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Journal of Experimental Agriculture International

Journal of Experimental Agriculture International, ISSN: 2457-0591, ISSN: 2231-0606 (Past),Vol.: 19, Issue.: 1

Original-research-article

Changes of Photosynthetic and Antioxidant Activity of Phaseolus vulgaris to Potassium

 

Virgílio Gavicho Uarrota1,2*, Cristiane Segatto1, Camila Pereira Barbosa1, Daicon Godeski Moreira1, Deivid L. V. Stefen1, Emanuel Mattos1, Gustavo Viana Junkes1, Camila Corrêa1, Marcelo Eduardo Tormem1, Maira Maier Bisato1, Cileide Maria Medeiros Coelho2 and Clovis Arruda Souza1

1Laboratory of Crop Plants, Department of Agronomy, Agroveterinary Science Center, Postgraduate Program in Plant Production, University of the State of Santa Catarina, Luiz de Camões Avenue 2090, 88520-000, Lages, Santa Catarina, Brazil.

2Laboratory of Seed Analysis, Department of Agronomy, Agroveterinary Science Center, Postgraduate Program in Plant Production, University of the State of Santa Catarina, Luiz de Camões Avenue 2090, 88520-000, Lages, Santa Catarina, Brazil.

 

Article Information
Editor(s):
(1) Biljana Bojovic, Assistant Professor, Faculty of Science, Institute of Biology and Ecology, University of Kragujevac, Republic of Serbia.
Reviewers:
(1) Ramazan Dogan, Türkiye.
(2) Öner Canavar, Adnan Menderes University, Turkey.
Complete Peer review History: http://www.sciencedomain.org/review-history/22169

 

Abstracts

 

Greenhouse experiment was conducted with two cultivars of common beans and four concentrations of potassium (1, 2, 10 and 20 millimolar –mM ) were supplied to the soil pots aiming to access variations in plant antioxidant defense systems (secondary metabolites and enzymatic mechanisms), growth parameters and leaf gas-exchange measurements. The total fresh leaf mass increased in both cultivars from 1 to 10 mM of potassium and the dry matter content decreased from 1 to 20 mM. Root volume significantly increased in Uirapuru cultivar. Potassium increased chlorophyll A in both in the range of 1 to 10 Mm. Catalase activity and carotenoids increased only in Dama cultivar. Potassium increased the photosynthetic activity in cultivar-dependent manner. Cultivar ‘Dama’ showed higher intrinsic water use efficiency, NDVI index, chlorophyll contents, total leaf mass and higher catalase activity. If the selection of cultivar under those traits is aimed, ‘Dama’ cultivar is a candidate and presented a linear stomatal conductance model.

 

Keywords :

Common beans; potassium nutrition; photosynthesis; stomatal conductance models; growth parameters; antioxidant defense mechanisms; phenolics; normalized vegetative index; catalase.

 

Full Article - PDF    Supplementary Files    Page 1-22    Article Metrics

 

DOI : 10.9734/JEAI/2017/36359

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