Author: N. IoannouPublisher:
ISBN:
Category : Sweetpotato whitefly
Languages : en
Pages : 8
Book Description
Epidemiology of Tomato Yellow Leaf Curl Virus in Relation to the Population Density of Its Whitefly Vector. Bemisia Tabaci (gennadius)
Author: N. IoannouPublisher:
ISBN:
Category : Sweetpotato whitefly
Languages : en
Pages : 8
Book Description
Epidemiology of Tomato Yellow Leaf Curl Virus in Relation to the Population Density of Its Whitefly Vector, Bemsia Tabaci (Gennadius)
Author: Tomato Yellow Leaf Curl Virus Disease
Author: Henryk CzosnekPublisher: Springer Science & Business Media
ISBN: 140204769X
Category : Science
Languages : en
Pages : 437
Book Description
Ideally suited to horticulturalists and plant virologists, this highly useful text offers a multidisciplinary view on one of the major diseases of tomato crops, the tomato yellow leaf curl disease. It deals with epidemiological aspects of the disease as well as integrated pest management in the field. Coverage discusses the efforts aimed at breeding tomato plants resistant to the virus by classical breeding, by marker-assisted breeding and by genetic engineering.
Bemisia Tabaci (Gennadius)
Author: A.N. BasuPublisher: CRC Press
ISBN: 042972358X
Category : Science
Languages : en
Pages : 186
Book Description
This monograph provides information on the basic and applied research on the morphology, taxonomy, biology, ecology and behaviour of the whitefly, Bemisia tabaci (Gennadius). It is devoted to the epidemiology of the diseases transmitted by the whitefly and the approaches to control.
The Distribution Of, Relationship Between, and Factors Influencing the Abundance of Bemisia Tabaci and the Incidence of Tomato Yellow Leaf Curl Virus in Southern Florida Tomato
Author: James Edwin TaylorPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
ABSTRACT: Biotype B of the sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), also known as the silverleaf whitefly, B. argentifolii Bellows and Perring, is a serious pest of many agricultural crops around the world. In Florida, B. tabaci has become a limiting pest species in tomato due to its ability to vector Tomato yellow leaf curl virus (TYLCV) (family Geminiviridae, genus Begomovirus). TYLCV is vectored in a persistent circulative manner and symptoms of infection in tomato include upward curling of leaflet margins, reduction of leaflet area, yellowing of young leaves, abscission of flowers, and stunting of plants.
Epidemiology of Tomato Yellow Leaf Curl Virus in the Dominican Republic and Genetic Analysis of Genes Involved in Virus Movement
Author: Raquel SalatiChemical Control of the Whitefly Bemisia Tabaci (Gennadius), and Its Effect on Tomato Yellow Leaf Curl Virus
Author: N. IordanouTechnical Bulletin - Agricultural Research Institute
Author: Interactions of Whitefly Bemisia Tabaci with a Begomovirus and Its Host Plant, Solanum Lycopersicum
Author: Wendy Gay MarchantPublisher:
ISBN:
Category :
Languages : en
Pages : 408
Book Description
Tomato yellow leaf curl virus (TYLCV) is a Begomovirus that causes severe symptoms in tomatoes such as curling of the leaves, chlorosis, stunted growth, and yield losses. The vector is Bemisia tabaci, which transmits the virus in a persistant and circulative manner. TYLCV arrived in Florida in the mid 1990's and has spread northward into Georgia, South Carolina, and Alabama. TYLCV's overwintering mechanism is currently unknown, so transovarial and sexual transmission in the whitefly were tested for using PCR and plant transmission experiments, as these modes of transmission could indicate TYLCV overwinters in the whitefly. Transovarial and sexual transmission of TYLCV was found, but the insects were not infectious to plants. TYLCV-resistant tomato cultivars are currently the best method to control for yield losses due to the virus. However, in other pathosystems, viruses have broken resistance in their respective crops. TYLCV genomes isolated from resistant and susceptible cultivars were compared to investigate for this threat. There were not any apparent differences between the genomes, indicating that TYLCV-resistant tomatoes can continue to be of use. Also, many studies have examined the phylogeny and introductions of TYLCV into new geographic regions, but a population genetics approach on a world-wide scale has not been conducted. Hundreds of TYLCV genomes available on GenBank, and from Florida and Georgia, were amassed to test for recombination, polymorphisms, population neutrality, gene flow and genetic differentiation, selection, and phylogeny. The Middle East was confirmed to be the likely origin of TYLCV and showed the highest diversity. In general, the TYLCV species is highly variable and is spreading most rapidly in Southeast Asia. Mixed infections of different Begomovirus species have been reported in many different plants. However, few studies have examined mixed infections of different virus isolates from the same species. Mixed TYLCV infections were sought for in tomatoes from the field. A greenhouse experiment was conducted to assess the competitiveness of two different TYLCV isolates. Lastly, tomato genotypes with acylsugar-exuding trichomes were assessed for whitefly resistance. These genotypes showed xenobiosis and antibiosis toward the whitefly, but were still susceptible to TYLCV inoculation by whiteflies.
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