Genotypic and Environmental Variation in Seed Nutraceutical and Industrial Composition of Non-transgenic Soybeans

CONSTANZA CARRERA; JULIO DARDANELLI; DIEGO SOLDINI

CROP & PASTURE SCIENCE

CSIRO PUBLISHING

Lugar: Collingwood; Año: 2014 vol. 65 p. 1311 - 1322

1836-5795

Genotype by environment interactions induce differential response of genotypes to variable environmental conditions in soybean seed composition which may hinder breeding progress. The objectives of this study were to estimate the contribution of genotype (G), environment (E) and genotype by environment interactions (G×E) to seed chemical composition variability as well as to identify the most stable non-transgenic genotypes for several chemical components. Seeds from six non-transgenic soybean genotypes that were grown in 23 environments from Argentina (24 to 38º S latitude) were analyzed. Although E was the most important source affecting variation for the majority of the analyzed chemical components, G and G×E also had a significant effect (P ˂ 0.001). The stable genotypes with superior performance across a wide range of environments were ALIM3.20 for protein (Pr), linolenic acid (Ln), Ln to linoleic acid ratio (Ln/La), delta tocopherol (DT) and total isoflavones (TI); ALIM4.13 for Pr, oleic acid (Ol), alpha tocopherol (AT) and DT; ALIM3.14 for Ln, AT and TI; Ac0124-1 for Ln and Ln/La; and Ac0730-3 for AT. Non-transgenic genotypes with stable chemical profile across environments would allow broad-sense inference, performing well under a wide range of environmental conditions for any chemical compound. This study contributes knowledge to breeders to use these genotypes to broad the genetic backgrounds of currently available commercial cultivars, or design production strategies, using them directly as raw material.