The good seed stands for a group of plants that have the same or similar features that exist in itself as attributes or environment, species have a great style must be objective. The style of high-yield varieties, such as disease resistance to insects. In response to the use of fertilizers. Adaptation to the environment have been well shorter harvest age fast maturation of drought-resistant water resistant shell thickness is present. Long stem growth results in good taste. A high percentage of oil A high percentage of protein, etc. For example, mango varieties including water 4 genetic line that its purpose is the outstanding result of very small seed-grown sweet, high output, easy to grow, the General result of infection is the best thang yellow varieties, including 60 species of Chiang Mai is a good species to produce up to 300 kg/Rai steel rust fungi, disease resistance. There is a high percentage of oil protein percentage. Seed-grown strong stems are not broken fall. Pod is not broken.