Abstract
The leaf area of plant leave scan be considered as an indicator of the plant growth conditions, and its variability is usually associated with adaptation and response to the changing environment. The aim of this study is to investigate the relation of the leaf area parameters on growth of the narrow-leaved ash 1+0 seedlings from the nursery trial and determining variability between the 18 half-sib lines. The seedlings were obtained from seeds collected from 18 maternal trees found in the area of the special nature reserve Upper Danube Region. Ten randomly selected 1+0 seedlings per half-sib line were selected for further study, and all leaves per seedling were collected, herbarized and scanned. The leaf area of each leaf (LACL) was measured using an open-source image processing program – ImageJ, and the total leaf area per seedling (TLA) was calculated. Also, the number of leaves per plant (NCL) as well as the number of leaflets within each imparipinnate compound leaf (NLCL) were counted. The results showed that differences between studied attributes were statistically significant among 18 selected half-sib lines (p < 0.05). The most variable parameter was the total leaf area per seedling (TLA; CV=68.98%), which is strongly correlated to the leaf area per each leaf (LACL; r=0.95) and the number of leaflets (NLCL; r=0.94). In this study, we confirmed that leaf parameters were highly correlated to the growth of one-year-old Fraxinus angustifolia seedlings.
Highlights
The leaf area of plant leave scan be considered as an indicator of the plant growth conditions, and its variability is usually associated with adaptation and response to the changing environment
Nursery influence can be great on the leaf morphology, so some studies show the greater influence of water regime on the leaf traits than the origin (Black-Samuelsson et al 2003)
This paper aims to study the relation of leaf area parameters to the growth of one-year-old narrow-leaved ash seedlings in the nursery trial and determining variability among the 18 half-sib lines
Summary
The leaf area of plant leave scan be considered as an indicator of the plant growth conditions, and its variability is usually associated with adaptation and response to the changing environment. The aim of this study is to investigate the relation of the leaf area parameters on growth of the narrow-leaved ash 1+0 seedlings from the nursery trial and determining variability between the 18 half-sib lines. Seedlings of narrow-leaved ash, as a hygrophytic tree species, do not tolerate dry conditions and no watering (Drvodelić et al 2016), which indicates the high vulnerability of this species in the context of climate change. Climate change extremes, such as extreme temperatures and long dry periods, uneven distribution of precipitation directly affect the dynamics of groundwater levels and the dynamics of precipitation and floodwater. Production and planting of the best quality narrow-leaved ash seedlings are crucial for regeneration since this species lack natural regeneration on the floodplains (Andrić 2018)
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