Painting "roses and lemon"

Table oil on canvas, bouquet of white roses and lemon composed on a very textured brown and blue background, new color range. Origin (argentinian?) to be determined. Dimensions 70.5 X 50.5 cm. The canvas is well stretched on its original chassis whose bill does not seem european, fine chassis and little-known textile hanger system. Signed a.wiki, dated 1988.