The primary root or radicle in plumeria seedlings is not considered a taproot. Taproots are typically found in dicotyledonous plants, where the primary root grows straight down into the soil, serving as the main root axis from which lateral roots branch out. Examples of plants with taproots include carrots, radishes, and dandelions.

Plumeria seedlings, on the other hand, do not develop a taproot system. Instead, they generally develop a fibrous root system consisting of numerous fine roots that spread out horizontally in the soil. This fibrous root system is well-suited to the plumeria’s growth habits and provides stability and efficient absorption of water and nutrients from the surrounding soil.

So, while the primary root or radicle is the first root to emerge from a germinating plumeria seed, it does not develop into a taproot system. Instead, it contributes to the development of the fibrous root system characteristic of plumeria plants.

For more information on plumeria root systems and their development, you can refer to resources such as PlumeriaCareGuide.com’s articles on root care and propagation techniques.