Reference Report for SoyBase12021147
| Title: | Genotype x Environment Interactions, Stability, and Agronomic Performance of Soybean with Altered Fatty Acid Profiles |
| Authors: | Primomo, V.S., Falk, D.E., Ablett, G.R., Tanner, J.W., Rajcan, I. |
| Source: | Crop Sci. 2002, 42(1):37-44 |
| Abstract: | There has been a major effort to produce soybean lines with modified fatty acid profiles in order to improve quality and develop new uses for soybean oil. Utilization of these lines depends on their agronomic traits and stability of their fatty acid profiles in diverse environments. The influence of yr of cultivation and location on the fatty acid composition of soybean oils from different genotypes was assessed along with differences in stability between fatty acids and fatty acid profiles and variations in agronomic and seed quality traits of 14 mutant soybean lines in comparison to 3 established soybean cv. (Century, Elgin 87 and OAC Shire). Genotypes were evaluated over 3 yr (1996, 1997 and 1998) at 4 locations in S. Ontario, Canada. Yr effects had the largest impact on all fatty acid levels. Location effects were significant only for oleic and linolenic acids. Genotype √ó yr interaction effect was significant for all fatty acids whereas genotype √ó location and genotype √ó yr √ó location interaction effects were significant only for oleic, linoleic, and linolenic acids. Mutants with reduced or elevated palmitic, elevated oleic, or reduced linolenic acid concn. exhibited average or higher stability than lines with normal levels of these fatty acids. Therefore, these lines may be suitable for growing in a wide range of environments. Maturity, plant height, lodging, seed size and seed quality were significantly different between mutants and cultivars. Seed yield was significantly reduced in mutants compared to cultivars. |
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