lighter colored containers on root growth and distribution may prove beneficial for a number of important nursery crops. Red maple and eastern redbud are examples of important species in the nursery industry because they are native to the United States
John W. Markham III, Dale J. Bremer, Cheryl R. Boyer, and Kenneth R. Schroeder
Jason J. Griffin, William R. Reid, and Dale J. Bremer
research was to determine if three common turfgrass species used throughout the southern Great Plains inhibit establishment and growth of eastern redbud ( Cercis canadensis ) and pecan ( Carya illinoinensis ). Eastern redbud was selected due to its
Chandra S. Thammina, David L. Kidwell-Slak, Stefan Lura, and Margaret R. Pooler
Redbud ( Cercis L. spp., Fabaceae: Caesalpiniodeae: Cercideae), are popular ornamental small trees or shrubs valued commercially for their showy early spring bloom, heart-shaped leaves, and adaptability to diverse environmental conditions. Each
Sanford Eigenbrode and Jimmy Tipton
Mexican redbud (Cercis canadensis var. mexicana) exhibits resistance to leaf cutter bees (Megachile spp., LCB). Resistant trees (CMG) have glossy leaves and sustain little LCB damage as compared to dull-leaf Mexican redbud (CMD) and the closely related eastern redbud (Cercis canadensis, CC). On average, LCB made 35 times as many cuts per week on CC as on CMG and CMD, even though there were half as many leaves available. Mexican redbud leaves are twice as thick as CC leaves, which may account for LCB preference for the latter. However, leaves from CMG and CMD are similar in leaf thickness, cuticle wax content, and resistance to penetration, yet LCB had an even stronger preference for the former. More than 83 times as many cuts per week were made on CMD over CMG, even though the number of leaves was comparable. CMG leaves have a thicker cuticle on the upper surface that lacks wax crystals present in the CMD and CC. The upper cuticle from CMG leaves also contains fewer lipids and an altered lipid composition (notably fewer long-chain alcohols) compared to CMD.
Dennis J. Werner and Layne K. Snelling
Eastern redbud ( Cercis canadensis L.) and Texas redbud [ Cercis canadensis var. texensis (S. Watson) M. Hopkins] (Fabaceae Lindl. or Leguminosae Adans.) are popular landscape trees. Their moderate size, early spring flowering, and wide
Jimmy L. Tipton and Marcia White
The objective of this study was to compare the structure and efficacy in terms of retarding cuticular transpiration of leaf cuticles from eastern redbud (Cercis canadensis L.) and dull-leaf and glossy-leaf Mexican redbud [Cercis canadensis var. mexicana (Rose) M. Hopk.]. Leaves of Mexican redbud exhibited several xeromorphic characteristics compared to eastern redbud: a smaller, thicker leaf with thicker cuticles, more cuticular wax, a higher specific leaf mass, and greater hydrated water content on a leaf area basis. Mexican redbuds with a glossy leaf differed from those with a dull leaf only in a thicker adaxial cuticle lacking wax crystallite on the surface. Epicuticular wax crystallite were present on the abaxial surface of all leaves examined. Detached leaves of eastern redbud had a higher water loss rate than those of Mexican redbud only on a dry mass basis, not on a leaf area basis. There was no difference in the rate of water loss by detached leaves of glossy-leaf and dull-leaf Mexican redbuds after 4 hours.
Christopher T. Werle, Karla M. Addesso, Blair J. Sampson, Jason B. Oliver, and John J. Adamczyk
River County, MS (30°65′96.84″N, 89°63′50.69″W). To stimulate ambrosia beetle attack, containerized (26.5 L pots, ≈2.5 cm caliper, 2–3 years of age) eastern redbud trees ( Cercis canadensis L.) were purchased from local nurseries and injected with 75 mL
Robert L. Geneve
Seed dormancy in Eastern redbud (Cercis canadensis var. canadensis L.) can be overcome by seedcoat scarification to allow water imbibition, followed by chilling stratification to permit germination. During chilling stratification, there was an increase in the growth potential of the embryo as indicated by the ability of the isolated embryo to germinate in osmotic solutions. Penetration resistance of the testa also decreased after chilling stratification. The combination of seedcoat alteration and the increase in embryonic growth potential was associated with overcoming dormancy in redbud seed. GA3 or ethephon (50 μm) stimulated germination (28% and 60%, respectively) and increased the growth potential of treated embryos. Chemical names used: gibberellic acid (GA3), (2-chloroethyl) phosphoric acid (ethephon).
David L. Kidwell-Slak and Margaret R. Pooler
The genus Cercis L. (redbud; Fabaceae: Caesalpinioideae: Cercideae) is a morphologically and biogeographically diverse group with seven to thirteen species or subspecies that occur in North America, Europe, and Asia ( Chen et al., 2010 ; Davis et
Rodney Jones and Robert Geneve
Redbud (Cercis canadensis) is a small woody ornamental legume that has a hard seed coat, which imposes physical dormancy, typical of many legumes. Redbud also possesses an internal embryo dormancy that must be overcome by stratification. In order to observe the relationship between anatomy and germination, seeds were embedded in JB-4 resin during various developmental and germination stages. The seeds were cut longitudinally with a glass bladed microtome, to observe the radicle, vascular traces and testa. It appears that the vascular traces left from the funiculus serve as a weak point in non-dormant seeds that allows the radicle to rupture the testa during germination.