Investigation of growth characteristics of progenies in controled pollination of juglans regia L.

Persian walnut (Juglans regia L.), a native plant of central Asia, is one of the most important tree species in the world. Walnut has many economic values which covers fruits and wood production. Genetic improvement of walnut could help better production and use of its fruit and wood. This research was performed on Full-sib progenies in Chaharmahal and Bakhtiari province in order to investigate the effects of controled pollination on several growth characteristics. At the first step parental trees of the species were selected with different characteristics and controled pollination were performed. After fruit harvesting, several characteristics were recorded on the hybrid seeds and seedlings. GCA and SCA were estimated on Full-sib seedlings. Results showed that general combining ability of female number 12 for germination percentage and seedlings establishment, and male number 6 for seedlings height were higher than others. According to special combining ability, female number 11 and male number 1 for plant height and collar diameter and female number 12 and male number 6 for germination percentage were shown to be the best crossed female and male trees.