Nectarine tree named 'SMOOTH TEXAN ONE'

Disclosed is a new variety of Prunus persica named 'SMOOTH TEXAN ONE'. This new variety, which requires approximately 600 chilling units of dormancy, is considered to be a nectarine tree of early season maturity, ripening in mid- to late-May in the medium chill zone of Texas, which produces yellow fleshed fruit that are firm, attractively colored, and suitable for both local and regional markets.U