Tocopherols Concentration and Stability in Early Maturing Soybean Genotypes
| Autor: | Denis Pageau, Gilles Tremblay, Pierre Turcotte, Wucheng Liu, Philippe Seguin |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Chemistry Vitamin E medicine.medical_treatment food and beverages 04 agricultural and veterinary sciences 040401 food science 01 natural sciences Terpenoid chemistry.chemical_compound 0404 agricultural biotechnology Animal science Agronomy Genetic variation Botany Genotype medicine lipids (amino acids peptides and proteins) heterocyclic compounds Tocopherol Cultivar Gene–environment interaction alpha-Tocopherol Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Agronomy Journal. 101:1153-1159 |
| ISSN: | 1435-0645 0002-1962 |
| Popis: | Soybean (Glycine max (L.) Merr.) is an important source of tocopherols which have health-benefi cial properties. A study was conducted to determine tocopherols concentration and stability in early maturing soybean genotypes and to determine their relationships to other important seed characteristics. Twenty soybean genotypes were grown in replicated trials in six environ- ments of eastern Canada, and their total-, α-, γ-, and δ-tocopherol concentrations were determined by high-performance liquid chromatography. Seed yield, 100-seed weight, and crude protein and oil concentrations were concurrently determined. Geno- type and environment main eff ects and G × E interactions were observed for all tocopherols. Variations in the ranking of geno- types were, however, limited. Across environments and genotypes, relative proportions of α-, δ-, and γ-tocopherol were 6, 34, and 60%, respectively. Variation in α-tocopherol among genotypes was signifi cant, with concentrations ranging between 8.7 and 33.2 μg g -1 across environments. Diff erences between environments were signifi cant, albeit minimal, for all tocopherols; there was a 42% average variation in α-tocopherol concentration across environments. Stability of genotypes for α-tocopherol was not linked to mean concentration; however, some genotypes with high stability and mean concentration were identifi ed, including the cultivar Heron. No correlations were observed between α-tocopherol and any of the other seed characteristics investigated. However, negative correlations were observed between the other tocopherols and seed yield, 100-seed weight, and crude protein. Tocopherols were positively correlated with each other, except for a negative correlation between α- and δ-tocopherol. Th e large variation observed among genotypes for α-tocopherol, the relatively high stability of genotypes performance across environ- ments, and the lack of negative correlation with other important seed characteristics suggest that selection for high α-tocopherol could be possible. |
| Databáze: | OpenAIRE |
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