A comparison of root architecture and shoot morphology between naturally regenerated and container-grown seedlings of Quercus ilex

Abstract

We explored the different mechanisms developed by naturally regenerated seedlings of Quercus ilex L. (Holm oak) under Mediterranean conditions compared to container-seedlings commonly used in plantations. We examined the differences in root architecture (including topology and morphology) and shoot parameters. The results showed that there are many differences in the architecture of the root system as well as in the shoot morphology between the two types of seedlings. The naturally regenerated seedlings were smaller with regard to most of the shoot and root parameters, but they developed a longer taproot, only first order lateral roots, and presented a more herringbone-like root system compared to the container seedlings. Conversely, all types of container seedlings, were larger and had a more extended root system with many orders of lateral roots, while their taproot length was restricted within the container's depth. The quotient log (α)/ log (μ) for all seedlings, showed a tendency to decrease with plant size. A strict herringbone root system with an elongated taproot may be the optimal root architecture for Quercus ilex L. seedlings in order to survive under Mediterranean conditions.

Root architecture adaptation of Pistacia atlantica subsp. atlantica according to an increasing climatic and edaphic gradient: case of a north–south transect in Algeria

“…the distribution of these resources in space and time, the plasticity of root architecture plays a decisive role in successful resource acquisition (Spanos et al, 2008;Tsakaldimi et al, 2009). Through this work, which is original to the best of our knowledge, we aimed to approach the different root architectures established by this species along a gradient of increasing climatic and edaphic aridity.…”

Effectiveness of Diesel as a Mammal Repellent for Direct Seeding of Acorns

“…During initial growth, oaks develop a deep tap root that grants access to ground water. Growth in containers entangles this root or requires its pruning prior to transportation to the field, which yields suboptimal root architectures [6,7]. In this way, planted seedlings face their first summer without proper access to water and soil nutrients and have a low probability of survival [7].…”

“…Growth in containers entangles this root or requires its pruning prior to transportation to the field, which yields suboptimal root architectures [6,7]. In this way, planted seedlings face their first summer without proper access to water and soil nutrients and have a low probability of survival [7]. The negative effects of root deformation in those trees that do survive can prevail until adulthood [6].…”

Growth of Scots Pine and Silver Birch Seedlings on Different Nursery Container Media

“…Thus, field establishment may be improved through nursery treatments that ensure high quality seedlings and promote the development of a well structured root system (Tsakaldimi et al, 2009). Determination of the morphological and physiological attributes of seedlings that can be quantitatively correlated with improved field performance of planted seedlings and thus, can be successfully used for predicting the early plantation success, should be of high priority in forest practice (Duryea, 1985;Mattsson, 1997;Wilson and Jacobs, 2006;Aytas and Tilki, 2007;Tsakaldimi et al, 2013).…”