Ginkgo biloba sex chromosomes?

[Frederick J. Peabody]

I am interested in finding out if Ginkgo biloba has been investigated with
regard to the presence of sex chromosomes.  I am aware that other plant
species such as Melandrium album (Syn. Silene latifolia) and a few others
have been shown to have sex chromosomes.  I found no references to
Ginkgo chromosomes on my library's on-line search machine which indexes
2,500 periodicals from 1991 to the present.  Any references would be
greatly appreciated.

Frederick J. Peabody, Ph.D.
Associate Professor of Botany
University of South Dakota
414 East Clark Street
Vermillion, SD  57069  USA
fpeabody at sundance.usd.edu