scholarly journals Recruiting Conventional Tree Architecture Models into State-of-the-Art LiDAR Mapping for Investigating Tree Growth Habits in Structure

2018 ◽  
Vol 9 ◽  
Author(s):  
Yi Lin ◽  
Miao Jiang ◽  
Petri Pellikka ◽  
Janne Heiskanen
Keyword(s):  
Tree Growth ◽  
State Of The Art ◽  
Tree Architecture ◽  
Growth Habits

TREE GROWTH HABITS IN RADIATION-INDUCED MUTANTS OF McINTOSH APPLE

1969 ◽  
Vol 49 (4) ◽  
pp. 483-487 ◽  
Author(s):  
K. O. Lapins
Keyword(s):  
Tree Growth ◽  
Growth Type ◽  
Irradiation Treatment ◽  
Induced Mutants ◽  
Radiation Induced ◽  
Growth Habits ◽  
Old Trees ◽  
Tree Type

Four-year-old trees of 20 radiation-induced mutants of the McIntosh cultivar were compared for tree vigor and growth type. Wide variation in tree vigor was found among clones. In tree type, various degrees of compactness were recorded. Tree vigor and compactness of growth showed all possible combinations among the various clones, an indication that each character was affected independently by irradiation treatment.

scholarly journals MODEL ARSITEKTUR POHON ARBORETUM UNIVERSITAS LANCANG KUNING SEBAGAI PENUNJANG PEMBELAJARAN

2018 ◽  
Vol 13 (1) ◽  
pp. 39-54
Author(s):  
Hadinoto Hadinoto ◽  
Eni Suhesti
Keyword(s):  
Direct Observation ◽  
Tree Growth ◽  
Plant Architecture ◽  
Descriptive Analysis ◽  
Tree Architecture ◽  
Growth Series ◽  
Architecture Model ◽  
Research Facilities ◽  
Morphological Representation ◽  
Branching Architecture

Arboretum is an example of forest which is a collection of trees which is a form of conservation of human-made germplasm. Arboretum with various vegetation containing scientific values ​​can be used as an open laboratory for student education and research facilities. The pattern of branching plants will form a form of plant architecture. The branching architecture is a morphological representation of a particular phase of a series of tree growth series, real and observable at all times. This research was conducted by conducting a survey (survey) and direct observation of the model of bamboo branching architecture in plants located in the research location. Identification of tree architecture model using book by F. Halle & R.A.A.Oldeman, namely: An Essay On The Architecture and Dynamics of Growth of Tropical Trees. Each tree is observed and photographed, as research documentation. Analysis conducted in this research is descriptive analysis to the type and shape of architectural architecture of Arboretum University of Lancang Kuning. Based on the results of research that has been done, can be drawn conclusion as follows: obtained 10 shapes / models of tree architecture of 41 species of trees (diamater ≥ 20 cm).

scholarly journals Genetic Interactions of Pillar (Columnar), Compact, and Dwarf Peach Tree Genotypes

2002 ◽  
Vol 127 (2) ◽  
pp. 254-261 ◽  
Author(s):  
Ralph Scorza ◽  
Daniele Bassi ◽  
Alessandro Liverani
Keyword(s):  
Genetic Control ◽  
Tree Growth ◽  
Genetic Study ◽  
Prunus Persica ◽  
Growth Habit ◽  
Production Systems ◽  
Visual Observation ◽  
Genetic Interactions ◽  
Peach Tree ◽  
Growth Habits

A study was conducted to determine genetic control of the columnar or pillar (PI) growth habit, and to evaluate the effects of interactions of various genes that influence peach [Prunus persica (L.) Batsch (Peach Group)] growth habit. The PI habit (brbr) examined in this study was inherited as a monogenic trait expressing incomplete dominance. The heterozygous Brbr derived from crosses between standard (ST) and PI genotypes was recognized as an upright (UP) tree with narrower branch angles than ST trees but wider than PI trees. The combination of brbr and brachytic dwarf (DW) (dwdw) produced dwarf-pillar (DWPI) trees. The effects of the heterozygous Brbr in combination with dw and/or compact (CT) (Ct) could not be recognized by visual observation. Compact pillar (CTPI) trees resulted from the expression of Ct_ brbr. These trees were distinguished from globe-shaped (GL) trees (Ct_Brbr) by the more upright growth habit of the CTPI trees. This genetic study highlights the genetic plasticity of tree growth habit in peach. The investigation of novel growth habits extends our concept of the peach tree. Some growth habits such as PI may have commercial potential for high-density peach production systems. Others, such as DWPI and CTPI may have potential as ornamentals.

scholarly journals A functional model of tree growth and tree architecture.

Silva Fennica ◽  
1997 ◽  
Vol 31 (3) ◽  
Author(s):  
Philippe de Reffye ◽  
Daniel Barthélémy ◽  
Frédéric Blaise ◽  
Thierry Fourcaud ◽  
François Houllier
Keyword(s):  
Tree Growth ◽  
Functional Model ◽  
Tree Architecture

scholarly journals Parametric identification of a functional - structural tree growth model and application to beech trees (Fagus sylvatica)

2008 ◽  
Vol 35 (10) ◽  
pp. 951 ◽  
Author(s):  
Véronique Letort ◽  
Paul-Henry Cournède ◽  
Amélie Mathieu ◽  
Philippe de Reffye ◽  
Thiéry Constant
Keyword(s):  
Fagus Sylvatica ◽  
Tree Growth ◽  
Parametric Identification ◽  
Critical Issue ◽  
Tree Architecture ◽  
Specific Description ◽  
Fagus Sylvatica L ◽  
Species Specific ◽  
Tree Growth Model ◽  
Source Sink

Functional–structural models provide detailed representations of tree growth and their application to forestry seems full of prospects. However, owing to the complexity of tree architecture, parametric identification of such models remains a critical issue. We present the GreenLab approach for modelling tree growth. It simulates tree growth plasticity in response to changes of their internal level of trophic competition, especially topological development and cambial growth. The model includes a simplified representation of tree architecture, based on a species-specific description of branching patterns. We study whether those simplifications allow enough flexibility to reproduce with the same set of parameters the growth of two observed understorey beech trees (Fagus sylvatica L.) of different ages in different environmental conditions. The parametric identification of the model is global, i.e. all parameters are estimated simultaneously, potentially providing a better description of interactions between sub-processes. As a result, the source–sink dynamics throughout tree development is retrieved. Simulated and measured trees were compared for their trunk profiles (fresh masses and dimensions of every growth units, ring diameters at different heights) and compartment masses of their order 2 branches. Possible improvements of this method by including topological criteria are discussed.

DEVELOPING PEACH CULTIVARS WITH NOVEL TREE GROWTH HABITS

2006 ◽  
pp. 61-64 ◽  
Author(s):  
R. Scorza ◽  
S. Miller ◽  
D.M. Glenn ◽  
W.R. Okie ◽  
T. Tworkoski
Keyword(s):  
Tree Growth ◽  
Growth Habits

scholarly journals 169 Root Characteristics of Peach Trees with Different Shoot Growth Habits

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 419C-419
Author(s):  
T.J. Tworkoski ◽  
R. Scorza
Keyword(s):  
Tree Growth ◽  
Shoot Growth ◽  
Lateral Roots ◽  
Dry Weight ◽  
Root Systems ◽  
Peach Tree ◽  
Root Characteristics ◽  
Growth Habits ◽  
Lateral Branches ◽  
Peach Trees

Peach trees (Prunus persica L.) with diverse shoot growth habits have been developed, but little is known about their root systems. Characterizing shoot and root systems can improve basic understanding of peach tree growth and be important in the development of rootstocks and own-rooted trees. This research determined shoot and root characteristics of four peach tree growth habits (compact, dwarf, pillar, and standard). Seed from four peach growth habits were planted in 128-L containers, grown outside during the 1998 growing season, and then harvested. Compact tree leaf number (1350/tree) was twice, but leaf area (6 cm2/leaf) was half, that of pillar and standard trees. The number of lateral branches in compact trees (34) was nearly three-times more than in pillar and standard trees. The leaf area index (LAI) of pillar trees was greater than compact and standard trees (13 compared with 4 and 3, respectively) due to a narrower crown diameter. Dwarf tree shoots were distinct with few leaves (134 per tree) and a large LAI of 76. Compact trees grew more higher-order lateral roots than pillar and standard trees. More second-order lateral (SOL) roots were produced by compact than standard trees (1.2 vs. 0.8 SOL roots/cm first-order lateral root). Pillar trees had higher shoot-to-root dry weight ratios (2.4) than compact and standard trees (1.7 for both) due to smaller root dry weights. The results indicate fundamental differences in root characteristics among the peach tree growth habits. Compact trees had more higher order lateral roots in roots originating near the root collar (i.e., more fibrous roots), and this correlated with more lateral branches in the canopy. Shoot weights were the same among pillar, compact, and standard trees but root weights were less in pillar trees, resulting in greater shoot-to-root dry weight ratios. These results indicate significant differences in root as well as shoot architecture among growth habits that can affect their use as scion or rootstock varieties.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

A Macintosh Interface for the Cameca Camebax-Micro Electron Microprobe

1990 ◽  
Vol 48 (1) ◽  
pp. 438-439
Author(s):  
Carl E. Henderson
Keyword(s):  
Electron Microprobe ◽  
Processing Speed ◽  
Word Processing ◽  
State Of The Art ◽  
Computer Control ◽  
Third Party ◽  
Disk Storage ◽  
The Past ◽  
User Facility ◽  
Instrument Control

Over the past few years it has become apparent in our multi-user facility that the computer system and software supplied in 1985 with our CAMECA CAMEBAX-MICRO electron microprobe analyzer has the greatest potential for improvement and updating of any component of the instrument. While the standard CAMECA software running on a DEC PDP-11/23+ computer under the RSX-11M operating system can perform almost any task required of the instrument, the commands are not always intuitive and can be difficult to remember for the casual user (of which our laboratory has many). Given the widespread and growing use of other microcomputers (such as PC’s and Macintoshes) by users of the microprobe, the PDP has become the “oddball” and has also fallen behind the state-of-the-art in terms of processing speed and disk storage capabilities. Upgrade paths within products available from DEC are considered to be too expensive for the benefits received. After using a Macintosh for other tasks in the laboratory, such as instrument use and billing records, word processing, and graphics display, its unique and “friendly” user interface suggested an easier-to-use system for computer control of the electron microprobe automation. Specifically a Macintosh IIx was chosen for its capacity for third-party add-on cards used in instrument control.

Scanning Transmission Electron Microscopy of Polyethylene Crystals

1980 ◽  
Vol 38 ◽  
pp. 242-245
Author(s):  
F. Khoury ◽  
L. H. Bolz
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Crystallization Temperature ◽  
Scanning Transmission Electron Microscopy ◽  
Growth Habit ◽  
Lateral Growth ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Growth Habits

The lateral growth habits and non-planar conformations of polyethylene crystals grown from dilute solutions (<0.1% wt./vol.) are known to vary depending on the crystallization temperature.1-3 With the notable exception of a study by Keith2, most previous studies have been limited to crystals grown at <95°C. The trend in the change of the lateral growth habit of the crystals with increasing crystallization temperature (other factors remaining equal, i.e. polymer mol. wt. and concentration, solvent) is illustrated in Fig.l. The lateral growth faces in the lozenge shaped type of crystal (Fig.la) which is formed at lower temperatures are {110}. Crystals formed at higher temperatures exhibit 'truncated' profiles (Figs. lb,c) and are bound laterally by (110) and (200} growth faces. In addition, the shape of the latter crystals is all the more truncated (Fig.lc), and hence all the more elongated parallel to the b-axis, the higher the crystallization temperature.

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