2 edition of Studies on virus diseases of papaya (Carica papaya) in Puerto Rico... found in the catalog.
Studies on virus diseases of papaya (Carica papaya) in Puerto Rico...
by P.R. University of Puerto Rico, Agricultural Experiment Station in Rio Piedras
Written in English
|Statement||by José Adsuar.|
|LC Classifications||S181 .E764 no. 1, etc.|
|The Physical Object|
|LC Control Number||46027556|
Papaya ringspot virus (PRSV) is a pathogenic plant virus in the genus Potyvirus and the virus family Potyviridae which primarily infects the papaya tree. Papaya ringspot virus Symptoms of PRSV on Papaya tree (a) and fruit (b)Family: Potyviridae. In , the release and cultivation of the genetically modified papaya cultivar ‘Huanong No.1’ successfully controlled the destructive papaya ringspot disease caused by Papaya ringspot virus Cited by: 1.
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The disease has been associated with waterlogged soil and poor soil drainage. Damping-Off (fungus – Rhizoctonia solani): This is a disease of young seedlings. Lesions are seen on the stem at or just above soil level. The stem becomes watery and shrinks, followed by death of the plant. Papaya is cultivated in Sri Lanka primarily as a home garden crop. However, there is limited extent under commercial scale and this extent is steadily increasing but there is no significant increase in production. The reasons for these reductions may be due to some districts which are infected with virus .
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Investigations in Porto Rico, reported in the first of these papers, have shown that papaya is affected there by three diseases, all thought to be caused by viruses.
These are bunchy-top [cf. R.A.E., A 28 ], which is the commonest, dieback, which is less common, and mosaic, which replaces these in a small area on the south coast.
The mosaic disease is characterized by mottling and extreme Cited by: 2. Diseases of papaya. This chapter reviews the distribution, importance and control of diseases of papaya (Carica papaya) together with characteristics, distribution and production of the fruit.
Cultivated papaya is susceptible to a wide range of diseases, including bacterial canker (Erwinia species), papaya bunchy top (probably caused by a bacterium in the genus Rickettsia), alternaria fruit spot (Alternaria Studies on virus diseases of papaya book, anthracnose (Glomerella cingulata.
Other viral diseases of papaya are Papaya meleira virus (PMeV), Papaya mosaic virus (PapMV), Papaya lethal yellowing virus (PLYV) and several other viruses are known to infect papaya, but may not be of economical significance.
Management of viral diseases in papaya is very crucial to accomplish a good harvest, and of all the management Cited by: 6. The author reviews the world literature on diseases of papaya (Carica papaya) attributed to viruses [see also next abstract] and discusses the confusion that has arisen from the use of common names derived mainly from the external symptoms produced.
These symptoms and the mode of transmission of the causal agents are also discussed. He presents a table in which the physical properties and modes Cited by: 8. from book Plant Viruses: Current Knowledge of Viruses Infecting Papaya and Their Transgenic Management.
() Studies on virus disease of papaya (Carica papaya) in Puerto Rico, I. Its latex contains enzymes that are used in the food, cosmetics, leather, and pharmaceutical industries. It is capable of growing in all soil types, provided the drainage is good. Studies have demonstrated that the seeds of Carica papaya have antifertility, anti-implantation, and abortifacient properties in females.
Papaya, Carica papaya, is an herbaceous perennial in the family Caricaceae grown for its edible papaya plant is tree-like,usually unbranched and has hollow stems and petioles. The leaves are palmately lobed, spirally arranged and clustered at the growing tip of the trunk. Papaya ringspot virus (PRV) was effectively eradicated by the early removal of three infected trees early in the study despite an established reservoir of virus about 2 km up slope of the trial.
Impacts Information derived from this project was used by the industry to relocate over acres of papaya from the PRV-ravaged Puna district to the. This article is a list of diseases of papaya (Carica papaya Bacterial diseases. Bacterial diseases; Bacterial canker Erwinia sp. Bacterial leaf spot Pseudomonas caricapapayae Tomato spotted wilt virus: Sticky disease ('meleira') Papaya meleira virus complex Terminal necrosis and wilt Tobacco ringspot virus: References.
What Type of Scientist Studies Viruses?. Viruses are among the smallest life forms, but according to the Encyclopedia of Life they are more numerous than any other organism. A scientist that studies viruses is called a virologist. Virology is roughly divided into Missing: papaya.
A Brief Study on Carica Papaya- A Review. 2 nd Edn, International Book Distributor s, Dehra Dun, Antioxidants as suggested from various studies may reduce the risk of such diseases.
The Author: Navneet Kumar Verma. Formerly 02G (8/05). Documents SCA with U of HI Manoa. The goal of this project is to develop and integrate commercial-scale production of strategies for management of Papaya Ringspot Virus and other papaya diseases.
Surveys of papaya fields on the Big Island showed that white peach scale (WPS) infestation was widespread. Papaya (Carica papaya) exhibiting symptoms caused by Papaya lethal yellowing virus (PLYV) Papaya (Carica papaya) is an important tropical fruit crop and production is increasing every year in Northeastern Brazil.
Papaya lethal yellowing is a disease caused by Papaya lethal yellowing virus (PLYV) that occurs only in Northeastern Brazil. The symptoms are characterized by progressive leaf yellowing and. In the absence of an effective antiviral drug to treat the disease, various treatments are being investigated.
Studies have indicated that the juice of the leaves of the Carica papaya plant from the family Caricaceae could help to increase the platelet levels in these patients. This review describes some of the published studies on this topic.
The papaya disease starts with the leaves and stems, then progresses until the papaya plant dies. The virus disappears once a gardener destroys and removes the papaya plant, according to experts.
Another papaya-related virus, ringspot, occurs from lack of plant care. Key symptoms include yellowing of the leaves, followed by dark-green streaks. The Hawaii papaya industry began suffering severe economic losses due to the impact of the devastating papaya ringspot virus on the island of Oahu as early as the s.
Papaya production then moved to the Puna area of the Big Island in the s, but, bythe virus had almost destroyed the papaya. Papaya meleira virus (PMeV) is the causal agent of papaya sticky disease, which is characterized by a spontaneous exudation of fluid and aqueous latex from the papaya fruit and leaves.
The latex oxidizes after atmospheric exposure, resulting in a sticky feature on the fruit from which the name of the disease originates. PMeV is an isometric virus particle with a double-stranded RNA (dsRNA Cited by: Papaya crops are currently beset by disease problems especially those caused by the papaya ringspot virus (PRSV) [6, 7].
Symptoms of PRSV manifest as a prominent mosaic pattern on the leaf lamina, wet-oily streaks on the petioles and upper part of Cited by: • The Philippines exports papaya to countries in Asia, Australia, Middle East, and the United States.
What hampers papaya production in the Philippines. One important problem is the papaya ringspot virus (PRSV) disease. Ina PRSV disease outbreak in Silang, Cavite severely affected the papaya industry in Southern Tagalog.
The virus, which. This video teach people "how to take care a papaya plant" It help to know 4 major disease of papaya plant attack y mildew ringspot virus/mosick virus g off i. A new papaya disease, yellow strap leaf, similar to YSL of chrysanthemums, appeared in Florida during the summer in and Black spot, resulting from infection by Cercospora papayae, has plagued Hawaiian growers since the winter of It causes defoliation, reduces yield, blemishes the fruit, and is unaffected by the hot-water dip.Diseases are the most important limit-ing production problems of papaya.
Although the plant is classified botanically as a peren-nial, virus diseases have reduced the effective crop life to years. This fact sheet describes the symptoms of several important Florida papaya diseases and recommendations for control.
Since fewFile Size: KB.Studies on Natural Transmission of Papaya ringspot virus disease in Eastern Uttar Pradesh.