scholarly journals Badania nad biologią patogena grusz, grzyba Venturia pirina Aderh. (Fusicladium pirinum Fuck.) [Studies on Perithecial and Conidial Stage of Pear Scab Fungus Venturia pirina Aderh. (Fusicladium pirinum Fuck.)]

2017 ◽  
Vol 6 (1) ◽  
pp. 59-116 ◽  
Author(s):  
Z. Borecki
Keyword(s):  
Pear Scab ◽  
Venturia Pirina ◽  
Conidial Stage

Proteogenomic Analysis of the Venturia pirina (Pear Scab Fungus) Secretome Reveals Potential Effectors

2014 ◽  
Vol 13 (8) ◽  
pp. 3635-3644 ◽  
Author(s):  
Ira R. Cooke ◽  
Dan Jones ◽  
Joanna K. Bowen ◽  
Cecilia Deng ◽  
Pierre Faou ◽  
...  
Keyword(s):  
Pear Scab ◽  
Venturia Pirina

scholarly journals Susceptibility of European pear cultivars to Venturia pirina Aderh. infection at a variety collection in Hungary

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
P. Benedek ◽  
T. Szabó ◽  
Z. Szabó ◽  
J. Nyéki
Keyword(s):  
Fruit Quality ◽  
Chemical Control ◽  
The Other ◽  
European Pear ◽  
Field Sensitivity ◽  
Pear Scab ◽  
Other Hand ◽  
Venturia Pirina ◽  
Leaf Infection ◽  
Yield Capacity

Field sensitivity of 271 European pear genotypes were evaluated in a large variety collection of pear in Hungary during a nine years survey. Substantial differences were detected in the rate of pear scab infection of leaves and fruits. Some 18 per cent of the inspected genotypes remained completely free of infection even in the years with weather favouring to the disease. On the other hand, 78 % of the inspected genotypes were infected in some or more extent. The rate of infection was generally higher on leaves than on fruits. 18.6 % of the genotypes inspected were tolerant to leaf infection and their majority (81.1 %) were tolerant to fruit infection. Some one fi fth of the genotypes (19.7 %) were highly susceptible to leaf infection but only minor rate of them (2.2 %) were highly susceptible to fruit infection. There were 44 genotypes that could be regarded as tolerant to pear scab leaf and fruit infection under fi eld conditions. Some of these genotypes may be suitable to commercial pear growing with highly reduced chemical control against pear but their yield capacity and fruit quality should be evaluated.

Environmental factors influencing maturation and release of ascospores of Venturia pirina in Victoria, Australia

2001 ◽  
Vol 52 (8) ◽  
pp. 825 ◽  
Author(s):  
O. N. Villalta ◽  
W. S. Washington ◽  
G. M. Rimmington ◽  
W. E. MacHardy
Keyword(s):  
Linear Equations ◽  
Management Program ◽  
Data Sets ◽  
Regression Equations ◽  
Degree Days ◽  
Night Time ◽  
Cumulative Percentage ◽  
Pear Scab ◽  
Linear Relationships ◽  
Venturia Pirina

The influence of moisture, light, and temperature on Venturia pirina ascospore maturation and discharge was studied during 1992–99 in 2 pear-growing regions in Victoria. In each year and site, mature ascospores were trapped over a 3-month period beginning a few days before or at the green-tip stage of pear tree development in early September and ending in late November, with the majority of ascospores ((>80%) trapped between green-tip and petal-fall. Ascospore discharge was associated with rain and dew, with 90–98% of the season’s total number of ascospores trapped during rain events and 2–10% trapped during dew events in the 12 data sets examined. Most ascospores were trapped (82.5– 99.9%) during daytime (0600–1800 hours). The 0.1–17.5% of ascospores detected during night time (1900–0500 hours) were trapped mainly within 1–3 h of dawn or dusk. There were linear relationships between the logit of cumulative percentage of ascospore maturation and temperature accumulation (above 0 degree-days), calculated both daily and for days with >= 0.2 mm of rainfall. Six linear regression equations were formulated with 10 years of field data and using the 2 methods of accumulating degree-days, to predict the cumulative percentage of matured ascospores. Predictions were compared with additional field and laboratory observations not used in the formulation of the linear equations. The importance of the temperature-based linear equations is discussed in relation to the prediction of pear scab ascospore maturity for use in a pear scab management program.

The Perennation and Control of Pear Scab (Venturia pirina Aderb.)

1974 ◽  
Vol 23 (2) ◽  
pp. 67-73 ◽  
Author(s):  
CYNTHIA J. WILLIAMSON ◽  
R. T. BURCHILL
Keyword(s):  
Pear Scab ◽  
Venturia Pirina ◽  
And Control

scholarly journals ‘Hanhong’ Pear

HortScience ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 397-416
Author(s):  
Maojun Zhang ◽  
Lihua Ding ◽  
Qiang Wang ◽  
Meiqi Feng ◽  
Shahrokh Khanizadeh
Keyword(s):  
Shelf Life ◽  
Black Spot ◽  
High Quality ◽  
Asian Pear ◽  
Pear Scab ◽  
Venturia Pirina

‘Hanhong’ (Pyrus ussuriensis Maxim × P. bretschneideri Rehd.) is a new high-quality Asian pear with excellent firmness and crispness and a long shelf life. Fruit of ‘Hanhong’ are very attractive and the tree is very winter-hardy. The fruit and leaves are resistant to pear scab (Venturia pirina Aderh) and black spot (Alternaria kikuchiana Tannka) disease.

Purification of polygalacturonases produced by the pear scab pathogens, Venturia nashicola and Venturia pirina

2000 ◽  
Vol 56 (6) ◽  
pp. 263-271 ◽  
Author(s):  
Atsunori Isshiki ◽  
Kazuya Akimitsu ◽  
Hideo Ishii ◽  
Hiroyuki Yamamoto
Keyword(s):  
Pear Scab ◽  
Venturia Nashicola ◽  
Venturia Pirina
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