The effect of half-sib lines on morphological attributes of one-year old Fraxinus angustifolia seedlings

  • Ivona Kerkez University of Belgrade, Faculty of Forestry https://orcid.org/0000-0002-2070-158X
  • Marina Nonić University of Belgrade - Faculty of Forestry, Kneza Višeslava 1, 11030 Belgrade, Serbia
  • Jovana Devetaković University of Belgrade - Faculty of Forestry, Kneza Višeslava 1, 11030 Belgrade, Serbia
  • Mirjana Šijačić-Nikolić University of Belgrade - Faculty of Forestry, Kneza Višeslava 1, 11030 Belgrade, Serbia
  • Vladan Ivetić University of Belgrade - Faculty of Forestry, Kneza Višeslava 1, 11030 Belgrade, Serbia https://orcid.org/0000-0003-0587-1422

Abstract

Aiming to produce forest reproductive material at the family level, we tested quality of twenty Fraxinus angustifolia Vahl half-sib lines in the nursery experiment. We measured height (HT) and root collar diameter (DIA) of one-year old seedlings, and we monitored germination rate and mortality during the first growing season. Seeds of 20 half-sib lines originating from Sombor area (north Serbia) were sown in seedbed on autumn 2016. The seed dormancy was not broken in all seeds equally, resulting with un-uniform germination over a two months period. All measured attributes shows a statistically significant differences, indicating a strong effect of genetic control. The highest average and DIA were measured in half-sib line 7 (22.62 cm; 5.79 mm, respectively). The lowest average DIA was measured in half-sib lines 18 (2.85 mm) and 19 (2.94 mm), which can be result of growing density effect (104 seedlings m-2 for line 18 and 126 seedlings m-2 for line 19, compared to 40 seedlings m-2 for line 7). The correlation between DIA and HT is strong and positive (R=0.90). Due to its morphological superiority, half-sib line 7 could be recommended for mass production of Fraxinus angustifolia seedlings at the family level. Keywords: Height; Root Collar Diameter; Seedlings Quality; Narrow leaved ash

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Published
2018-07-10
Section
Articles

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