An enhancing effect attributed to a nonsynonymous mutation in SOYBEAN SEED SIZE 1, a SPINDLY‐like gene, is exploited in soybean domestication and improvement

What is it about?

We mapped a soybean seed regulator SOYBEAN SEED SIZE 1, encoding a SPINDLY homolog that resided in a well-identified QTL-rich region, and revealed that elite alleles of this gene, harbouring a nonsynonymous substitution from glutamic acid (E) to glutamine (Q) at position 182, which could increase seed weight, were selected during soybean domestication and improvement.

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