GRAIN LIPID COMPOSITION IN NON-TRANSGENIC SOYBEAN (Glycine Max L. Merril)

CONSTANZA CARRERA; MARÍA J. MARTÍNEZ; MÓNICA BALZARINI; JULIO DARDANELLI; DIEGO SOLDINI; FEDERICO PIATTI; MIGUEL GALVÁN; LUIS ERAZZU

Beijing

Conferencia; World Soybean Research Conference VIII; 2009

Institute of Crop Science, Chinese Academy of Agricultural Sciences

Transgenic commercial cultivars of high yield represent 99% of the Argentinean soybean sowing area; however, no transgenic lines are a good alternative to obtain food products of differentiated quality because their genetic base is broad. It has not been evaluated comprehensively native germplasm lines with regard to parameters that make their quality. The aim of this work was to evaluate oil, oleic, linoleic and linolenic concentrations of ten non-transgenic lines sown at multienvironmental field experiments, including four contrasting sites of the Argentinean soybean growing region, on two sowing dates at each location and with two replications. A transgenic cultivar widely used in the country was included in all trials. ANOVA was used to study cultivar, environment (defined as location and sowing date combinations) and interactions effects on the grain lipid composition of non-transgenic soybeans, and LSD test to evaluate differences in quality of the non transgenic lines and the commercial cultivar. Results suggested high genetic variability for the chemical variables analyzed in the non-transgenic lines and a similar behavior to the transgenic cultivar with respect to the environmental variation. Cultivar-by-environment interaction effect for fatty acids was higher than for oil concentration, indicating the opportunity to exploit narrow adaptations for these traits.