Table 3 The methods of phenotype standardized for peach fruit quality traits

Fruit development period (FDP)

days from full bloom to fruit ripening (d)

Fruit weight (FW)

grams

Fruit diameter (FD)

the diameter across cheek area (mm)

Percentage of red skin color (PSC)

%

Red in flesh (RF)

0 = no red overlay; 1 = red overlay

Red around pit (RP)

0 = no red; 1 = red

Adherence to pit (AP)

1 = freestone; 2 = semi-freestone; 3 = clingstone

Eating quality (EQ)

1 = extremely poor; 2 = poor; 3 = fair; 4 = good; 5 = excellent

Fruit flavor (FV)

1 = sour; 2 = sour-sweet; 3 = water sweet; 4 = sweet; 5 = rich sweet

Fruit fiber content (FFC)

1 = few; 2 = intermediate; 3 = many

Soluble solid content (SSC)

%

Fruit acidity content (FA)

%