Manejo de epifitias del Virus de la mancha anular de la papaya utilizando barreras de Zea mays L. en Carica papaya L. . Cabrera, D., Universidad Central. del virus de la mancha anillada del papayo (PRSV) que infecta Carica papaya L. en El virus de la mancha anular de la papaya (Papaya Ringspot Potyvirus. Epiphyte management of Papaya ringspot virus using Zea mays L. barriers in Carica papaya L. Rev. Protección Veg. [online]. , vol, n.2, pp.
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Papaya ringspot virus – Wikipedia
lx High incidence of seed transmission of Papaya ringspot virus and Watermelon mosaic virustwo viruses newly identified in Robinia pseudoacacia.
Papaya ringspot virus EoL: Views Read Edit View history. Viral diseases represent a major phytosanitary problem, especially those transmitted by insect vectors, ,a as the Papaya ringspot virus PRSV Potyviridae, Potyviruswhich are considered the most economically important viral disease affecting papaya due to its geographical distribution in almost all papaya producing regions as well as its high virulence and high yield losses Cabrera, So far in Hawaii, there has been no breakdown of the coat protein resistance encoded in transgenic strains of papaya.
Phylogenetic analysis The differences in the nucleotide similarity between the PRSV isolates from each location in Norte de Santander are reflected in the phylogenetic tree that groups the isolates into two different clades Fig. Once symptoms have anulaar observed, it is already too late to spray for aphids — the disease has most likely already been transmitted to nearby healthy plants.
These are the first results about ringspot susceptibility for these accessions, which are highly useful for farmers, as well as for breeding programs in the country. Two plants were selected for each mancua, and the following measurements were made: Materials and methods Field sampling. La papaya Carica papaya L. Papaya Carica papaya L.
Phylogeography and molecular epidemiology of Papaya ringspot virus. The presence of recombinations in PRSV provides an understanding of its molecular evolution and help in the study of the characteristics pqpaya as the specificity of the host, geographical distribution and emergence as new epidemics Mangrauthia et al.
Studies on the molecular evolution of viruses are essential for understanding their biological characteristics, changes in virulence, geographical ranges and their emergence as new epidemics.
Characteristics, pathogenicity, sequence variability and control”. At the same time, isolates from Colombia and Venezuela have a greater relationship with isolates from Cuba and Mexico. Inter- and intralineage recombinants are common in natural populations of Turnip mosaic virus.
Cultivos Tropicales, La Habana, v.
On the evolution and molecular epidemiology of the potyvirus papaya ring-spot virus. Symptoms are typical of viral diseases. Genetic variation of papaya ringspot virus in Venezuela. The size of the fruit can weigh between g and 10 kg. Anilar of Plant Pathology, Wallinford, v.
Papaya ringspot virus
The highest number of plants with grade 1 of the disease were present when treatments were applied preventively or healingly. It is cultivated in land rich with organic matter and abundant moisture. All the contents of this journal, except where otherwise noted, is licensed under anupar Creative Commons Attribution License.
How to cite this article. These similarity values between isolates from separate regions are consistent with the genetic variability found in other countries for PRSV Chin et al.
These results are interesting because they were obtained under field conditions with a new virus inhibitor formulated against the potyvirus PRSV in papaya, representing an important step forward in the improvement of the control management of this disease.
Papaya ringspot virus -P: This type infects papaya and several members of kancha melon family Anula.
Medium-term prospects for agricultural commodities: Treatments II and IV and preventive controls, were applied every 15 d, among the first and fourth mo of transplantation. The low proportion of nucleotide substitution between non-synonymous and synonymous sites indicates a selection for the conservation of the amino acid sequence, or negative selection Kryazhimskiy and Plotkin, It was also introduced directly from India to Australia and the Americas within the last years.
The isolates with greater divergence were the collected in Campo Hermoso, grouping into a different clade Fig.
The applications of both antiviral products were able to attenuate the severity produced by the PRSV up to d Figure 1. Papaya seedlings were planted in east to west double rows spaced at 3.
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