Morphometric Criteria for Assessing the Containerized Conifers Seedlings Quality
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2023, Vol 5, Issue 5
Abstract
The quality of planted forest crops depends significantly on the qualities of the planting stock. Numerous studies have been carried out to find clear seedling quality criteria and work out methods for their quantitative assessment to optimize the cultivation regime. Indicators of planting stock that are available for measurement under nursery conditions are needed to predict the success of forest crop establishment. This paper provides a review of the studies that applied different morphological criteria to evaluate coniferous planting stock quality and different determination methods. The suitability of planting stock quality indicators is determined by the effectiveness of predicting the outplanting survival rate (%) and growth. The key morphometric attributes of planting stock are the linear dimensions and biomass of whole seedlings and their individual organs: root collar diameter (RCD), seedling height (SH), dry mass of needles (NDM), stem (SBDM), roots (RDM), shoot/aboveground part of the seedling (SDM), seedlingâs total dry matter (TDM), number of needles (NN). Effective indicators of seedling quality are morphometric indicators of roots: total length (TRL), volume (TRV), dry mass (RDM), number of first- (FOLR N), second- (SOLR N), and third-order (TOLR N) lateral roots, root surface area (TRS). TRL is a fairly reliable indicator of absorbent surface area. To minimize errors in the use of one or two traits, integrated seedling quality indices based on two or more indices have been developed. Widely used indices include: SQ = SH(cm)/RCD(mm); SDM/RDM ratio; Dickson quality index DQI = TDM/ ((SH / RCD) + (SDM / RDM)). RCD was the most suitable parameter to indicate seedling quality for many species due to its higher correlation level with the Dickson quality index. The SH index proved to be an effective indicator for analysis only when used together with RCD. When studying the formation of frost resistance, a number of morphological parameters are used: initiation of needle primordia, size of primordial shoots, cell volume, mitotic index (MI) of terminal primordia. Despite advances in testing planting stock quality and predicting field performance, not a single test is universally applicable for all woody plant species and environmental conditions. According to the target seedling concept, the application of morphometric criteria for assessing seedling quality in forest nurseries is a prerequisite for predicting outplanting success and maximizing the predictability of the outcomes of highproductivity forest crop planting. Acknowledgements: The study was funded by the Russian Science Foundation grant No. 23-26-00192, https://rscf.ru/project/23-26-00192/. For citation: Robonen E.V., Chernobrovkina N.P., Egorova A.V., Zaitseva M.I., Nelaeva K.G. Morphometric Criteria for Assessing the Containerized Conifers Seedlings Quality. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 5, pp. 42â57. (In Russ.). https://doi.org/10.37482/0536-1036-2023-5-42-57
Authors and Affiliations
Elena V. Robonen,Nadezhda P. Chernobrovkina,Anastasiya V. Egorova,Maria I. Zaitseva,Karina G. Nelaeva,
Keywords
Related Articles
- EP ID EP723407
- DOI 10.37482/0536-1036-2023-5-42-57
- Views 23
- Downloads 0
Introduction of European Larch Climatypes in the Mixed Forest Zone
The range of European larch (Larix decidua Mill.) covers Central Europe, while in Podmoskovie this species grows out of its natural distribution area. In plantings this species is known for its fast growth, stability, go...
Changes in the Morphological Characteristics of Secondary Fiber Obtained from Wet-Strength Paper During Gentle Refining of the Recycled Pulp. Part 2. Fines Characteristics
The process of recycled pulp refining is usually associated with a significant change in the morphological characteristics of the secondary fiber and the formation of additional amounts of fines. It is well known that fi...
Application of Ash-Polymer Mixtures in the Construction of Forest Roads
The construction of forest roads is one of the priority issues of the forest industry. The underdeveloped forest road network does not allow the use of forest resources, which are situated too far from the civil roads be...
Growth of Vegetative Organs of Picea abies (L.) Karst. in Anthropogenic Environment
The studies were carried out in stands of various degree of devastation: in the city, suburban forests and forests of the green zone. Recreational loads strongly affect the sanitary condition of spruce forests. The numbe...
Stiffness Analysis of Connections of LVL Structures with Claw Washers
The use of claw washers in dowel connections allows to increase the bearing capacity and stiffness of joints. However, joint action of claw washers and dowels in the structures of advanced materials is studied insufficie...