Journal of Plant Breeding and Crop Science
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Article Number - 7039E1F55334


Vol.10(1), pp. 13-20 , January 2018
https://doi.org/10.5897/JPBCS2017.0690
ISSN: 2006-9758


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Full Length Research Paper

Performance of Solanum aethiopicum Shum group accessions under repetitive drought stress



Mildred Julian Nakanwagi
  • Mildred Julian Nakanwagi
  • Department of Agricultural and Biological Sciences, Faculty of Science and Technology, Uganda Christian University, P. O. Box 4, Mukono, Uganda.
  • Google Scholar
Godfrey Sseremba
  • Godfrey Sseremba
  • Department of Agricultural and Biological Sciences, Faculty of Science and Technology, Uganda Christian University, P. O. Box 4, Mukono, Uganda.
  • Google Scholar
Michael Masanza
  • Michael Masanza
  • Department of Agricultural and Biological Sciences, Faculty of Science and Technology, Uganda Christian University, P. O. Box 4, Mukono, Uganda.
  • Google Scholar
Elizabeth Balyejusa Kizito
  • Elizabeth Balyejusa Kizito
  • Department of Agricultural and Biological Sciences, Faculty of Science and Technology, Uganda Christian University, P. O. Box 4, Mukono, Uganda.
  • Google Scholar







 Received: 07 September 2017  Accepted: 23 October 2017  Published: 31 January 2018

Copyright © 2018 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Drought is a serious climatic hazard to crop production, more especially when it occurs repeatedly. This created a need to identify repetitive drought tolerant varieties that recover following exposure to drought. Twenty accessions of Solanum aethiopicum Shum group were evaluated for their response to repeated drought exposure in a screen house at Uganda Christian University stressed and well-watered conditions in a split-plot arrangement. Data was collected on growth and yield parameters namely leaf area, plant canopy width, plant height, plant branching, fresh leaf weight, fresh shoot biomass, and harvest index. Exposure of plants to repetitive drought stress led to significant decrease in all evaluated growth parameters at p<0.001 except for plant branching. Similarly, yield parameters exhibited a highly significant difference among accessions and between water levels at p<0.001. Principal component analysis of growth rate traits showed that leaf area contributed to the highest variation for recovery from repetitive drought stress among accessions. The accessions that recovered best from drought stress include SAS108/2015, SAS163/P/2015, SAS183/G/2015, and SAS168/G/2015. For yield parameters, the accessions SAS137/2015, SAS148/2015, SAS108/P/2015, and SAS160/2015 had the highest dry shoot biomass. These findings indicate prospect for improvement of tolerance to repetitive drought stress in S. aethiopicum Shum group.

Key words: African eggplant, leafy vegetable, drought tolerance, principal component analysis, growth response.

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APA Nakanwagi, M. J., Sseremba, G., Masanza, M., & Kizito, E. B. (2018). Performance of Solanum aethiopicum Shum group accessions under repetitive drought stress. Journal of Plant Breeding and Crop Science, 10(1), 13-20.
Chicago Mildred Julian Nakanwagi, Godfrey Sseremba, Michael Masanza and Elizabeth  Balyejusa Kizito. "Performance of Solanum aethiopicum Shum group accessions under repetitive drought stress." Journal of Plant Breeding and Crop Science 10, no. 1 (2018): 13-20.
MLA Mildred Julian Nakanwagi, et al. "Performance of Solanum aethiopicum Shum group accessions under repetitive drought stress." Journal of Plant Breeding and Crop Science 10.1 (2018): 13-20.
   
DOI https://doi.org/10.5897/JPBCS2017.0690
URL http://www.academicjournals.org/journal/JPBCS/article-abstract/7039E1F55334

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