  We theoretically investigate transport in a spin incoherent one dimensional
electron system, which may be realized in quantum wires at low electron density
and finite temperature. Both the pure and disordered cases are considered, both
in finite wires and in the thermodynamic limit. The effect of Fermi liquid
leads attached to the finite length system is also addressed. In the infinite
system, we find a phase diagram identical to that obtained for a spinless
Luttinger Liquid, provided we make the identification $g=2g_c$, where $g$ is
the interaction parameter in a spinless Luttinger Liquid and $g_c$ is the
interaction parameter of the charge sector of a Luttinger Liquid theory for
electrons with spin. For a finite length wire attached to Fermi liquid leads
the transport depends on details of the disorder in the wire. A simple picture
for the cross-over from the spin incoherent regime to the spin coherent regime
as the temperature is varied is also discussed, as well as some physical
implications.

Mesoscale and Nanoscale Physics;Strongly Correlated Electrons