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Symptoms of piper yellow mottle virus in black pepper as influenced by temperature and relative humidity

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Title Symptoms of piper yellow mottle virus in black pepper as influenced by temperature and relative humidity
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Creator V. Ahamedemujtaba
P.V.Atheena
A. I. Bhat
K.S. Krishnamurthy
V. Srinivasan
 
Subject Biochemical assays · Real-time reverse transcription-polymerase chain reaction · Standard mete-orological week (SMW) · Virus titre
 
Description Not Available
Masking of symptoms in winter and their re-appearance in black pepper (Piper nigrum L.) infect-ed with piper yellow mottle virus (PYMoV) in summer is common, especially on new flushes that appear after pre-monsoon showers. Plants of nineteen cultivars of black pepper infected with PYMoV but without any visible symptoms were grown in a polyhouse under natural conditions and in a greenhouse under controlled conditions from January 2019 to January 2020. The number of plants expressing symptoms in the polyhouse increased gradually from 1% during the 3rd standard meteorological week (SMW) (16 January) to 41% during the 21st SMW (22 May), when the afternoon temperature was 30–40 °C and relative humidity (RH) was 75%–93%, but began declining thereafter until the 53rd SMW (1 January), when the afternoon temperature was 30–36 °C and RH was 65%–86%. The proportion of plants expressing symptoms varied with the culti-var. However, in the greenhouse, in which temperature and RH were maintained at approximate-ly 26 °C and 80%, respectively, not more than 2% of the plants expressed symptoms. The number of symptomatic plants was positively correlated to maximum temperature (T Max) and maximum relative humidity (RH Max) in the afternoon. Based on this observation, a model for predicting the percentage of symptomatic plants was developed using stepwise regression analysis. Plants at the two sites did not differ significantly in the concentration of virus (virus titre) but differed significantly in the content of total carbohydrates, lipid peroxidase, and phenols.
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Date 2021-07-28T05:17:00Z
2021-07-28T05:17:00Z
2021-04-12
 
Type Research Paper
 
Identifier Ahamedemujtaba, V., Atheena, P.V., Bhat, A.I., Krishnamurthy, K.S. and Srinivasan, V. 2021. Symptoms of piper yellow mottle virus in black pepper as influenced by temperature and relative humidity. Virus Disease. https://doi.org/10.1007/s13337-021-00686-3
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http://krishi.icar.gov.in/jspui/handle/123456789/50418
 
Language English
 
Relation Not Available;
 
Publisher Springer