scholarly journals Localization and Quantification of Total UV Absorbing Compounds in Chinese Elm (Ulmus parvifolia)

2018 ◽  
Vol 24 (S1) ◽  
pp. 1194-1195
Author(s):  
Vanessa A. Ferchaud ◽  
Yadong Qi ◽  
Kit L. Chin
Author(s):  
B. L. Redmond ◽  
Christopher F. Bob

The American Elm (Ulmus americana L.) has been plagued by Dutch Elm Disease (DED), a lethal disease caused by the fungus Ceratocystis ulmi (Buisman) c. Moreau. Since its initial appearance in North America around 1930, DED has wrought inexorable devastation on the American elm population, triggering both environmental and economic losses. In response to the havoc caused by the disease, many attempts have been made to hybridize U. americana with a few ornamentally less desirable, though highly DED resistant, Asian species (mainly the Siberian elm, Ulmus pumila L., and the Chinese elm Ulmus parvifolia Jacq.). The goal is to develop, through breeding efforts, hybrid progeny that display the ornamentally desirable characteristics of U. americana with the disease resistance of the Asian species. Unfortunately, however, all attempts to hybridize U. americana have been prevented by incompatibility. Only through a firm understanding of both compatibility and incompatibility will it be possible to circumvent the incompatibility and hence achieve hybridization.


EDIS ◽  
2018 ◽  
Vol 2018 (3) ◽  
Author(s):  
Juanita Popenoe ◽  
Caroline G Roper Warwick ◽  
Richard C Beeson, Jr.

This series of Key Plant, Key Pests publications are designed for Florida gardeners, horticulturalists and landscape professionals to help identify common pests associated with common Florida flora. This publication, the second in the Key Plant, Key Pests Series, helps identify the most common pests found on the Chinese Elm (Ulmus parvifolia). This publication provides information and general management recommendations for anthracnose or black elm spot, powdery mildew, trunk canker, borers, eriophyid mites and leaf beetles.https://edis.ifas.ufl.edu/ep559


Phytotaxa ◽  
2020 ◽  
Vol 447 (4) ◽  
pp. 276-282
Author(s):  
ROLAND KIRSCHNER ◽  
HERMINE LOTZ-WINTER ◽  
MEIKE PIEPENBRING

Powdery mildews are common pathogens on wild elm trees as well as on planted ornamentals in Asia and Europe. The taxonomy of the powdery Erysiphe species on elms (Ulmus spp., Ulmaceae) is complicated by taxonomical changes and inconsistently labelled DNA data in databases and publications. Based on morphology and phylogenetic analysis of new collections from Germany and Taiwan, E. ulmi from Europe is revised, while specimens on U. parvifolia from East Asia revealed a separate clade indicating an undescribed species. Morphologically, both species can be distinguished by length of the foot cell of the conidiophore, whereas the teleomorph characteristics were not significantly distinctive.


HortScience ◽  
1991 ◽  
Vol 26 (3) ◽  
pp. 290-292 ◽  
Author(s):  
Orville M. Lindstrom ◽  
Michael A. Dirr

Cold hardiness levels of six cultivars of Chinese elm (Ulmus parvifolia Jacq.), `Select 380', `Orange Ribbon 740', `Emerald Isle', `Emerald Vase', `Drake', and `King's Choice', were determined over eight sample dates from 31 Aug. 1988 to 16 May 1989 and for `Emerald Vase' and `Drake', over three dates from 14 Feb. 1988 to 25 Apr. 1988. All cultivars tested achieved a maximum cold hardiness in December and January of – 21 to – 24C, except `King's Choice', which survived exposure to at least – 30C. `Emerald Isle' and `Emerald Vase' acclimated earlier (both – 9C on 31 Aug.) and reacclimated later (– 6 and – 9C, respectively, on 16 May) than other cultivars tested. `Emerald Vase' and `Drake' exhibited similar cold hardiness levels over the two years tested.


2020 ◽  
Vol 52 ◽  
pp. 1-4
Author(s):  
M. R. Moore ◽  
J. A. Brito ◽  
S. Qiu ◽  
C. G. Roberts ◽  
L. A. Combee

Fagopyrum ◽  
2021 ◽  
Vol 38 (1) ◽  
pp. 15-23
Author(s):  
Aleksandra Golob ◽  
Neja Luzar ◽  
Mateja Germ

Common buckwheat and Tartary buckwheat were grown in Slovenia outdoors at different elevations – 300 m, 600 m and 1180 m a.s.l. Both species were foliarly treated with selenium twice (in the vegetative phase and in the flowering phase). The effects of Se treatment and different growing locations on selected biochemical, physiological and anatomical traits were monitored. In Se treated common buckwheat, amount of chlorophylls was higher in plants from Ljubljana (the lowest elevation – 300 m a.s.l.) than in plants grown in Podbeže (600 m a.s.l.), whereas in control group, plants grown in Ljubljana contained more chlorophylls than plants from Javorje (the highest elevation – 1180 m a.s.l.). In both buckwheat species, Se alone did not affect amount of chlorophylls in any of location. In Se treated common buckwheat plants, the amount of UV absorbing compounds was the highest in plants, grown at the highest elevation. In common buckwheat, Se lowered the number of CaOx in plants, grown in Javorje. Conditions at different elevations, as well as treatments with Se, did not affect potential and effective photochemical efficiency of Photosystem II. Keywords: common buckwheat, Tartary buckwheat, elevation, selenium, morphological characteristics, biochemical characteristics


Sign in / Sign up

Export Citation Format

Share Document