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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Storage of rooted woody cuttings

Runge, George Fredrick. January 1957 (has links)
Call number: LD2668 .T4 1957 R84 / Master of Science
12

Application de la méthode graphique à l'étude du mécanisme de la déglutition chez les mammifères et les oiseaux Recherches anatomiques sur le bouturage des cactées /

Arloing, Saturnin January 1900 (has links)
Thèse : Botanique : Faculté des sciences de Paris : 1877. Thèse : Zoologie : Faculté des sciences de Paris : 1877. / Titre provenant de l'écran-titre. Bibliogr. p. 93-94.
13

Clonal variations in rooting of Simmondsia chinensis (Link) Schneider

Cardran, Paula January 1980 (has links)
No description available.
14

Aspects of the role of cytokinins in adventitious root formation.

Taylor, Joslyn Leanda Susan. 14 January 2014 (has links)
The initiation and development of adventitious roots in cuttings are highly complex processes, influenced by both endogenous and exogenous factors. These vary from the environmental factors prior to the striking of the cutting, to the anatomical and physiological factors, within the stem. Encompassed are the nutrient status, physiological age and degree of differentiation of the tissues, and the balance of endogenous rooting inhibitors and/or promoters (including hormones). The role of cytokinins in root initiation and development has been perceived as that of an inhibitor. This investigation considered several aspects of the role played by cytokinins in the process of root development. A qualitative/quantitative analysis of the cytokinin-like activity in stem cuttings of several plants, including both easy- and difficult-to-root species was conducted on a comparative basis. There was no clear correlation between the type / level of cytokinins detected in the cuttings and the relative ease of root formation. Both qualitative and quantitative changes in the compounds exhibiting activity in the soybean callus bioassay were observed over the period of root formation in Impatiens stem cuttings. The effects on root formation in cuttings of exogenously applied auxins and cytokinins were investigated. Auxins generally promoted root number and elongation at relatively high concentrations (10[-4] M), but showed less effect on lateral root initiation and development. At high concentrations, cytokinins strongly inhibited root development, but did promote lateral root growth. In suspension culture, the effect of these hormones differed slightly, with IAA and IBA having no significant effect on root development, but NAA strongly stimulating lateral root initiation. Zeatin (10¯¹¹ M) significantly increased root length and the number of lateral roots produced. The effect of treatment of the stem cuttings with potassium permanganate and centrifugation was examined. While both these treatments have been perceived to increase root production in cuttings, no significant improvement in rooting ability following centrifugation (relative to the control) was observed. Impatiens cuttings centrifuged in the presence of distilled water showed a significantly reduced rooting ability relative to those centrifuged in the dry state. Treatment with an 8-hour pulse in 0.05 % potassium permanganate significantly increased the average root length. These treatments had an effect on the cytokinin levels and distribution in the stem cuttings. Slightly higher levels of cytokinins were associated with the increase in root number and length in both experiments. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 1996.
15

Effect of acacia gum on bare root nursery crops and in cutting propagation

Creel, Sarah Frances. January 2006 (has links) (PDF)
Thesis(M.S.)--Auburn University, 2006. / Abstract. Includes bibliographic references.
16

Stem cutting propagation of the endangered species, Clematis socialis (Kral)

Johnson, Connie Nicole, January 2006 (has links) (PDF)
Thesis(M.S.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references.
17

Cutting propagation and container production of Rudy Haag burning bush [Euonymus alatus 'Rudy Haag']

Poston, Amy Lynn, January 2007 (has links) (PDF)
Thesis (M.S.)--University of Kentucky, 2007. / Title from document title page (viewed on June 28, 2007). Document formatted into pages; contains: vii, 74 p. Includes abstract and vita. Includes bibliographical references (p. 64-73).
18

Influence of ozone on two white clover (Trifolium repens) clones :: a phenotypic investigation /

Johnson, Michael S. 01 January 1996 (has links) (PDF)
No description available.
19

ROOT DEVELOPMENT OF STEM CUTTINGS IN SELECTED PLANT SPECIES AS INFLUENCED BY BORON, CALCIUM, AND 1H-INDOLE-BUTANOIC ACID (IBA).

Livingston, Margaret. January 1985 (has links)
No description available.
20

Rooting techniques for selected tree species

Laubscher, Charles Petrus January 1999 (has links)
Thesis (MTech (Horticulture))--Cape Technikon, Cape Town, 1999 / Vegetative propagation techniques for rooting of cuttings of indigenous tree species, i.e. Olea europaea subsp. African, Podocarpus falcatus, Syzigium cordatum and introduced species, i.e. Acacia mearnsii, A. melanoxylon, Eucalyptus grandis and Melia azedarach were studied and improved at the Cape Technikon nursery from May 1994 to June 1998. These tree species are considered problematic since the indigenous species produce unwanted fruits in urban areas which attract frugivores, while the introduced species are a threat to indigenous vegetation and natural habitats, though they are of great commercial value. The progress in mutation breeding of sexual sterility in most of the problematic species created a need to propagate them vegetatively. Without cloning of seedless species, their beauty and economic value to South Africa will be lost, as the indigenous species will be neglected, while invasive species will continue to threaten the natural habitat of indigenous species. Experiments were conducted to test age, type and length of cuttings, environmental factors, growth season, hormone application, various treatments and rooting media for each of these species. This study showed that relatively few publications relevant to the vegetative propagation of indigenous tree species are available. However, some introduced species, e.g. Eucalyptus grandis, are propagated successfully for commercial forestry purposes. Ficus sur and Syzicium cordatum showed the highest rooting success, i.e. 85-90%, followed by Olea europaea subsp. africana (75-80%), and Podocarpus falcatus (60%). The introduced species showed no rooting success, however, callusing in Eucalyptus grandis (35-61%), and Melia azedarach (50%), and survival rates in Acacia mearnsii (10%) and A. melanoxylon (20%) were achieved. Treatments, i.e. etiolation, placing plants under stress, sealing basal stems of cuttings, and fungicide treatments all showed positive results in promoting callusing success. The study showed that rooting success in individual species are directly related to the growth stage of parent plants as well as the season during which the cuttings were taken. With progress towards successful vegetative propagation of sterile problem plant species, propagators and horticulturists can in future apply these improved techniques. These plants will then continue to supply timber, fire wood and improve aesthetics in the South African urban environment.

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