  In the last few years, galaxies at redshifts up to z~1 have become accessible
for medium-resolved spectroscopy thanks to the new generation of 10m-class
telescopes. With kinematic and photometric information on spiral galaxies in
this regime, well-known scaling relations like the Tully-Fisher relation (TFR)
can be studied over half a Hubble time. By comparison to local samples, these
studies facilitate simultaneous tests of the hierarchical merging scenario and
stellar population models. Using the Very Large Telescope, we obtained
spatially resolved rotation curves of 78 spiral galaxies in the FORS Deep Field
(FDF), covering all Hubble types from Sa to Sm/Irr at redshifts 0.1<z<1.0. We
find evidence for a B-band luminosity increase of up to 2mag for low-mass
spirals, whereas the most massive galaxies are of the same luminosity as their
local counterparts. In effect, the TFR slope decreases significantly. This
would explain the discrepant results of previous observational studies. We also
present the velocity-size relation and compare it to the predictions of
numerical simulations based on the hierarchical merging scenario.
