Beneficial Effect of Exogenously Applied Calcium Pyruvate in Alleviating Water Deficit in Sugarcane as Assessed by Chlorophyll a Fluorescence Technique
Author:
Dias Mirandy dos Santos1, da Silva Francisco de Assis1ORCID, Fernandes Pedro Dantas1, Farias Carlos Henrique de Azevedo1, de Lima Robson Felipe1ORCID, da Silva Maria de Fátima Caetano1, Lima Vitória Régia do Nascimento1ORCID, de Lima Andrezza Maia1, de Lacerda Cassiano Nogueira1, Reis Lígia Sampaio2, Souza Weslley Bruno Belo de1, Silva André Alisson Rodrigues da1ORCID, Arruda Thiago Filipe de Lima1ORCID
Affiliation:
1. Unidade Acadêmica de Engenharia Agrícola—UAEA, Centro de Tecnologia e Recursos Naturais—CTRN, Universidade Federal de Campina Grande–UFCG, Campus Campina Grande, Campina Grande 58428-830, PB, Brazil 2. Campus de Engenharias e Ciências Agrárias—CECA, Universidade Federal de Alagoas—UFAL, Rio Largo 57100-000, AL, Brazil
Abstract
The growing demand for food production has led to an increase in agricultural areas, including many with low and irregular rainfall, stressing the importance of studies aimed at mitigating the harmful effects of water stress. From this perspective, the objective of this study was to evaluate calcium pyruvate as an attenuator of water deficit on chlorophyll a fluorescence of five sugarcane genotypes. The experiment was conducted in a plant nursery where three management strategies (E1—full irrigation, E2—water deficit with the application of 30 mM calcium pyruvate, and E3—water deficit without the application of calcium pyruvate) and five sugarcane genotypes (RB863129, RB92579, RB962962, RB021754, and RB041443) were tested, distributed in randomized blocks, in a 3 × 5 factorial design with three replications. There is dissimilarity in the fluorescence parameters and photosynthetic pigments of the RB863129 genotype in relation to those of the RB041443, RB96262, RB021754, and RB92579 genotypes. Foliar application of calcium pyruvate alleviates the effects of water deficit on the fluorescence parameters of chlorophyll a and photosynthetic pigments in sugarcane, without interaction with the genotypes. However, subsequent validation tests will be necessary to test and validate the adoption of this technology under field conditions.
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
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