Influence of locations and planting dates on protein composition of soybean lines with modified beta-conglycinin and glycinin concentration.

摘要

Soybean [Glycine max (L.) Merr.] cultivars with increased beta -conglycinin (BC) and reduced glycinin (Gly) may have both food production and human health benefits. The stability of BC and Gly concentrations over different environmental conditions will be an important factor in the production of these cultivars. The objective of this study was to evaluate the effect of locations and planting dates on the protein composition of soybean genotypes with varied combinations of Gy and gy alleles for reduced Gly and increased BC concentration. Six soybean lines with different gy allele combinations and one common cultivar with only wild-type Gy alleles were grown at four locations with three planting dates at each location in 2008. There were no significant differences among planting dates for the mean concentration of BC, Gly, or their subunits. The means of locations were significantly different for all of the protein components, except for the A124 subunit of Gly. The genotype with four gy alleles produced 0 g kg-1 of Gly across locations and planting dates, but only three of the mutant gy alleles were required to maximize BC concentration. Grain produced at different locations likely would differ in BC and Gly concentration, but planting dates at a location would not be expected to significantly affect the protein components.Digital Object Identifier http://dx.doi.org/10.2135/cropsci2009.09.0478