Evaluation of plant growth on progeny test ebony (Diospyros rumphii) age one year in the nursery

Abstract

Kinho J, Halawane J, Irawan A, Kafiar Y. 2015. Evaluation of plant growth on progeny test ebony (Diospyros rumphii) age one year in the nursery. Pros Sem Nas Masy Biodiv Indon 1: 800-804. Diospyros rumphii Bakh. is one species of commercial timber where known as ebony. This species has a high economic value, thus the main attraction to the local people and industry to be exploited. This species has characterized on slow growing thus it is the limiting factors. Nowadays, this species decreases in nature and fear of extinction. This condition was caused by massive exploitation in the past. One effort to maintain the existence of these species is the conservation of genetic resources. This study aimed to determine the genetic variation of growth and assess the value of plant genetic parameters of ebony age one year in the nursery. The method of this research was a Randomized Complete Block Design by using 22 families, four tree plots, and 12 blocks. The results showed that family or the source of mother tree have a significant effect on height and diameter growth, which suggested that they had genetic variations in height and diameter growth of the test plants on progeny test of ebony age one year in the nursery. The estimation of individual heritability values for the parameters on height and diameter were 0.59 and 0.65. Meanwhile, the values of heritability family on parameters high and diameter were 0.97 and 0.89. The genetic correlation between height and diameter parameter was 0.89, while the phenotype correlation was 0.50. Based on the breeding value, there were six best families that were stable in height and diameter growth performance, namely families 15, 14, 11, 12, 13 and 22.