African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6860

Full Length Research Paper

Growth of Khaya senegalensis plant under water deficit

Fábio Santos Matos*
  • Fábio Santos Matos*
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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Patrícia Souza da Silveira
  • Patrícia Souza da Silveira
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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Vitor Corrêa de Mattos Barretto
  • Vitor Corrêa de Mattos Barretto
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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Igor Alberto Silvestre Freitas
  • Igor Alberto Silvestre Freitas
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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Matheus da Silva Araujo
  • Matheus da Silva Araujo
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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José Eduardo Dias Calixto Junior
  • José Eduardo Dias Calixto Junior
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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Jovan Martins Rios
  • Jovan Martins Rios
  • State University of Goiás, Campus Ipameri, GO Highway 330, km 241, Beltway Zip code: 75780-000, Brazil.
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  •  Received: 19 February 2015
  •  Accepted: 17 March 2016
  •  Published: 05 May 2016

Abstract

The objective of the present study was to evaluate the initial growth of Khaya senegalensis plants under water deficit. The work was carried out at Ipameri, Goiás on a bench in full sun following the completely randomized experimental design with six treatments and six replications. 120-day-old mahogany plants (Khaya senegalensis) grown in eight-liter pots were subjected to six treatments for 12 days (plants irrigated daily with 100, 80, 60, 40, 20 and 0% of evapotranspiration) with six replications. At 132 days after emergence, the plants were assessed for: plant height, stem diameter, number of leaves, foliar area, daily transpiration, relative water content, total chlorophylls and carotenoids, leaf, stem and root mass ratios, and total biomass. The data were submitted to F-test and, when significant, to regression test at 5% probability. High stomatal control, reduced transpiration, low leaf concentration of total chlorophylls and increased root system growth to the detriment of the shoot growth indicate that Khaya senegalensis is tolerant to moderate water deficit.

Key words: Silviculture, wood noble, forest physiology.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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