[5] Also, in the early 21st century, DNA analysis has suggested that there may be a close genetic relationship between Trebbiano and the Emilia-Romagna wine grape Alionza.

[6] During a series of trials between 1924 and 1930, Trebbiano was crossed with Gewürztraminer to create the pink-skinned Italian wine grape variety Manzoni rosa.

'Ugni blanc' is the most widely planted white grape of France, being found particularly along the Provençal coast, in the Gironde and Charente.

Italian immigrants brought Trebbiano to California, but is seldom seen as a single variety table wine.

The vine is vigorous and high-yielding, with long cylindrical bunches of tough-skinned berries that yield acidic yellow juice.

Trebbiano shares at least three synonyms with the Spanish wine grape Viura including Queue de Renard, Rossan, Ugni blanc and the similarly spelled Gredelín/Gredelin.