021754, and G5- RB041443) and three irrigation management strategies (El - full irrigation, E2- water deficit with application of 30 mM of calcium pyruvate, and E3- water deficit without calcium pyruvate application), distributed in randomized blocks in 5 x 3 factorial arrangement with three replications. The RB021754 genotype under water deficit and without foliar application of calcium pyruvate increased the fiber content (13.2%) and the sugarcane moist cake weight (143.5 g). The effects of water deficit in sugarcane genotypes are attenuated by the exogenous application of 30 mM of calcium pyruvate, with benefits on the polarized sucrose content, apparent sucrose content of the juice, soluble solids content, purity, corrected cane POL, total recoverable sugars, and stem mass in relation to plants under water deficit without calcium pyruvate application.

Details

Title
Calcium pyruvate in the attenuation of the water deficit on the agro-industrial quality of ratoon sugarcane
Author
Dias, M S 1 ; Silva, F A 1 ; Fernandes, P D 1 ; Farias, C H A 1 ; Silva, I J 1 ; Silva, M F C; Lima, R F; Lacerda, C N; Lima, A M; Lima, V R N; Silva, A A R; Reis, L S

 Universidade Federal de Campiña Grande - UFCG, Unidade Académica de Engenharia Agrícola - UAEA, Centro de Tecnología e Recursos Naturais - CTRN, Campiña Grande, PB, Brasil 
Pages
1-9
Section
Original Article
Publication year
2023
Publication date
2023
Publisher
Instituto Internacional de Ecologia
ISSN
15196984
e-ISSN
16784375
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2880426357
Copyright
© 2023. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.