Related Characteristics and Multivariate Analyses in the Evaluation of White Oat Aluminum Tolerance

• Published in: Communications in Soil Science and Plant Analysis Vol. 42; no. 1-4; pp. 247 - 262
• Main Authors: Crestani, Maraisa, Silva, Jose Antonio Gonzalez da, Bervald, Clauber Mateus Priebe, Maia, Luciano Carlos da, Oliveira, Antonio Costa de, Carvalho, Fernando Iraja Felix de
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.01.2011; Taylor & Francis; Taylor & Francis Ltd
• Subjects: Agronomy. Soil science and plant productions; aluminum; aluminum chloride; aluminum sulfate; Aluminum toxicity; Avena sativa L; Biological and medical sciences; correlation; Fundamental and applied biological sciences. Psychology; genotype; joint analysis; multivariate analysis; oats; root length; Avena sativa; Monocotyledones; Oat; Root; Toxicity; Tolerance; Aluminium; Multivariate analysis; Cereal crop; Avena sativa L; Aluminum toxicity; correlation; Gramineae; Angiospermae; Spermatophyta; root length; joint analysis
• ISSN: 0010-3624; 1532-2416; 1532-4133
• DOI: 10.1080/00103624.2011.539083

Standard white oat genotypes were subjected to different methods and aluminum (Al) levels under hydroponic conditions to verify the relationship between plantlet characteristics and their Al tolerance using multivariate analyses. A completely randomized design with three replications was used, adopting three evaluation protocols: “complete nutrient solution” with 0, 8, 16, and 32 mg L-1 of Al supplied as aluminum sulfate [Al2(SO4)3·18H2O]; “complete nutrient solution” with 0, 8, 16 and 32 mg L-1 of Al supplied as aluminum chloride (Al2Cl3•6H2O); and the “minimum nutrient solution” with 0, 1, 3, and 5 mg L-1 of Al supplied as Al2Cl3•6H2O. The performance of white oat plantlet genotypes subjected to excess Al in hydroponic conditions is greatly associated with root length, where the nutrient solution composition and the Al sources interfere in these associations. The study based on the joint analysis of characteristics at plantlet level does not allow an efficient discrimination of Al-tolerant and Al-sensitive white oat genotypes.