Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 447

Article in Press

Genetic Variability for Tolerance against Aluminum Toxicity of Selected Common Bean Genotypes

Kamfwa Kelvin, Sydney Pimpa, Swivia Hamabwe, Kuwabo Kuwabo, Mangimela Bangotse

  •  Received: 02 February 2024
  •  Accepted: 31 May 2024
Aluminum (Al) toxicity is a major production constraint of common bean (Phaseolus vulgaris L.) in Africa and Latin America. Identification of tolerant genotypes is critical to supporting breeding efforts of Al-tolerant varieties. The objective of this study was to evaluate Andean genotypes for tolerance to Al toxicity. Nineteen Andean genotypes and Al-resistant check ALB91 were evaluated for seedling Al tolerance in hydroponic system in the screen house at University of Zambia. Root length (RL), root dry weight (RDW), and number of lateral roots (NLR) were measured. Percentage reductions in RL, RDW and NLR were computed, and used as indices for tolerance to Al toxicity. Significant genetic variability for Al toxicity tolerance was observed among the 19 genotypes. The genotype PI527538 showed superior Al tolerance as it recorded the smallest percentage reduction in RL and NLR among the evaluated 19 genotypes and check. PI527538 is an Andean and yellow-seeded genotype originally from East Africa that can be used by the bean breeding community to develop Al-tolerant varieties in different Andean market classes.

Keywords: Aluminum, Andean, common bean, tolerance, toxicity