Table 3.

Clean reads mapping to unigenes.

	CK (25°C)	1–2 d (−3 °C)	5–6 d (−3 °C)	9–10 (−3 °C)
Reads	18,830,230	13,801,100	27,140,932	18,863,168
Mapping	17,181,312	12,259,774	25,547,464	17,726,484
Unique	14,572,191	9,912,847	21,082,048	14,721,561
Mapping rate	91.24%	88.83%	94.13%	93.97%
Unique rate	77.39%	71.83%	77.68%	78.04%

Four libraries: control (CK = 25 °C) and different stages of cold stimulation (−3 °C for a duration of 1–2 d, 5–6 d, and 9–10 d).