Author(s):
1. Mirjana Šijačić-Nikolić, Šumarski fakultet Beograd, Serbia
2. Ivana Radaković, University of Belgrade-Faculty of Forestry, , Serbia
3. Marina Nonić, Šumarski fakultet Beograd, Serbia

Abstract:
VARIABILITY OF MORPHOLOGICAL CHARACTERISTICS OF TWO-YEAR-OLD EUROPEAN WHITE ELM (Ulmus laevis Pall.) SEEDLINGS DERIVED FROM DIFFERENT HALF-SIB LINES Mirjana Šijačić-Nikolić, Ivana Radaković, Marina Nonić* University of Belgrade - Faculty of Forestry Kneza Višeslava 1, Belgrade - Serbia * corresponding author: marina.nonic@sfb.bg.ac.rs In the area of Great War Island (Belgrade), European white elm (Ulmus laevis Pall.) belongs to the group of rare and endangered species, whose natural populations is reduced to a relatively small number of trees that can occur individually or in the small groups. Assessment of gene-ecological potential of this species presents a continuous activity and this research is one part of those activities. The aim of this paper was to assess the variability of morphological characteristics of two-year-old European white elm seedlings derived from different half-sib lines. The research was conducted at the level of 16 half-sib lines in progeny test established in the nursery of Faculty of Forestry in Belgrade. Seeds for establishing the progeny test were collected from maternal trees at the Great War Island. Analysis of variability of two-year-old seedlings was carried out at the level of morphological characteristics of leaves and morphological characteristics of seedlings. In a sample of 10 plants of each line, following morphological characteristics of leaves were measured: leaf width, leaf length, the length of asymmetry, petiole length, leaf serration and number of leaf veins (at the left and right side from midrib). In a sample of 30 plants from each half-sib line, seedling height and root collar diameter were measured. The descriptive statistics, one-way analysis of variance, LSD test and cluster analysis were done. The largest leaves were measured at the seedlings of half-sib line number 13, and the smallest at the seedlings of half-sib line number 63. According to the morphological characteristics of two-year-old seedlings, it can be stated that the highest average values of height and root collar diameter were recorded in the seedlings of half-sib lines number 13 and 32, while the smallest were recorded in the seedlings of line number 63. Based on the obtained results, it can be stated the satisfactory degree of variability between the analyzed half-sib lines that presents a good starting point for the conservation and sustainable use of the available gene pool.

Key words:
Ulmus laevis Pall., progeny test, two-year-old seedlings, variability

Thematic field:
Forest genetics, Forest seed science and nursery, afforestation

Date of abstract submission:
26.06.2017.

Conference:
Šumarska nauka u funkciji održivog razvoja šumarstva
25 godina šumarstva Republike Srpske