alexa Physiology and Grain Yield of Common Beans under Evapotranspirated Water Reposition Levels
ISSN: 2168-9768

Irrigation & Drainage Systems Engineering
Open Access

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Research Article

Physiology and Grain Yield of Common Beans under Evapotranspirated Water Reposition Levels

Magalhaes ID1*, Lyra GB1, Souza JL2, Teodora I3, Cavalcante CA3, Ferreira RA4 and Souza RC3

1Department of Plant production, Federal University of Alagoas, Brazil

2Department of Agronomy, Federal University of Alagoas, Brazil

3Department of Agricultural engineering, Federal University of Alagoas, Brazil

4Department of Phytotechnology, Federal University of Alagoas, Brazil

*Corresponding Author:
Magalhaes ID
Doctorate in Agronomy-Plant Production
Department of Plant Production
Federal University of Alagoas, Brazil
Tel: 82 3261-3470
E-mail: [email protected]

Received Date: April 12, 2017; Accepted Date: April 29, 2017; Published Date: May 05, 2017

Citation: Magalhaes ID, Lyra GB, Souza JL, Teodora I, Cavalcante CA, et al. (2017) Physiology and Grain Yield of Common Beans under Evapotranspirated Water Reposition Levels. Irrigat Drainage Sys Eng 6: 183. doi: 10.4172/2168-9768.1000183

Copyright: © 2017 Magalhaes ID, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The aim of this work was to evaluate gas exchanges, photochemical efficiency and yield of common bean grains (crioula variety) grown under different irrigation levels in the state of Alagoas. The experimental design was a randomized block design with four replications. Treatments were composed of crop evapotranspiration fractions (25, 50, 75, 100, 125 and 150% of crop evapotranspiration). Gas exchanges were determined from measurements of internal CO2 concentration, transpiration, stomata conductance, photosynthetic rate, instantaneous water use efficiency and instantaneous carboxylation efficiency. Chlorophyll a fluorescence evaluations were determined through the potential and effective quantum yield of photosystem II. Chlorophyll content was indirectly measured. The following production components were evaluated: number of pods per plant, number of grains per pods, mass of 1000 grains and grain yield. The water application variation promoted a significant difference for gas exchanges, causing a reduction in the potential and effective photochemical efficiency of common bean. The increase in the application of the irrigation levels directly influenced the SPAD index and the following production components: number of pods per plant and grain yield, obtaining significant values with irrigation level of 125% of ETc.

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