We discuss the solar wind electron temperatures T e as measured in the nascent solar wind by Parker Solar Probe during its first perihelion pass. The measurements have been obtained by fitting the high frequency part of Quasi-Thermal Noise spectra recorded on-board by the Radio Frequency Spectrometer (Pulupa et al. 2017). In addition we compare these measurements with those obtained by the electrostatic analyzer Halekas & al. (2019). These first electron observations show an anti-correlation between T e and the wind bulk speed V : this anti-correlation is most likely the remnant of the well-known mapping observed at 1 AU and beyond between the fast wind and its coronal hole sources, where electrons are observed to be cooler than in the quiet corona. We also revisit HELIOS electron temperature measurements and show, for the first time, that an in-situ (T e , V) anti-correlation is well observed at 0.3 AU but disappears as the wind expands, evolves and mixes with different electron temperature gradients for different wind speeds.