NEW YORK - Although it has been nearly 50 years since the first woman graduated with a wine degree from a top US university, less then 10 percent of women are chief winemakers at US wineries.

MaryAnn Graf became the first woman to graduate from the viticulture and enology department at the University of California Davis in 1965 and since the mid-1990s women have made up nearly half of the students in that specialty at the university.

But researchers Lucia Albino Gilbert and L. Suzanne Dancer at Santa Clara University in California have found that despite educational advancements, women are still battling a glass ceiling in the wine industry.