Inheritance and correlation of main phenological and pomological traits in Japanese plum (Prunus salicina Lindl.)

M. Nicolás-Almansa, J.A. Salazar, M. Rubio, A. Guevara, A. Carrillo, F. García, J. Cos, P. Martínez-Gómez, D. Ruiz
The inheritance of 15 important agronomic traits including main phenological (beginning of flowering (F5), full flowering time (F50), flowering intensity, ripening time) and pomological (productivity, fruit weight, fruit diameter, fruit shape, skin color, flesh color, fruit firmness, soluble solids content (SSC) and acidity) traits and theirs relationships were studied for two years in three segregating Japanese plum (Prunus salicina Lindl.) progenies: ‘Black Splendor’ × ‘Pioneer’; ‘Red Beauty’ × ‘Black Splendor’ and ‘Red Beauty’ × ‘Santa Rosa Precoz’ with 121, 103 and 103 seedlings, respectively. The progenies showed a wide range of variability in the traits studied and high segregation in the progenies, especially in the ‘Black Splendor’ × ‘Pioneer’ family. Skin and flesh color showed non-parametric distributions which indicates its oligogenic character, while the rest of traits tended to a normal distribution indicative of its polygenic nature and quantitative inheritance. In addition, the observed transgressive values, out of the parent range, of some descendants evidenced the influence of the genetic background in the evaluated progenies. Significant correlations between several traits were also identified. The knowledge of the transmission and correlation of these traits will be of great use to improve the efficiency of Japanese plum breeding programmes. These results are also of great interest providing suitable segregating progenies for QTL identification after their molecular characterization to develop efficient marker assisted selection strategies.
Nicolás-Almansa, M., Salazar, J.A., Rubio, M., Guevara, A., Carrillo, A., García, F., Cos, J., Martínez-Gómez, P. and Ruiz, D. (2021). Inheritance and correlation of main phenological and pomological traits in Japanese plum (Prunus salicina Lindl.). Acta Hortic. 1322, 61-68
DOI: 10.17660/ActaHortic.2021.1322.10
Japanese plum, Prunus, breeding, transmission, flowering, ripening, fruit quality

Acta Horticulturae