Evaluation of Common Bean ( Phaseolus vulgaris L.) Genotypes for Adaptation to Low Phosphorus

  • Mourice S
  • Tryphone G
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Abstract

Common bean production in Tanzania is constrained by soil phosphorus which is mainly due to inherently low phosphorus content, soil erosion, and fixation by oxides in acidic soils. A study was conducted to evaluate bean genotypes in a screen house pot experiment for their ability to thrive and produce on low phosphorus soil. Assessment of shoot biomass, root biomass, shoot P concentration, P uptake, and yield components was done using three phosphorus levels and seven bean genotypes. Phosphorus levels, namely, control (P0), medium P (40 mg P/kg), and high P (160 mg P/kg), were the main plot factor, while the genotypes were the subplot in split plot structure, arranged in a completely randomized design. Shoot and root biomass as well as P uptake increased significantly with increase in phosphorus levels. There was varying response of genotypes in performance in terms of shoot biomass P uptake, and yield in a treatment without P addition. Genotypes MILENIO, BAT477 , and A785 were outstanding in terms of root and shoot biomass, P uptake and grain yield under low P treatment. Therefore, those genotypes can be recommended for use in low-phosphorus environment as well as breeding materials.

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Mourice, S. K., & Tryphone, G. M. (2012). Evaluation of Common Bean ( Phaseolus vulgaris L.) Genotypes for Adaptation to Low Phosphorus . ISRN Agronomy, 2012, 1–9. https://doi.org/10.5402/2012/309614

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