2 edition of Studies of genotype-environmental interactions in Impatiens walleriana. found in the catalog.
Studies of genotype-environmental interactions in Impatiens walleriana.
John Edward Bradshaw
by University of East Anglia in Norwich
Thesis (Ph.D.) - University of East Anglia, School of Biological Sciences, 1975.
Impatiens downy mildew only affects impatiens walleriana and its hybrids. However, impatiens downy mildew isn’t the only form of the disease. “There are many different species of downy mildew,” Warfield says. “Most species of downy mildew are host specific, which means they infect only one or . Impatiens downy mildew only affects impatiens walleriana and its hybrids. However, impatiens downy mildew isn’t the only form of the disease. “There are many different species of downy mildew,” Warfield says. “Most species of downy mildew are host specific, which means they infect only one or a few closely related plants.
Petunia and impatiens dry mass gradually decreased as the low-energy exposure occurred later in production; petunias were 26% (weeks 5–6) and 33% (weeks 7–8) smaller, and impatiens were 20% to 31% smaller than ambient plants. Estimated energy savings were 14% to 16% for the eight-week period, but only up to 7% from transplant to flowering. Storage and Germination Assays. Seeds of impatiens (Impatiens walleriana L. cv Impulse Lila) and bell pepper (Capsicum annuum L. cv Atol) were a gift from Novartis (Enkhuizen, The Netherlands) and Enza Zaden (Enkhuizen, The Netherlands), initial viability of the seeds was % and %, respectively. Bell pepper and impatiens seeds were imbibed for up to 8 d in polyethylene.
Polyploidy has the utmost importance in horticulture for the development of new ornamental varieties with desirable morphological traits referring to plant size and vigor, leaf thickness, larger flowers with thicker petals, intense color of leaves and flowers, long lasting flowers, compactness, dwarfness and restored fertility. Polyploidy may occur naturally due to the formation of unreduced. "Double-flowered" describes varieties of flowers with extra petals, often containing flowers within flowers. The double-flowered trait is often noted alongside the scientific name with the abbreviation fl. pl. (flore pleno, a Latin ablative form meaning "with full flower"). The first abnormality to be documented in flowers, double flowers are popular varieties of many commercial flower types.
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Impatiens / ɪ m ˈ p eɪ ʃ ə n s / is a genus of more than 1, species of flowering plants, widely distributed throughout the Northern Hemisphere and the er with the genus Hydrocera (1 species), Impatiens make up the family Balsaminaceae. Common names in North America include impatiens, jewelweed, touch-me-not, snapweed and a rule-of-thumb, "jewelweed" is used Clade: Tracheophytes.
Study species and occurrence data. We focused on the common horticultural annual I. walleriana (Balsaminaceae) as a test case for climate matching because it has been so widely translocated, and because temperate members of this genus have already received considerable attention as invasives, without comparable consideration of the far more numerous tropical by: Studies of Genotype-Environmental Interactions in Impatiens Walleriana.
Author: Bradshaw, J. ISNI: Awarding Body: University of East Anglia Current Institution: University of East Anglia Date of Award: Availability of Full Text. Impatiens downy mildew (IDM), caused by Plasmopara obducens (J. Impatiens noli-tangere), is a devastating disease to impatiens and can cause rapid defoliation and plant death.
This disease was first reported in Germany in on Impatiens noli-tangere, a wild species of Impatiens native to many temperate countries in the northern by: 4. In addition to its ornamental value, the flowers of Impatiens walleriana are edible and the decoction prepared from the dried leaves and roots is used as an abortifacient (Kokwaro ).
Impatiens walleriana seeds were acquired from the Universidade de Coimbra Jardin Botanico (Coimbra, Portugal), and Impatiens balsamina seeds were from Civico Orto Botanico (Trieste, Italy) via Holly Forbes of the UC Berkeley Botanical Garden.
Plants were grown in the greenhouse at UC Davis at 15 to 27°C with a h daylight regimen. Impatiens walleriana behav es similarly Notes on East African Impatiens.
Studies in Balsaminaceae: 3. Factors associated with invasiveness in the genus Impatiens: interaction of species. Impatiens (Impatiens walleriana) has been shown to be a potential cadmium (Cd) hyperaccumulator, but its mechanisms in accumulation and detoxification have not been cuttings of Impatiens were planted in artificially Cd-contaminated soils for 50 days with total target concentrations of 0, 10, 20, 40, 80, and mg/kg.
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Impatiens walleriana ‘DeZire’ and Petunia × hybrid ‘Tidal Wave’ were subjected to a combination of water stress and exposure to wind to evaluate the potential application of these treatments as an alternative to chemical growth retardation.
Air velocities evaluated were,and m s −1 and irrigation treatments were either control or 45% water stress based on. Additionally, it can be found along roads, in secondary forest and other disseminated habitats Impatiens walleriana is the herbaceous perennial plant growing 15 to 60cm tall with broad.
Downy mildew is a newly emergent disease of Impatiens walleriana Hook. (impatiens; Balsaminaceae), a high-value, flowering annual plant contributing $ million annually to the horticulture industry in the United States alone.
This destructive disease threatens the cultivation of impatiens worldwide (Brasier, ).Inwidespread outbreaks of impatiens downy mildew (IDM) disease. Background. Impatiens downy mildew caused by the obligate biotroph Plasmopara obducens (Oomycota, Peronosporales) is one of the most devastating diseases of the ornamental bedding plant Impatiens walleriana, and also may affect interspecific hybrids and related wild species of Impatiens (impatiens; [1–3]).Symptoms of impatiens downy mildew (IDM) include leaf yellowing, stunted.
We describe the responses of Impatiens walleriana to polyethylene glycol (PEG)-induced physiological drought and the potential of exogenous salicylic acid (SA) as stress-ameliorating ens shoot culture was established on 16 different media containing 0–3% PEG and 0–3 mM SA.
After prolonged drought (60 days), water relation parameters, oxidative stress indicators, and. The use of phytoremediation to sustainably recover areas contaminated by toxic heavy metals such as cadmium (Cd) has been made feasible since the discovery of hyperaccumulator plants.
This study examines the potential of the invasive Impatiens glandulifera for phytoremediation propensity of Cd. In these experiments, the plants were exposed to and tested for Cd accumulation; the propensity to. The Genus Impatiens belongs to the family Balsaminaceae, which consists of about species of mostly succulent annual or perennial herbs .Wild Impatiens plants are primarily found in the mountainous regions of South-East Asia, south China, India and Africa while some species are also found in Japan, Europe, Russia and North America .Garden impatiens (Impatiens walleriana.
Ornamental plants Impatiens hawkerii and Impatiens walleriana are susceptible to Tomato spotted wilt virus infection that can be eradicated by meristem-tip propagation.
Comparison of superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (GPX) and ascorbate peroxidase (APX) profiles of healthy, infected and virus-eliminated plants showed that long-term infection did not. Plant Disease Plant Disease First Report of Impatiens Downy Mildew Outbreaks Caused by Plasmopara obducens Throughout the Hawai'ian Islands J.
Crouch, Systematic Mycology and Microbiology Laboratory, USDA-ARS, Baltimore Avenue, Beltsville, MD ; M. Ko, Hawaii Department of Agriculture, S. King Street, Honolulu, HI ; and J.
McKemy. Impatiens New Guinea hybrids and I. walleriana play a prominent role as bedding and balcony plants and may be hosts for quite a lot of virus diseases.
The prevalent virus of Impatiens spp. is INSV. The symptoms observed after infection with INSV are necrotic spots (Figure 24), ring spots or mottling of leaves, and necrotic flecking of Guinea hybrids the discolorations are often.
Vermicompost at 25% enhanced plant growth and controlled Rhizoctonia solani that causes damping off in Patience-plant (Impatiens walleriana) (Asciutto et al. In the present investigation. Single and double flowered impatiens (Impatiens walleriana Hook.f.) plants with symptoms of downy mildew were found in commercial greenhouses in Delaware, Wayne, and Holmes counties, Ohio, in April Plants were stunted and defoliated.
Symptoms on remaining leaves included general chlorosis without discrete spots and downward curling of leaves.Impatiens downy mildew (Plasmopara obducens (J. Schröt.)J.
Schröt. (syn Peronospora obducens) was first reported in the United States inbut widespread outbreaks were observed throughout North America in (5).In Junesymptoms, including severe defoliation while plants retained upright stems, were observed on approximately landscape impatiens (Impatiens walleriana Hook.f.In Mayyoung impatiens plants (Impatiens walleriana Hook.f.) showing downy mildew symptoms were collected from a greenhouse in Kecskemét, disease was later reported from different parts of the country from a number of different cultivars.
The upper surface of affected leaves turned yellow and white fungal-like growth was observed on the underside.