Productive response of Phaseolus vulgaris commercial cultivarsunder drought conditions
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Abstract
The selection of drought-tolerant common bean cultivars can be a strategy to minimize the
effect of water deficit on yield and bean quality. The aim of the present work was to select
common bean cultivars with the best productive response under water stress conditions. For
this purpose, an experiment was carried out with three common bean cultivars with red testa
(‘Buenaventura’, ‘Velazco Largo’, and ‘Delicias-364’), under different soil moisture conditions at
the Cooperativa de Créditos y Servicios (CCS) “Gustavo Ameijeiras”, in the municipality of
Limonar, Matanzas. Agricultural yield indicators were evaluated under different irrigation
conditions, five irrigations (drought), and 10 irrigations (optimum moisture conditions). With
the agricultural yield data, in the two moisture conditions, the percentage of agricultural yield
losses, drought intensity index and drought susceptibility index (ISS) were calculated. It was
concluded that drought under experimental conditions produced a direct effect on the
agricultural yield of the cultivars and the evaluated indices. The cultivar ‘Delicias-364’ was the
most tolerant to water deficit, since it had the lowest percentage reduction in yield and ISS less
than one. The cultivar ‘Velazco Largo’ showed the lowest tolerance, with 32% yield loss and an
ISS greater than one.
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