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Population relationships and structures of ducks
A: Population nucleotide diversity. B: Principal component analysis. C: ML tree constructed based on autosomal data. MA: Mallard; CSB: Chinese spot-billed; PK: Pekin; CV: Cherry valley; MP: Maple leaf; GY: Gaoyou; JD: Jinding; SM: Shanma; SX: Shaoxing. Egg and dual-purpose type ducks (EDT), including shanma, shaoxing, jinding, and gaoyou; meat-type ducks (MET), including pekin, cherry valley, and maple leaf.
