  We consider the effect of a massless gluino on the evolution of a parton
shower. The hadron multiplicity distribution is predicted to evolve as a
function of the collider energy in the same way as in the absence of gluinos,
except for a slower running of $\alpha_s$. A comparison of the predicted
average hadron multiplicity with experimental data is presented as a fit
constraining the values of the strong coupling constant at the $Z^0$ peak
$\alpha_s(m_Z)$ and the scale of the onset of hadronization $m_0$. It appears
that \lgl s are unlikely to be detected this way with less than 500 GeV of \cm\
energy.
