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Selection for soyabeans with high and environmentally stable lutein concentrations

  • Krishna Hari Dhakal (a1), Myoung-Gun Choung (a2), Young-Sun Hwang (a2), Felix B. Fritschi (a3), J. Grover Shannon (a4) and Jeong-Dong Lee (a1)...

Abstract

Lutein has significant nutritional benefits for human health. Therefore, enhancing soybean lutein concentrations is an important breeding objective. However, selection for soybeans with high and environmentally stable lutein concentrations has been limited. The objectives of this study were to select soybeans with high seed lutein concentrations and to determine the stability of lutein concentrations across environments. A total of 314 genotypes were screened and 18 genotypes with high lutein concentrations and five genotypes with low lutein concentrations were selected for further examination. These 23 genotypes and two check varieties were evaluated under six environments (two planting dates for 2 years at one location and two planting dates for 1 year at another location). Lutein concentrations were influenced by genotype, environment and genotype × environment interactions. Genotypes with late maturity and low lutein concentrations were more stable than those with early maturity and high concentrations. Early (May) planting resulted in greater lutein concentrations than late (June) planting. Among the genotypes evaluated, PI603423B (7.7 μg/g) and PI89772 (5.8 μg/g) had the greatest mean lutein concentrations and exhibited medium and high stability across the six environments, respectively. Thus, these genotypes may be useful for breeding soybeans with high and stable seed lutein concentrations.

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Corresponding author

* Corresponding author. E-mail: jdlee@knu.ac.kr

References

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Supplementary materials

Dhakal Supplementary Material
Tables S1-S2

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Supplementary materials

Dhakal Supplementary Material
Tables 1-2

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Selection for soyabeans with high and environmentally stable lutein concentrations

  • Krishna Hari Dhakal (a1), Myoung-Gun Choung (a2), Young-Sun Hwang (a2), Felix B. Fritschi (a3), J. Grover Shannon (a4) and Jeong-Dong Lee (a1)...

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