Changes in root growth patterns of (Picea abies) spruce roots by inoculation with an ectomycorrhizal fungusPisolithus tinctorius and jasmonic acid treatment

Trees ◽  
1996 ◽  
Vol 10 (6) ◽  
pp. 410-414 ◽  
Author(s):  
M. Regvar ◽  
N. Gogala
Keyword(s):  
Picea Abies ◽  
Jasmonic Acid ◽  
Root Growth ◽  
Acid Treatment ◽  
Growth Patterns

Root and Stem Growth Patterns of Young `Mauritius' Lychee Trees

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 815-818 ◽  
Author(s):  
Thomas E. Marler ◽  
Leah E. Willis
Keyword(s):  
Root Growth ◽  
Stem Growth ◽  
Growth Patterns ◽  
Extension Growth ◽  
Glass Wall ◽  
Litchi Chinensis ◽  
Root Extension ◽  
Stem Extension ◽  
Root Observation

`Mauritius' lychee (Litchi chinensis Sonn.) trees were planted in root observation chambers in July 1990 to determine the pattern of root and stem extension growth during 12 months. Root and stem lengths were measured at intervals ranging from 7 to 18 days from Aug. 1990 until Aug. 1991. During each period of active canopy growth, up to six stem tips were tagged and measured. Root growth was determined by measuring tracings of the extension of each root in a visible plane of the glass wall of the observation chambers. Stem growth was cyclic, with distinct periods of rapid extension followed by periods with no extension. In contrast, root growth was fairly continuous with only three periods of no visible root extension. Mean absolute extension rates were higher for stems than for roots. There were no consistent relationships between the timing of root and stem extension growth.

scholarly journals Postharvest jasmonic acid treatment of sugarbeet roots reduces rot due to Botrytis cinerea, Penicillium claviforme, and Phoma betae

2012 ◽  
Vol 65 ◽  
pp. 1-4 ◽  
Author(s):  
Karen Klotz Fugate ◽  
Jocleita Peruzzo Ferrareze ◽  
Melvin D. Bolton ◽  
Edward L. Deckard ◽  
Larry G. Campbell
Keyword(s):  
Jasmonic Acid ◽  
Botrytis Cinerea ◽  
Acid Treatment ◽  
Penicillium Claviforme ◽  
Phoma Betae

scholarly journals Contemporary Concepts of Root System Architecture of Urban Trees

2010 ◽  
Vol 36 (4) ◽  
pp. 149-159
Author(s):  
Susan Day ◽  
P. Eric Wiseman ◽  
Sarah Dickinson ◽  
J. Roger Harris
Keyword(s):  
Built Environment ◽  
Root Growth ◽  
Root System ◽  
Root Architecture ◽  
Root Systems ◽  
Growth Patterns ◽  
Urban Trees ◽  
Rooting Depth ◽  
Similar Species ◽  
Urban Settings

Knowledge of the extent and distribution of tree root systems is essential for managing trees in the built environment. Despite recent advances in root detection tools, published research on tree root architecture in urban settings has been limited and only partially synthesized. Root growth patterns of urban trees may differ considerably from similar species in forested or agricultural environments. This paper reviews literature documenting tree root growth in urban settings as well as literature addressing root architecture in nonurban settings that may contribute to present understanding of tree roots in built environments. Although tree species may have the genetic potential for generating deep root systems (>2 m), rooting depth in urban situations is frequently restricted by impenetrable or inhospitable soil layers or by underground infrastructure. Lateral root extent is likewise subject to restriction by dense soils under hardscape or by absence of irrigation in dry areas. By combining results of numerous studies, the authors of this paper estimated the radius of an unrestricted root system initially increases at a rate of approximately 38 to 1, compared to trunk diameter; however, this ratio likely considerably declines as trees mature. Roots are often irregularly distributed around the tree and may be influenced by cardinal direction, terrain, tree lean, or obstacles in the built environment. Buttress roots, tap roots, and other root types are also discussed.

scholarly journals Root and Shoot Growth Periodicity of Green Ash, Scarlet Oak, Turkish Hazelnut, and Tree Lilac

1995 ◽  
Vol 120 (2) ◽  
pp. 211-216 ◽  
Author(s):  
J. Roger Harris ◽  
Nina L. Bassuk ◽  
Richard W. Zobel ◽  
Thomas H. Whitlow
Keyword(s):  
Root Growth ◽  
Root Length ◽  
Shoot Growth ◽  
Lateral Roots ◽  
Growth Patterns ◽  
Extension Rate ◽  
Green Ash ◽  
Growth Measurement ◽  
Root And Shoot Growth ◽  
Growth Periodicity

The objectives of this study were to determine root and shoot growth periodicity for established Fraxinus pennsylvanica Marsh. (green ash), Quercus coccinea Muenchh. (scarlet oak), Corylus colurna L. (Turkish hazelnut), and Syringa reticulata (Blume) Hara `Ivory Silk' (tree lilac) trees and to evaluate three methods of root growth periodicity measurement. Two methods were evaluated using a rhizotron. One method measured the extension rate (RE) ofindividual roots, and the second method measured change in root length (RL) against an observation grid. A third method, using periodic counts of new roots present on minirhizotrons (MR), was also evaluated. RE showed the least variability among individual trees. Shoot growth began before or simultaneously with the beginning of root growth for all species with all root growth measurement methods. All species had concurrent shoot and root growth, and no distinct alternating growth patterns were evident when root growth was measured by RE. Alternating root and shoot growth was evident, however, when root growth was measured by RL and MR. RE measured extension rate of larger diameter lateral roots, RL measured increase in root length of all diameter lateral roots and MR measured new root count of all sizes of lateral and vertical roots. Root growth periodicity patterns differed with the measurement method and the types of roots measured.

Disentangling the multi-faceted growth patterns of primary Picea abies forests in the Carpathian arc

2019 ◽  
Vol 271 ◽  
pp. 214-224 ◽  
Author(s):  
Jesper Björklund ◽  
Miloš Rydval ◽  
Jonathan S. Schurman ◽  
Kristina Seftigen ◽  
Volodymyr Trotsiuk ◽  
...  
Keyword(s):  
Picea Abies ◽  
Growth Patterns

scholarly journals Differential effects of jasmonic acid treatment of Brassica nigra on the attraction of pollinators, parasitoids, and butterflies

2008 ◽  
Vol 128 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Maaike Bruinsma ◽  
Harm IJdema ◽  
Joop J.A. Van Loon ◽  
Marcel Dicke
Keyword(s):  
Jasmonic Acid ◽  
Acid Treatment ◽  
Brassica Nigra ◽  
Differential Effects

Root Growth Patterns and Morphometric Change Based on the Growth Media

2016 ◽  
Vol 28 (6) ◽  
pp. 621-631 ◽  
Author(s):  
Eric R. Schultz ◽  
Anna-Lisa Paul ◽  
Robert J. Ferl
Keyword(s):  
Root Growth ◽  
Growth Patterns ◽  
Growth Media

scholarly journals Jasmonic acid treatment to part of the root system is consistent with simulated leaf herbivory, diverting recently assimilated carbon towards untreated roots within an hour

2008 ◽  
Vol 31 (9) ◽  
pp. 1229-1236 ◽  
Author(s):  
GUNNAR JAKOB HENKES ◽  
MICHAEL R. THORPE ◽  
PETER E. H. MINCHIN ◽  
ULRICH SCHURR ◽  
URSULA S. R. RÖSE
Keyword(s):  
Jasmonic Acid ◽  
Root System ◽  
Acid Treatment ◽  
Leaf Herbivory

scholarly journals Exogenous Nitro-Oleic Acid Treatment Inhibits Primary Root Growth by Reducing the Mitosis in the Meristem in Arabidopsis thaliana

2020 ◽  
Vol 11 ◽  
Author(s):  
Luciano M. Di Fino ◽  
Ignacio Cerrudo ◽  
Sonia R. Salvatore ◽  
Francisco J. Schopfer ◽  
Carlos García-Mata ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Oleic Acid ◽  
Root Growth ◽  
Acid Treatment ◽  
Primary Root ◽  
Primary Root Growth
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