Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Richard H. Zimmerman"'
Autor:
Brent Black, Richard H. Zimmerman
Publikováno v:
Acta Horticulturae. :267-272
We are testing readily available by-products as constituents in soil-free media and as soil amendments for growing highbush blueberry. These by-products include coal ash, composted sewage sludge and leaf compost. Combinations of ash and compost were
Publikováno v:
HortScience. 36:961-966
The U.S. National Plant Germplasm System (NPGS) currently holds 36 separate accessions of the `Yichang' clone of Malus hupehensis (Pamp.) Rehd. The `Yichang' clone originally entered the United States in 1908 as seed collected for the Arnold Arboretu
Autor:
Richard H. Zimmerman, Stefano Predieri
Publikováno v:
Euphytica. 117:217-227
In vitro shoots of six pear (Pyrus communis L.) cultivars, ‘Conference’, ‘Doyenned'Hiver’, ‘Passe Crassane’, ‘Bartlett’, ‘AbbeFetel’ and ‘Butirra Precoce Morettini’ were irradiated with gamma rays (3.5 Gy). After three subcult
Publikováno v:
Acta Horticulturae. :103-112
As part of a program to develop transgenic `Royal Gala' apple (Malus x domestica Borkh), long-term exposure to antibiotics was compared with short-term vacuum infiltration with an acidified (pH 3.0) medium and/or a range of antibiotics for their effe
Publikováno v:
Small Fruits Review. 1:43-56
RAPD analysis was performed on 40 species of Rubus. Seventy-three percent of the bands produced were polymorphic. These data were sufficient to construct a dendrogram. The results are generally in agreement with the traditional classification of the
Autor:
P. Debergh, Richard H. Zimmerman
Micropropagation is a technology that has developed within the past 30 years. Earlier overviews of plant tissue culture have reviewed micropropagation as just one of many tissue culture procedures in use. Since the applications of this technology hav
In 1980, a conference on tissue culture of fruit crops was held at Beltsville to summarize the current status of this technology and to stimulate interest in it among research scientists, students, and commercial producers in the U. S. Interest in th
Long-term evaluation of micropropagated apple trees: vegetative growth, cropping, and photosynthesis
Autor:
Richard H. Zimmerman, G. L. Steffens
Publikováno v:
Scientia Horticulturae. 66:69-76
Micropropagated apple ( Malus domestica Borkh.) trees of 20 cultivars, of both standard and spur-type growth habits, were grown for up to 14 years and measurements taken annually of size (trunk cross-sectional area), flowering and yield. For three co
Publikováno v:
Plant Cell Tissue and Organ Culture (PCTOC). 43:207-213
Six cultivars of apple and two of red raspberry consistently produced equal or significantly better shoot proliferation on modified Murashige and Skoog medium gelled with a mixture of corn starch and Gelrite than on the same medium gelled with agar.
Autor:
Donald T. Krizek, Helen A. Norman, Richard H. Zimmerman, Stefano Predieri, Roman M. Mirecki, P. Pillai
Publikováno v:
Environmental and Experimental Botany. 35:151-160
In vitro shoots of cv. Doyenne d'Hiver pear (Pyrus communis L.) were irradiated for 6 hr per day with 12 kJ m−2 day−1 of biologically effective UV-B radiation (UV-BBE) and assessed for modification of membrane lipids. There was no detectable UV-B