African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Physiological and agronomic characteristics of cassava genotypes

Douglas Goncalves Guimaraes
  • Douglas Goncalves Guimaraes
  • Graduate Program in Agronomy, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Caio Jander Nogueira Prates
  • Caio Jander Nogueira Prates
  • Graduate Program in Agronomy, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Anselmo Eloy Silveira Viana
  • Anselmo Eloy Silveira Viana
  • Department of Plant and Animal Science, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Adriana Dias Cardoso
  • Adriana Dias Cardoso
  • CAPES/FAPESP, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Vanderlei da Silva Santos
  • Vanderlei da Silva Santos
  • Embrapa Cassava and Fruticulture, Cruz das Almas, Bahia, Brazil.
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Sylvana Naomi Matsumoto
  • Sylvana Naomi Matsumoto
  • Department of Plant and Animal Science, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Quelmo Silva de Novaes
  • Quelmo Silva de Novaes
  • Department of Plant and Animal Science, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Nelson dos Santos Cardoso Junior2
  • Nelson dos Santos Cardoso Junior2
  • Department of Plant and Animal Science, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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Sandro Correia Lopes
  • Sandro Correia Lopes
  • Department of Plant and Animal Science, State University of Southwest Bahia, Vitória da Conquista, Bahia, Brazil.
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  •  Received: 21 October 2016
  •  Accepted: 19 January 2017
  •  Published: 02 February 2017

Abstract

This experiment was conducted with the objective of evaluating physiological and agronomic characteristics of cassava genotypes in the municipality of Cândido Sales, State of Bahia, Brazil, between October 2010 and August 2012. Complete randomized block design was used, with three replications and 28 treatments formed by genotypes Amansa Burro, Aramaris, Bom Jardim, Bromadeira, Caipira, Caitité, Caravela, Kiriris, Lagoão, Lavra Velha, Malacacheta, Mulatinha, Parazinha, Peru, Poti Branca, Salangor, Sergipe, Sergipe, Simbé, Tapioqueira, Tussuma, Verdinha, 2006-4, 2006-5, 2006-8, 2006-10 and 2006-12, coming from UESB, EMBRAPA and farmers in the region. Sergipe genotype is present in two treatments, one planted with cuttings collected from local farmers only called Sergipe, and another called Sergipe MR planted with cuttings originated from the rapid multiplication method. The crop spacing used was 1.0 x 0.6 m and each plot composed by 60 plants, being 26 plants considered useful. The evaluations were performed at the end of the first crop cycle, in July 2011, and the harvest in August 2012, twenty-two months after planting. The higher total leaf area and the high photosynthetically active radiation absorbed by the plants canopy at the end of the first crop cycle were correlated to an increase of productivity of shoot and dry weight of root. There was no change in leaf water potential among the genotypes. The genotypes Caipira, Poti Branca, Verdinha and Sergipe from cuttings obtained by the rapid multiplication method showed high productivity for tuberous roots associated to a higher dry matter values. A greater starch yield was observed in genotypes 2006-5, Verdinha, Malacacheta, Poti Branca, Caipira, 2006-10, Sergipe MR, Parazinha and Mulatinha, thus, they might be future alternatives for regional cultivation for industrial production.

Key words: Manihot esculenta Crantz, water potential, leaf area, varieties, tuberous root, starch.