Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/14985
Título: Selection indices to identify drought-tolerant grain sorghum cultivars
Autor: Menezes, Cícero Beserra de
Ticona-Benavente, César Augusto
Tardin, Flávio Dessaune
Cardoso, Mílton José
Bastos, Edson Alves
Nogueira, Douglas Willian
Portugal, Arley Figueiredo
Santos, C. V.
Schaffert, Robert Eugene
Palavras-chave: Analytic Method
Cultivar
Drought Stress
Drought Tolerance
Genotype
Geometric Mean Productivity
Grain Yield
Harmonic Mean
Mathematical Computing
Mean Productivity
Nonhuman
Physical Parameters
Plant Parameters
Sorghum
Stability Tolerance Index
Stress Susceptibility Index
Tolerance Index
Yield Index
Yield Stability Index
Adaptation
Cluster Analysis
Drought
Genetics
Irrigation (agriculture)
Metabolism
Stress, Physiological
Seed Plant
Season
Sorghum
Statistical Model
Statistics And Numerical Data
Sorghum Bicolor Bicolor
Sorghum Bicolor Bicolor
Water
Adaptation, Physiological
Agricultural Irrigation
Cluster Analysis
Droughts
Genotype
Models, Statistical
Seasons
Seeds
Sorghum
Stress, Physiological
Water
Data do documento: 2014
Revista: Genetics and Molecular Research
É parte de: Volume 13, Número 4, Pags. 9817-9827
Abstract: Twenty-five cultivars of grain sorghum [Sorghum bicolor (L.) Moench] were examined under both drought stress and normal conditions in 4 experiments. In each condition, genotypes were evaluated in a factorial experiment using a randomized complete block design with 3 replications. Eight drought tolerance indices including stability tolerance index, mean productivity (MP), geometric MP, harmonic mean, stress susceptibility index, tolerance index, yield index, and yield stability index were estimated for each genotype based on grain yield under drought (Ys) and irrigated conditions (Yp). The results indicated that there were positive and significant correlations among Yp and Ys with geometric MP, MP, harmonic mean, and stability tolerance index, indicating that these factors are better predictors of Yp and Ys than tolerance index, stress susceptibility index, yield stability index, and yield index. Based on adjusted means at Yp and Ys, indices geometric MP, MP, harmonic mean, and stability tolerance index, unweighted pair group method with arithmetic mean cluster and biplot analysis, the most tolerant cultivars were ‘9929020’, ‘9929034’, and ‘N 95B’. © FUNPEC-RP.
DOI: 10.4238/2014.November.27.9
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