The study looked at how different types of sugars in plum fruits are affected by the weather. They tested six different types of plums and found that the amount of sugars varied depending on the climate and the type of plum. Sucrose was the most common sugar found, while glucose was highest in two of the plum types. The researchers used a method called high performance liquid chromatography to measure the sugar levels. They discovered that the sugar levels in plums can be influenced by the weather conditions, which can affect the quality of the fruit.