GROUNDNUT ROSETTE DISEASE PDF

Groundnut rosette disease (GRD), caused by a complex of three agents: groundnut rosette assistor luteovirus, groundnut rosette umbravirus. It depends on groundnut rosette assistor virus (GRAV; Luteoviridae) for encapsidation in GRAV coat protein and for transmission by Aphis craccivora in the. SUMMARY: Groundnut rosette disease is the most important disease of groundnuts of sub-. Saharan Africa. Epidemics occur without warning. It is caused by a.

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This plant was infected early and will not produce any yield. There is no control for the virus once a plant is infected but control of the gtoundnut will prevent further spread.

Created in Uganda August Groundnut rosette virus Virus classification Group: The sources of resistance identified in global germplasm need to be characterized based on DNA profile and using molecular markers. This will also be useful in establishing the allelic relationships. Breeding for multiple resistance rosette virus complex and the vector should receive high priority.

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Send feedback on this factsheet. Timely planting as soon as there is enough water in the soil. PDF Add to factsheet booklet.

It is transmitted between plants by insect vectors such as the groundnut aphid Aphis craccivora. ICRISAT scientists continued to develop high-yielding, long-duration groundnut varieties with resistance to rosette suitable to medium and high rainfall areas. A package of options has been developed and is being verified on-farm in three agroecologies in Malawi. Mechanisms of resistance operating against individual causal agents of the disease complex and the vector need to be understood.

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Groundnut rosette virus – Wikipedia

Spray whole plant with insecticides, dusease as dimethoate, 14 days after emergence usually 5mls per 2 litres of water but read the label for instructions and then at day intervals for a total of four sprays. Articles with ‘species’ microformats All articles with dead external links Articles with dead external links from March Articles with permanently dead external links.

In spite of several achievements made in the past, development of short-duration groundnut varieties with resistance to rosette remained as a challenge to ICRISAT for a long time.

Several of these varieties had excellent performance in farmer participatory on-farm verification in Malawi, Zambia, Mozambique, and Uganda.

Continuing to use www. In other projects Wikispecies. More recently it has been cultivated in other parts of the world and is an important subsistence crop in Sub-Saharan Africa. By using this site, you agree to the Terms of Use and Privacy Policy.

Retrieved from ” https: Sources of resistance to rosette were first discovered in Senegal in The disease is caused by a complex of three agents: Umbraviruses Viral plant pathogens and diseases Peanut diseases. The disease is endemic to sub-Saharan Africa and its off-shore islands, including Madagascar.

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High degree of resistance to rosette or its disesse was recently identified in wild Arachis species. For erect types Disesse plant one and a half feet between rows and half a foot between plants along the row.

Hence, there is a need to understand the factors that influence rosette disease outbreaks such as off-season survival of rosette viruses, the relative importance of primary and secondary spread, feeding behavior and transmission efficiency of vector, influence of climatic conditions on vector build-up and dispersal.

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Yellow Rosette Virus, no yield will come from the infected plant right. Groundnut rosette virus was first described in Africa eosette and causes serious damage to groundnut crops on that continent.

This page was last edited on 22 Marchat It is spread by aphids feeding on the crop. When using a pesticide, always wear protective clothing and follow the instructions on the product label, such as dosage, timing of application, and pre-harvest interval.