scholarly journals Survival of Juvenile <i>Acer grandidentatum</i> Nutt. (Bigtooth Maple, Aceraceae) in Central Texas Woodlands

2020 ◽  
Vol 11 (03) ◽  
pp. 413-425
Author(s):  
O. W. Van Auken ◽  
D. L. Taylor
Keyword(s):  
Acer Grandidentatum ◽  
Central Texas ◽  
Bigtooth Maple

scholarly journals Etiolation Improves Rooting of Bigtooth Maple Cuttings

2012 ◽  
Vol 22 (3) ◽  
pp. 305-310 ◽  
Author(s):  
Melody Reed Richards ◽  
Larry A. Rupp
Keyword(s):  
Butyric Acid ◽  
Naphthaleneacetic Acid ◽  
Small Water ◽  
Acer Grandidentatum ◽  
Bigtooth Maple ◽  
Wild Accessions

Bigtooth maple (Acer grandidentatum) has potential as a small, water conserving landscape tree in western landscapes. This potential has been hindered in part by the difficulty in asexually propagating superior accessions. The ability of etiolation to enhance rooting of softwood cuttings of selected wild accessions was determined by grafting six accessions onto seedling rootstocks to use as stock plants. Etiolation was applied to stock plants by placing open-ended, black, velour, drawstring bags over the end of pruned shoots at bud swell allowing new shoots to develop and grow out the end of the bag while leaving the base of the shoot covered. In 2009 and 2010, cuttings from etiolated and nonetiolated shoots were treated with 4000 ppm indole-3-butyric acid (IBA) + 2000 ppm naphthaleneacetic acid (NAA), stuck in a premoistened 3 perlite:1 peat (by volume) rooting substrate and placed under intermittent mist. After 4 weeks, 89% (2009) and 85% (2010) of the etiolated cuttings rooted and only 47% (2009) and 17% (2010) of the nonetiolated cuttings rooted. Etiolated cuttings produced on average 11.3 (2009) and 7.2 (2010) roots per cutting and nonetiolated 2.1 (2009) and 0.5 (2010) roots per cutting. Etiolation, and its application through the use of black cloth bags, can be an effective way to increase the rooting of bigtooth maple cuttings and the availability of these plants for use in water conserving landscaping.

scholarly journals (292) In Vitro Rooting of Bigtooth Maple Microshoots

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1081D-1081
Author(s):  
Clare Bowen-O'Connor ◽  
John Hubstenberger ◽  
Dawn Van Leeuwen ◽  
Rolston St. Hilaire
Keyword(s):  
Culture Media ◽  
Shoot Proliferation ◽  
Leaf Size ◽  
Root Induction ◽  
Auxin Treatment ◽  
Tissue Culture Media ◽  
Acer Grandidentatum ◽  
Number Of Leaves ◽  
Bigtooth Maple

Double-node microshoots of bigtooth maple (Acer grandidentatum Nutt.) were rooted in vitro on Driver-Kuniyuki Walnut (DKW) tissue culture media containing indole acetic acid (IAA). Microshoots represented six sources from three locations within Texas and New Mexico. Microshoots were placed in Phytatrays II™ containing DKW media with no plant growth regulator (DKW0) to reduce the high cytokinin levels used for shoot proliferation. Microshoots were induced to form roots for 15 days by placing them on DKW media containing IAA at 0.01, 1, 2.5, 5, 10, 15 or 20 μmol. Rooting frequency, the number of leaves and callus area were recorded every 30 days for 60 days. Rooting frequency increased up to 29% as IAA concentration increased (P= 0.004). However, as much as 71% of shoots for one of the three Guadalupe Mountain, Texas, sources rooted without auxin treatment after 30 days. The IAA concentration also affected the number of leaves per shoot (P= 0.0228) which averaged seven and callus area (P= <0.0001) which averaged 52 mm2. Average leaf size was 307 mm2. We conclude that IAA induces rooting in microshoots of bigtooth maple after 15 days of root induction. However, one source rooted without auxin treatment. The presence of callus does not interfere with root formation.

scholarly journals Selection and Budding Propagation of Native Bigtooth Maple for Water-conserving Landscapes

2012 ◽  
Vol 22 (5) ◽  
pp. 669-676 ◽  
Author(s):  
Melody Reed Richards ◽  
Larry A. Rupp ◽  
Roger Kjelgren ◽  
V. Philip Rasmussen
Keyword(s):  
Time Course ◽  
Wild Plants ◽  
Small Water ◽  
Acer Grandidentatum ◽  
Global Positioning ◽  
Northern Utah ◽  
Bigtooth Maple ◽  
Plant Form ◽  
Wild Accessions ◽  
Selection Of

The potential of bigtooth maple (Acer grandidentatum) as a small, water-conserving landscape tree for the western United States is limited by the selection of superior accessions from a morphologically diverse gene pool and the ability to propagate wild plants in a nursery environment. Superior accessions were selected based primarily on red fall color. Aerial digital images taken during peak fall color in 2007 and 2008 were synchronized with flight global positioning system (GPS) track files using digital image editor software and visually compared with corresponding satellite images to determine the exact latitude and longitude of selected trees on the ground. Trees were physically located using GPS technology then visually evaluated for initial selection. Criteria included fall color, habitat, relative disease and insect resistance, bud quality, and plant form. From 56 observed trees of interest, six were selected for propagation. Through time-course experiments using multistemmed, bigtooth maple seedling rootstocks in a coppiced stoolbed, the optimum time for chip budding scions of wild accessions in northern Utah was determined to be July through mid-August. Further evaluation of accessions for use in the landscape industry is required.

Propagation protocol for bigtooth maple (Acer grandidentatum Nutt.)

2012 ◽  
Vol 13 (3) ◽  
pp. 191-194
Author(s):  
K. J. Woodruff ◽  
D. J. Regan ◽  
A. S. Davis
Keyword(s):  
Acer Grandidentatum ◽  
Bigtooth Maple

Architecture of Radiolitid Rudist (Mollusca) Shell-Wall Structures and its Phylogenetic Implications

1975 ◽  
Vol 33 ◽  
pp. 686-687
Author(s):  
David H. Sturm ◽  
Bob F. Perkins
Keyword(s):  
Phylogenetic Relationships ◽  
Outer Wall ◽  
Shell Microstructure ◽  
Shell Wall ◽  
Wall Structures ◽  
Phylogenetic Implications ◽  
Cellular Wall ◽  
Superfamily Analysis ◽  
Central Texas

Each of the seven families of rudists (Mollusca, Bivalvia, Hippuritacea) is characterized by distinctive shell-wall architectures which reflect phylogenetic relationships within the superfamily. Analysis of the complex, calcareous, cellular wall of the attached valve of the radiolite rudist Eoradiolites davidsoni (Hill) from the Comanche Cretaceous of Central Texas indicates that its wall architecture is an elaboration of the simpler monopleurid rudist wall and supports possible radiolite-monopleurid relationships.Several well-preserved specimens of E. davidsoni were sectioned, polished, etched, and carbon and gold coated for SEM examination. Maximum shell microstructure detail was displayed by etching with a 0.7% HC1 solution from 80 to 100 seconds.The shell of E. davidsoni comprises a large, thick-walled, conical, attached valve (AV) and a small, very thin, operculate, free valve (FV) (Fig. 1a). The AV shell is two-layered with a thin inner wall, in which original structures are usually obliterated by recrystallization, and a thick, cellular, outer wall.

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