Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"Adventitious roots"”.
-
The Origin of Adventitious Roots In Coleus
It has long been known that adventitious roots develop from shoots and that adventitious shoots develop from roots. This fact is an important one to the horticulturist in propagating plants by stem or, root cuttings. The point of origin of these structures has not been fully presented. There have …
-
Insights into the Molecular Mechanism of Streptomyces ipomoeae Pathogenesis: Thaxtomin C Biosynthesis and Regulation
… disease marked by highly necrotic destruction of adventitious roots, including the development of necrotic lesions on the fleshy storage roots. To facilitate further genetic manipulation of this agriculturally important pathogen, an effective gene transfer system for S. ipomoeae was developed by …
-
Variation for root and shoot growth among wheat cultivars and the effects of barley yellow dwarf virus on growth
… dry weight, root length, numbers of seminal and adventitious roots, and root to shoot ratio. Infection with BYDV caused noticeable symptoms in the roots prior to the shoots. Root length and root to shoot ratios were decreased by infection, but number of adventitious roots was often increased by …
-
The role of auxin and ethylene in adventitious root formation in Arabidopsis and tomato
Adventitious roots emerge from aerial plant tissues. Although important for clonal propagation of commercially important crop species, few studies have explored the mechanisms driving the development of these roots. This thesis research explored the hormonal controls and molecular mechanisms of …
-
A microculture approach towards enhanced productivity and genetic improvement of pecan (Carya illinoensis)
… medium. Prolific production of axillary and adventitious shoots from the embryonic axis was induced by adding 5 $\mu$M IBA and 20 $\mu$M BAP to the culture media. The retention of cotyledons was essential for shoot initiation and long-term shoot development. TDZ at 25 $\mu$M produced somatic …
-
The Influence of Hydrogeomorphology, Soil Redox Conditions, and Salinity on the Spatial Zoning of Saltgrass, Salt Rush, and Cattails in Scotts Creek Marsh, Swanton Pacific Ranch, CA
… utilizing morphological adaptations (arenchyma, adventitious roots) to their root systems. The study concluded that the spatial zoning of the three dominate halophyte species within SCM was most likely due to slight differences in the water levels and salinity. The halophytes within SCM were …
-
Genomic approaches to understand sweetpotato root development in relation to abiotic factors
… transcripts between fibrous and young storage roots; the majority of these transcripts are involved in basic cellular processes as well as development and differentiation. A set of regulatory genes, such as BEL1-like (BELL), basic helix-loop-helix (bHLH) and HD-Zip homeobox, and signal …
-
Physiological and Morphological Responses of Nitrogen-Fixing Red Alder (Alnus Rubra) and Sitka Alder (Alnus Viridis Ssp. Sinuata) to Flooding: Inter- and Intraspecific Comparisons
… within the nodule. Red alder developed extensive adventitious and new secondary roots during the flood, while sitka alder formed few adventitious roots, lost much of its root and leaf biomass, and showed no restoration of growth during flooding or recovery. Differences in flooding response of red …
-
The combined effects of salinity and sulfide on the growth and physiology of the freshwater marsh plant Pancium hemitomon J.A. Schultes
… a sulfide-induced stimulus in the production of adventitious tissue that was completely inhibited by elevated porewater salinities. After 19 weeks, salinity at 4 ppt and elevated sulfide concentrations were deleterious to overall plant growth. A sulfide-induced growth stimulation in adventitious …
-
Using targeted phenomics and environmental proxies to understand Phytophthora medicaginis and Phytophthora root rot resistance in Australian chickpea
… variety, Yorker, had an eightfold increase in adventitious root growth when compared with the PRR moderately resistant interspecific backcross line, 04067- 81-2-1-1. Phytophthora spp. are reportedly attracted to branch sites and leached exudates. It is proposed that compromised root barriers at …
-
Improving and elucidating factors regulating black walnut (Juglans nigra L.) clonal propagation
… black walnut to predictably and reliably produce adventitious roots is often the greatest hurdle to successful propagation protocols. The objective of this research was to develop a reproducible and dependable clonal propagation protocol for black walnut, as well as to study the mechanisms …
-
Impacts of flooding, herbivory and their interaction on tomato plants growth, development and physiology: A review
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
-
Transport of oxygen in roots of rice (Oryza sativa L.) and of water in developing grape berries (Vitis vinifera L.)
1. Radial oxygen flow in rice roots Measurements of ROL from rice roots grown in either aerated or deoxygenated conditions were combined with root histochemisrty and biochemistry. It was shown that the pattern of ROL from rice roots of stagnantly grown plants correlated with development of the …