Flavr Savr tomatoes were the first genetically engineered tomatoes introduced in the market. This means that Option 1 is correct. Option 2 is also correct because these tomatoes have a slower ripening process compared to regular tomatoes. However, Option 3 is not correct. The fruit of Flavr Savr tomatoes can be left on the plant for a longer period without spoiling, as compared to regular tomatoes.

Option 4 is correct as well. Flavr Savr tomatoes were genetically modified to have increased yield and better flavor. By disabling a gene that controls the ripening process, the tomatoes could stay on the vine longer to develop a better taste and more yield.

In conclusion, Option 3 is the not correct statement about Flavr Savr tomatoes. The fruit of these tomatoes can be left on the plant for a longer period without spoiling, making it different from regular tomatoes.