SOUR AND SWEET CHERRY (CERASUS MILL.): RESISTANCE OF COLLECTION ACCESSIONS TO LEAF SPOT AND BLOSSOM BLIGHT IN THE NORTHWEST OF RUSSIA

2019 ◽  
Author(s):  
S.Yu. Orlova ◽  
◽  
A.A. Yushev ◽  
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Northwest Of Russia

scholarly journals Genetic diversity of Pseudomonas syringae pv. syringae isolated from sweet cherry in southern and northern regions in Serbia

Genetika ◽  
2021 ◽  
Vol 53 (1) ◽  
pp. 247-262
Author(s):  
Renata Ilicic ◽  
Tatjana Popovic ◽  
Sanja Markovic ◽  
Aleksandra Jelusic ◽  
Ferenc Bagi ◽  
...  
Keyword(s):  
Pseudomonas Syringae ◽  
Leaf Spot ◽  
Sweet Cherry ◽  
Sour Cherry ◽  
Housekeeping Genes ◽  
Northern Region ◽  
Bacterial Canker ◽  
Fluorescent Pseudomonas ◽  
Planting Material ◽  
Northern Regions

Bacterial canker and leaf spot caused by plant pathogenic bacterium Pseudomonas is among the most destructive cherry diseases worldwide. Nowadays in Serbia, sweet cherry production significantly increased and the new plantations, mainly grown from imported planting material are being raised every year. During spring, 2018 and 2019, occurrence of bacterial canker and leaf spot symptoms was observed on a newly planted sweet cherry plantations in two localities, Zitoradja (Southern region) and Karavukovo (Northern region-Vojvodina). Typical P. syringae colonies were isolated on Nutrient Sucrose Agar supplemented with 5% sucrose (NSA). A total of fifteen isolates were selected and identified. Results of the LOPAT test (+---+) determined them to belong to fluorescent Pseudomonas Group Ia, while results of G+A+T-Ta- tests indicate presence of Pseudomonas syringae pv. syringae. Pathogenicity was confirmed on immature sweet and sour cherry fruitlets by forming of black, sunken lesions for all tested isolates. Genes syrB and syrD were successfully detected in all tested isolates. DNA sequencing using gapA, gltA, gyrB and rpoD housekeeping genes determined tested isolates to belong to P. s. pv. syringae using the National Center for Biotechnology Information (NCBI) nucleotide BLAST. The Serbian isolates shared 99.47% to 100% (Zitoradja) and 99.38% to 100% (Karavukovo) identity with bacterium P. s. pv. syringae. Phylogenetic analysis grouped isolates from Zitoradja in one tree cluster, separate from the Karavukovo isolates, indicating presence of two genetically diverse groups of causal pathogen P. s. pv. syringae, obtained from two geographically distinct localities in Serbia. Phylogeographic analysis grouped isolates from Zitoradja in multilocus haplotype coded as REz and isolates originated from Karavukovo in multilocus haplotype coded as REk. Considering that during last few years P. syringae continuously occurs mainly in young sweet cherry plantations, where imported material is used for raising, health status check is recommended to be included as obligatory measure when nursery material is used from import.

Aetiology of peach and sweet cherry leaf spot and twig canker in Montenegro

2021 ◽  
pp. 319-326
Author(s):  
T. Popović ◽  
J. Menković ◽  
A. Prokić ◽  
A. Obradović
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Cherry Leaf Spot

scholarly journals Cherry leaf spot incidence on 12 sweet cherry cultivars in integrated production

2013 ◽  
Vol 19 (1-2) ◽  
Author(s):  
A. Vámos ◽  
I. J. Holb
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Disease Incidence ◽  
Integrated Production ◽  
Cherry Leaf Spot ◽  
Sweet Cherry Cultivars

The aim of this study was to evaluate the cherry leaf spot (CLS) incidence on 12 sweet cherry cultivars in integrated sweet cherry production in three consecutive years from 2010 till 2012. Assessed cultivars (cvs.) were ’Aida’, ’Axel’, ’Biggareau burlat’, ’Blaze Star’, ’Celeste’, ’Germersdorfi 3’, ’Izabella’, ’Katalin’, ’Krupnoplodnaja’, ’Linda’, ’Sunburst’, ’Vera’Results showed that year had an essential effect on the CLS disease incidence. Cultivars showed great differences within years. Cultivar ’Celeste’ showed the lowest disease incidence on leaves in all years lower than 10%. The largest disease incidence on leaves was on cv. ’Sunburst’ in 2010, on cv. ’Germersdorfi 3’in 2011 and on cv. ’Axel’ in 2012. Disease incidence on these cultivars ranged between 10 and 25%.

scholarly journals Disease threshold for cherry leaf spot incidence on commercial sweet cherry cultivars

2019 ◽  
Vol 25 (1-2) ◽  
Author(s):  
M. Varga ◽  
A. Vámos ◽  
B. Molnár ◽  
I. J. Holb
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Disease Incidence ◽  
Threshold Level ◽  
Training System ◽  
Training Systems ◽  
Cherry Leaf Spot ◽  
Leaf Infection ◽  
Disease Threshold ◽  
Sweet Cherry Cultivars

The aim of this study was to demonstrate the 10% threshold level for cherry leaf spot incidence on 23 commercial sweet cherry cultivars in two training systems. Twenty three cherry cultivars were evaluated in the two training systems with a spacing of 4 x 1 m and with a spacing of 2 x 5 m. Results showed that leaves of many cultivars were heavily infected, e.g. cultivars (cvs) ’Biggareau Burlat’, ’Sunburst’, while others showed low disease incidence e.g. cvs ’Celeste’ and ’Blaze Star’. According to the 10 % threshold level, cv ’Celeste’ proved to be the most resistant cultivar to leaf infection, while cv ’Münchebergi korai’ exceeded extremely the 10% threshold level. Leaf spot incidence was affected by training system on most cultivars. Thirteen cultivars had less than 10% infection in the 4 x 1 m spacing (i.e. they did not reach the 10% disease threshold level). At the same time, only 3 cultivars showed less than 10% infection in the 5 x 2 m spacing.

scholarly journals Some biological properties of new sweet cherry cultivars in Bulgaria and their susceptibility to Blumeriella jaapii

2007 ◽  
Vol 13 (3) ◽  
Author(s):  
M. Borovinova ◽  
N. Christov ◽  
J. Nyéki
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Biological Properties ◽  
Late Spring ◽  
Spring Frost ◽  
Blumeriella Jaapii ◽  
Cherry Leaf Spot ◽  
Late Spring Frost ◽  
Sweet Cherry Cultivars ◽  
Fruit Mass

Investigations were made on 12 sweet cherry cultivars (‘13-S-22-8’, 'Sunburst', `Kozerska'., 'NY 13791', 'Royalton', 'NY 13688', 'Hartland', `Sumerset', 'Pollax', 'Patriotka Krima', 'Castor', and `Lapins') in an experimental orchard of cherry cultivar collection in the Institute of Agriculture at Kyustendil, Bulgaria during the period of 1997-2003. The trees were planted in 1996. All cultivars were grafted on Prunus mahaleb. Four biological properties of the cultivars were assessed such as blooming time, resistance to late spring frost, fruit ripening and fruit mass. Among cultivars, a good resistance to late spring frost was observed on cultivar 'Sunburst'. The fruit mass varied between 4.2 g (cv. 'Patriotka Krima') and 8.5 g (cv. `Sunburst'). The susceptibility of the cherry cultivars to cherry leaf spot caused by Blumeriella jaapii was assessed in mid-September in each year. The estimation of the rate of attack was made according to the grade of Townsend and Neuberger. All cultivars showed symptoms of cherry leaf spot but the degree of susceptibility was different. Cultivar `Patriotka Krima' was the least susceptible, while cultivar `Somerset' was the most susceptible to Blumeriella jaapii.

scholarly journals RESOURCES FOR IMPROVING THE ASSORTMENT OF SWEET CHERRY VARIETIES IN BELARUS

2021 ◽  
Vol 37 (37) ◽  
pp. 50-54
Author(s):  
Ilya Palubiatka ◽  
◽  
Aliaksandar Taranau ◽  
Zoya Kazlouskaya ◽  
◽  
...  
Keyword(s):  
Fruit Ripening ◽  
Leaf Spot ◽  
Sweet Cherry ◽  
Winter Hardiness ◽  
Biological Traits ◽  
Cherry Leaf Spot ◽  
Fruit Growing

The sweet cherry genetic collection of RUE "Institute of Fruit Growing" is including 273 accessions, which have been studied for the main economic and biological traits. The main features for selection are large-fruited combined with winter hardiness and resistance to cherry leaf spot. After an evaluation of the collection, three large-fruited accessions with tough pulp of the fruit were selected. The Ukrainian early fruit ripening variety ‘Annushka’ was selected among the introduced cherry varieties. This variety has large fruits of excellent taste and is characterized by high winter hardiness. Two Belarusian promising selections ‘84-10/98’ (‘Narodnaya’ o.p.) and ‘94-30/41’ (‘Vityaz’ × ‘Aelita’) were selected on these grounds. Selection ‘84-10/98’ has a medium and ‘94-30/41’ has late fruit ripening terms.

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