Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Alden M. Townsend"'
Autor:
Alden M. Townsend, Alan T. Whittemore
Publikováno v:
Journal of the American Society for Horticultural Science. 132:368-373
ADDITIONAL INDEX WORDS. hackberry, sugarberry, Cannabaceae, interspecific hybrids, urban tree breeding ABSTRACT. Artificial cross-pollinations were carried out among seven species of Celtis L. (C. bungeana Blume, C. koraiensis Nakai, C. laevigata Wil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80af3ec6aa71eb70d574b11403d2539b
https://doi.org/10.21273/jashs.132.3.368
https://doi.org/10.21273/jashs.132.3.368
Autor:
Margaret R. Pooler, Alden M. Townsend
Publikováno v:
Journal of Environmental Horticulture. 23:113-117
The elms represent a diverse group of widely distributed temperate trees that are valued for forest products as well as landscape plants. Genetic diversity was examined among 43 Ulmus accessions, including 19 accessions of American elm and representa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac71f9c834a17eed2fee2091d50af233
https://doi.org/10.24266/0738-2898-23.3.113
https://doi.org/10.24266/0738-2898-23.3.113
Autor:
Jo-Ann Bentz, Alden M. Townsend
Publikováno v:
HortScience. 40:1389-1393
A survey was conducted in the 2001 growing season to determine the leafhopper species composition, abundance, richness, diversity, and evenness among trees of three elm (Ulmus sp.) cultivars, two U.S. National Arboretum (USNA) seedling selections of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fa8f4214776a8147f71db43d95e7362
https://doi.org/10.21273/hortsci.40.5.1389
https://doi.org/10.21273/hortsci.40.5.1389
Autor:
Jo-Ann Bentz, Alden M. Townsend
Publikováno v:
Journal of Insect Conservation. 9:29-39
A survey was conducted in the 2001 growing season to examine the leafhopper diversity and abundance among trees of 17 red maple (Acer rubrum) clones. Yellow sticky traps were used to qualify and quantify the number of aerial leafhoppers from 1 May 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb637f5c58b9bdc7437a2c469c1cb3b2
https://doi.org/10.1007/s10841-004-4886-3
https://doi.org/10.1007/s10841-004-4886-3
Nitrogen Fertilization and Use of Container-grown Maple Selections as Hosts by the Potato Leafhopper
Autor:
Alden M. Townsend, Jo-Ann Bentz
Publikováno v:
Journal of the American Society for Horticultural Science. 128:821-826
The suitability of container-grown clones of red maple, Acer rubrum L., as a host to the potato leafhopper, Em- poasca fabae Harris (Homoptera: Cicadellidae), under different fertilization regimes was determined, and compared to different freeman map
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71d4eab41fd1642bab6de646b2557f8b
https://doi.org/10.21273/jashs.128.6.0821
https://doi.org/10.21273/jashs.128.6.0821
Publikováno v:
Journal of the American Society for Horticultural Science. 127:623-627
Controlled pollinations were made between five hemlock (Tsuga) species from eastern North America and Asia, resulting in over 5700 germinating seedlings. A subset of putative hybrid seedlings from each cross was tested for authenticity by various DNA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::281593333378250fd2c0cbc44a6700b4
https://doi.org/10.21273/jashs.127.4.623
https://doi.org/10.21273/jashs.127.4.623
Autor:
Jo-Ann Bentz, Alden M. Townsend
Publikováno v:
Environmental Entomology. 30:533-539
Feeding injury and performance of the potato leafhopper, Empoasca fabae (Harris), was measured on two red maple clones (Acer rubrum L.), a Freeman maple cultivar (A. × freemanii E. Murray), two elm cultivars (Ulmus spp.), and an American elm clonal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::984b4cdfb552117aec39eb28151c2f10
https://doi.org/10.1603/0046-225x-30.3.533
https://doi.org/10.1603/0046-225x-30.3.533
Publikováno v:
HortScience. 34:664-668
Freeman maples (Ace×freemanii E. Murray) are marketed as stress-resistant alternatives to red maples (Acer rubrum L.). Our objective was to compare two cultivars of Freeman maple [`Jeffersred' (Autumn Blaze®) and `Indian Summer'] and five red maple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e665fe6317dab268e92a1b7730c18ced
https://doi.org/10.21273/hortsci.34.4.664
https://doi.org/10.21273/hortsci.34.4.664
Autor:
Jo-Ann Bentz, Alden M. Townsend
Publikováno v:
Environmental Entomology. 28:456-460
Feeding injury, oviposition, and nymphal survivorship of the potato leafhopper, Empoasca fabae (Harris), were measured among 5 red maple, Acer rubrum L., clones and 2 Freeman maple, A. × freemanii E. Murray, cultivars. Symptoms of feeding injury amo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfce530dad883b6fb485694a91236517
https://doi.org/10.1093/ee/28.3.456
https://doi.org/10.1093/ee/28.3.456
Publikováno v:
Journal of the American Society for Horticultural Science. 123:371-375
Little is known about drought stress resistance of Freeman maples (Acer ×freemanii E. Murray), which are hybrids of red maples (A. rubrum L.) and silver maples (A. saccharinum L.). The objective of our study was to measure plant growth and leaf wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a77652ff788bed56c4a4a2ac0ddf51a9
https://doi.org/10.21273/jashs.123.3.371
https://doi.org/10.21273/jashs.123.3.371