Fig. 3. The yearly soybean genotype by trait biplots of 1994–1999. The traits are spelled out in lowercase letters, and each genotype is represented by "c". DTM = days to maturity, HEIGHT = Plant height, KW = 100 seed weight, LODG = lodging scores, OIL = percentage of oil, PROTEIN = percentage of protein, YLD = seed yield, YOIL = oil yield per unit land area, and YPROT = protein yield per unit land area.

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