SciELO - Scientific Electronic Library Online

 
vol.71 número3Seed size-number trade-off in Euterpe edulis in plant communities of the Atlantic ForestRecurrent mass selection for upright plant architecture in common bean índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Scientia Agricola

versão On-line ISSN 1678-992X

Resumo

SILVA, Daiana Alves da et al. Efficiency in the use of phosphorus by common bean genotypes. Sci. agric. (Piracicaba, Braz.) [online]. 2014, vol.71, n.3, pp.232-239. ISSN 1678-992X.  https://doi.org/10.1590/S0103-90162014000300008.

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.

Palavras-chave : Phaseolus vulgaris L.; phosphorus nutrition; classification of genotypes for P; hydroponics; P deficiency.

        · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons