GENERAL CHARACTERISTICS OF CANISTEL (POUTERIA CAMPECHIANA) IN TRA VINH PROVINCE BASED ON MORPHOLOGICAL FEATURES

Abstract

Canistel is a high-value fruit tree whose flesh is rich in nutrients and flavor. However, the research has not been focused on the management and conservation of the genetic resources of this crop. Molecular markers have been used in many studies to assess the diversity of different crops. However, studies evaluating the genetic diversity of canistel plants are still limited. The study aimed to evaluate the genetic diversity of canistel samples with morphological characteristics and molecular markers (inter-simple sequence repeat marker and random amplified polymorphic DNA marker). The diversity of morphological characteristics, in terms of Shannon’s information index was 0.83, suggesting high genetic diversity of 30 canistel genotypes. Four inter-simple sequence repeat (ISSR) primers generated 25 polymorphic bands. Four RAPD primers revealed 55 random amplified polymorphic DNA (RAPD) fragments. Both ISSR and RAPD primers reached 100% polymorphism. The obtained results indicate the high genetic diversity between the individuals of Pouteria campechiana in Tra Vinh, Vietnam.