Mean daily temperature, mean daily maximum temperature, mean daily minimum temperature, mean diurnal temperature difference, total solar radiation and cumulative photo-thermal index during cotton fiber development period from flowering date to boll opening date on FP1 and FP3 of two cultivars durin

aMDT, mean daily temperature.
bMDTmax, mean daily maximum temperature.
cMDTmin, mean daily minimum temperature.
dMDTdif, mean diurnal temperature difference.
eMDSR, mean daily solar radiation.
fPTI, cumulative photo-thermal index during cotton fiber development period.
gWeather data were provided by Nanjing Weather Station, which was located nearby the experimental site.
hCV, coefficient of variation.