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Cultivos Tropicales
versión On-line ISSN 1819-4087
Resumen
BOICET-FABRE, Tony et al. Evaluation of different indices tolerance to drought based on multivariate analysis. cultrop [online]. 2018, vol.39, n.1, pp. 61-67. ISSN 1819-4087.
ABSTRACT Under two different irrigation conditions, yield of ten Cubans cultivars of bean (Phaseolus vulgaris L.), were evaluated with the objective of evaluating different drought tolerance indices based on multivariate analysis in such a way that contribute to the interpretation of its effectiveness to discriminate tolerance variety to drought. The experimental design was completely randomized and four replications, grain yield under drought and irrigated conditions was evaluated and used to calculate stress indices: tolerance indice (TOL), stress susceptibility indice (SSI), geometric mean production (MPG), mean production (MP), stress tolerance indice (STI), drought resistance indice (DI), relative drought indice (RDI), sensitivity drought indice (SDI) and abiotic tolerance indice (ATI), principal component, cluster, correlation and descriptive analysis between grain yield in both conditions were calculated. In this study softly demonstrated that each indice contribute to identify variety with drought tolerance, and multivariate analysis contribute to interpreter of indices effectiveness, and it is advisable to combine the multivariate analysis and use several índices, due to difference in occasion of the results obtained in the discrimination of variety to drought
Palabras clave : cultivars; bean; Phaseolus vulgaris L; grain yield; drought response.