Spread of phytoplasma infection in the tomato field depending on the climatic conditions of the year
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ZAMORZAEVA, Irina; BAHŞIEV, Aighiuni; MIHNEA, Nadejda. Spread of phytoplasma infection in the tomato field depending on the climatic conditions of the year. In: Тенденции развития агрофизики: от актуальных проблем земледелия и растениеводства к технологиям будущего. Посвящено памяти академика Е.И. Ермакова. Ediția 2, 2-4 octombrie 2019, St. Petersburg. St. Petersburg, Russia: ФГБНУ АФИ, 2019, pp. 662-668. ISBN 978-5-905200-40-3.
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Тенденции развития агрофизики: от актуальных проблем земледелия и растениеводства к технологиям будущего
Ediția 2, 2019
Conferința "Тенденции развития агрофизики: от актуальных проблем земледелия и растениеводства к технологиям будущего"
St. Petersburg, Russia, 2-4 octombrie 2019

Spread of phytoplasma infection in the tomato field depending on the climatic conditions of the year


Pag. 662-668

Zamorzaeva Irina, Bahşiev Aighiuni, Mihnea Nadejda
 
Institute of Genetics, Physiology and Plant Protection
 
Disponibil în IBN: 16 februarie 2022


Rezumat

The main goal of this work was to determine the influence of meteorological conditions on the  spread of phytoplasma in the tomato field. Molecular diagnosis was carried out on plants of two  tomato varieties during three growing seasons: 2016, 2017, 2018. DNA for nested PCR analysis was  isolated from the peduncles of tomato using the alkaline express method. Probes (peduncles) for  analysis were collected in the middle of July, August and September.  It  was  established  that   the  distribution  of  phytoplasma  infection  was nonuniform in the two analyzed varieties across  the three seasons of vegetation. Climatic conditions of the summer of 2016 and 2018 were relatively  similar characterized by high temperatures,  especially  in  August.  The  summer  of  2017  was   cooler  and  wetter. Consequently,  the  percentage  of  infected  tomato  plants  was   significantly  lower,  only about 42%, at the end of the period of vegetation in 2017 versus 92% in  2016 and 70% in 2018. We can suggest that lower temperatures reduced the activity and reproduction  of insect vectors of phytoplasma. As a result, the percentage of infected plants in tomato field  did not essentially increase. The negative effect of precipitations on the spread of phytoplasma   was  not  established.  Nevertheless,  it  is  necessary  to  take  into  account combinations  of   different  climatic  factors  as  well  as  some  specific  characteristics  of tomato varieties  when estimating the risk of the infection spread.

Cuvinte-cheie
phytoplasma infection, tomato, molecular diagnosis, climatic conditions.  

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