Efficiency in the use of phosphorus by common bean genotypes

Autores/as

  • Daiana Alves da Silva Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program
  • José Antônio de Fátima Esteves Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program
  • Ueliton Messias Embrapa Mid-North; UEP
  • Aurélio Teixeira Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program
  • João Guilherme Ribeiro Gonçalves Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program
  • Alisson Fernando Chiorato Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program
  • Sérgio Augusto Morais Carbonell Agronomic Institute; Center of Grain and Fiber; Commom Bean Breeding Program

DOI:

https://doi.org/10.1590/S0103-90162014000300008

Resumen

Common bean (Phaseolus vulgaris L.) is frequently grown in weathered soils with low phosphorus (P) availability, and this is one of the main limitations on its production. This study aimed to assess 20 common bean genotypes in a hydroponic system to select the best P concentration for inducing nutritional deficiency and to classify the genotypes in terms of nutrient utilization efficiency. The concentrations of P applied were 8.00, 4.00, 2.00 and 0.05 mg L¹. At 21 days, in the plot subjected to an application of the most severe stress, the 0.05 mg L¹ dose of P, had smaller plant size and early leaf abscission was observed. The 4.00 mg L¹ dose of P was the most efficient in inducing stress for discrimination of cultivars in terms of efficiency of use of P. The following genotypes: IAPAR 81, Carioca Comum, IAC Carioca Tybatã, IAC Imperador and G 2333 stood out as being efficient and responsive to P, while the two cultivars DOR 364 and Jalo Precoce were the most inefficient and unresponsive.

Descargas

Los datos de descarga aún no están disponibles.

Descargas

Publicado

2014-06-01

Número

Sección

Genetics and Plant Breeding

Cómo citar

Efficiency in the use of phosphorus by common bean genotypes . (2014). Scientia Agricola, 71(3), 232-239. https://doi.org/10.1590/S0103-90162014000300008