query: When was the red delicious apple introduced?
passage: Red Delicious
The Red Delicious is a clone of apple cultigen, now comprising more than 50 cultivars, first recognized in Madison County, Iowa, in 1880. According to the US Apple Association website, it is one of the fifteen most popular apple cultivars in the United States.[1]
passage: Dougherty (apple)
'Red Dougherty' was discovered around 1930 in Twyford, New Zealand and soon got very popular because of its attractive colour. It has a good resistance to many diseases and ripens at late season. Fruit is small to medium-sized, slightly ribbed, coloured dull red with some russeting. Flesh is firm and fine textured, greenish white, spicy and very sweet.