scholarly journals Effects of Seed Handling, Pre-germination and Planting Positions on Tree Seedling Root and Stem Development

1986 ◽  
Vol 4 (3) ◽  
pp. 69-72
Author(s):  
B. L. Appleton ◽  
C. E. Whitcomb ◽  
S. W. Akers
Keyword(s):  
Adverse Effect ◽  
Subsequent Development ◽  
Root Systems ◽  
Research Use ◽  
Tree Seedling ◽  
Seedling Root ◽  
Landscape Plants ◽  
Stem Development ◽  
Seed Handling

Distortions of stem and root systems are sometimes noted with woody landscape plants propagated from seed. While position of the seed during stratification appears to produce no adverse effect, a change in seed orientation during pre-germination and/or transplanting can influence the subsequent development of these stem and root systems, frequently resulting in distorted seedlings unacceptable for commercial or research use.

scholarly journals Root architecture simulation improves the inference from seedling root phenotyping towards mature root systems

2017 ◽  
Vol 68 (5) ◽  
pp. 965-982 ◽  
Author(s):  
Jiangsan Zhao ◽  
Gernot Bodner ◽  
Boris Rewald ◽  
Daniel Leitner ◽  
Kerstin A. Nagel ◽  
...  
Keyword(s):  
Root Architecture ◽  
Root Systems ◽  
Seedling Root ◽  
Root Phenotyping ◽  
Architecture Simulation ◽  
Mature Root

A rapid method for detecting cold injury in conifer seedling root systems

1990 ◽  
Vol 20 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Gary A. Ritchie
Keyword(s):  
Weight Loss ◽  
Root Systems ◽  
Douglas Fir ◽  
Cold Injury ◽  
Percent Weight Loss ◽  
Seedling Root ◽  
Seedling Roots ◽  
Temperature Exposure ◽  
Low Temperature Exposure ◽  
Conifer Seedling

A method is described for rapidly determining the extent of cold injury to Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) seedling root systems. It is based upon pressure:volume theory but short-cuts the tedious pressure:volume method. Injured root systems were brought to full hydration, then weighed and placed into a pressure chamber. A pressure of 1.5 MPa was applied for a 5-min period, then the root system was removed from the chamber and reweighed. The percent weight loss was then calculated. Percent weight loss was closely related to degree of low temperature exposure in Douglas-fir seedling roots. Percent weight loss values were near 5 in uninjured controls, whereas freeze-injured seedlings had percent weight loss values of 7 or greater. Percent weight loss values measured on seedlings just before planting were closely correlated with seedling vigor and mortality 3 months following planting in both a field test and a greenhouse pot trial.

A microcomputer based method for the rapid and detailed measurement of seedling root systems

1982 ◽  
Vol 69 (2) ◽  
pp. 305-309 ◽  
Author(s):  
P. A. Costigan ◽  
J. A. Rose ◽  
T. McBurney
Keyword(s):  
Root Systems ◽  
Detailed Measurement ◽  
Seedling Root

scholarly journals A technological approach to the morphofunctional classification of seedlings of 50 Brazilian forest species

2014 ◽  
Vol 36 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Gabriela Alves Lobo ◽  
Denise Garcia de Santana ◽  
Antonieta Nassif Salomão ◽  
Luciana Salazar Rehbein ◽  
Angélica Polenz Wielewicki
Keyword(s):  
Primary Root ◽  
Root Systems ◽  
Forest Species ◽  
Seedling Root ◽  
Technological Approach ◽  
Shoot System ◽  
Normal Seedling ◽  
Long Life ◽  
Great Mass

A technological approach to the morphofunctional classification of forest species seedlings defines the essential structures in the evaluation of germination testing and identifies changes in this structures that suggest abnormalities. The objective was to associate morphofunctional seedling classification to seed germination testing using official germination methods for 50 forest species from Amazon, Caatinga, Cerrado, Atlantic Forest and Pantanal biomes. Morphofunctional classification and abnormalities were defined using seedlings from 232 germination pre-tests and 1,160 samples that were formed for each species using seeds from distinct locations and with at least three levels of vigor. The phanero-epigeal germination with a non-developed epicotyl predominated among species (84%). Common in hypogeal germination, the development of the epicotyl occurred only in seedlings of Anadenanthera colubrina and Erythrina speciosa, both with epigeal germination. The need to supply and sustain the great mass produced in its long life cycle, the presence of the primary root was considered essential for the normal seedling classification of these forest species. Curled, stunted, necrotic, bifurcated primary root and those retained in the seed coat or in the fruit structures, were the main abnormalities of the seedling root systems. Damages to the shoot system were uncommon.

Using Fractal Geometry to Quantify Loblolly Pine Seedling Root System Architecture

1993 ◽  
Vol 17 (3) ◽  
pp. 130-134 ◽  
Author(s):  
Kenneth E. Diebel ◽  
Peter P. Feret
Keyword(s):  
Fractal Dimension ◽  
Loblolly Pine ◽  
Fractal Geometry ◽  
Spatial Arrangement ◽  
Root System Architecture ◽  
Tree Seedling ◽  
Simple Method ◽  
Seedling Root ◽  
Seedling Roots ◽  
Virginia Department

Abstract Fractal geometry is a simple method of quantifying and describing complex shapes often found in nature (Mandelbrot 1983). The spatial arrangement of pine seedling roots is complex and not easily quantified. In this paper we report on a method for quantifying seedling roots based on concepts of fractal geometry. Ten 1+0 bareroot seedlings of each of three grades of loblolly pine (Pinus taeda L.) were obtained from two Virginia Department of Forestry nurseries. The fractal dimension (D) was estimated for seedling roots using a computer-based box-count method. The results show that pine seedling roots have a fractal dimension, and the fractal dimension is highly correlated with root morphological traits. We propose that fractal geometry may be a new and efficient method to describe tree seedling root morphology. South. J. Appl. For. 17(3):130-134.

scholarly journals Photographic Technique for Grass Seedling Root Systems

1988 ◽  
Vol 80 (3) ◽  
pp. 548-549
Author(s):  
P. R. Newman ◽  
L. E. Moser
Keyword(s):  
Root Systems ◽  
Photographic Technique ◽  
Seedling Root

scholarly journals Vegetable Seedling Root Systems: Morphology, Development, and Importance

HortScience ◽  
1995 ◽  
Vol 30 (6) ◽  
pp. 1153-1159 ◽  
Author(s):  
Daniel I. Leskovar ◽  
Peter J. Stoffella
Keyword(s):  
Root Systems ◽  
Seedling Root ◽  
Morphology Development
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