scholarly journals Novel metrics to classify fire blight resistance of 94 apple cultivars

2019 ◽  
Vol 68 (5) ◽  
pp. 985-996 ◽  
Author(s):  
S. A. Kostick ◽  
J. L. Norelli ◽  
K. M. Evans
Keyword(s):  
Fire Blight ◽  
Blight Resistance ◽  
Apple Cultivars

scholarly journals Historical apple cultivars that display high level of resistance to fire blight

2004 ◽  
Vol 10 (3) ◽  
pp. 19-23
Author(s):  
Kása K. ◽  
G. Tóth M. ◽  
Hevesi M.
Keyword(s):  
Disease Resistance ◽  
Fruit Quality ◽  
Fire Blight ◽  
Erwinia Amylovora ◽  
Morphological Characteristics ◽  
Blight Resistance ◽  
Multiple Resistance ◽  
New Varieties ◽  
Apple Cultivars ◽  
High Level

Following the first outbreak of fire blight caused by the bacterium Erwinia amylovora (Burrill) Winslow et al. in Hungary, we have started research with the aim to screen domestic gene sources, mostly historical Hungarian apple cultivars, for disease resistance as part of an apple breeding program for multiple resistance. The present study was conducted with the aim to choose the most tolerant historical apple cultivars among 25 selected cultivars by screening their behavior towards fire blight under controlled conditions. Six cultivars were shown to be the most disease tolerant: `Batul', 'London pepin', Nemes Sóvári Alma', `Sikulai', `Szemes alma', Wilmos renet'. We evaluated these cultivars by investigating both morphological- characteristics under original environmental circumstances and fruit quality. The cultivars had a remarkable degree of fire blight resistance compared to the control cultivars. These were not competitive with the commercially grown 'Jonathan M40' during cultivar tests but on the basis of certain characteristics they could serve as genetic sources for breeding new varieties.

TRANSFORMATION OF APPLE CULTIVARS WITH T4-LYSOZYME-GENE TO INCREASE FIRE BLIGHT RESISTANCE

1999 ◽  
pp. 253-256 ◽  
Author(s):  
V. Hanke ◽  
K. Düring ◽  
John L. Norelli ◽  
Herb S. Aldwinckle
Keyword(s):  
Fire Blight ◽  
Blight Resistance ◽  
T4 Lysozyme ◽  
Lysozyme Gene ◽  
Apple Cultivars

scholarly journals Testing of Czech cultivars and advanced selections of apples for fire blight (Erwinia amylovora) resistance

2011 ◽  
Vol 31 (No. 1) ◽  
pp. 7-11
Author(s):  
C. Fischer ◽  
K. Richter ◽  
J. Blažek
Keyword(s):  
Fire Blight ◽  
Erwinia Amylovora ◽  
Scab Resistance ◽  
Blight Resistance ◽  
The Czech Republic ◽  
Malus Floribunda ◽  
Apple Cultivars ◽  
High Level ◽  
Very High ◽  
Different Levels

Five apple cultivars from the Czech Republic and 26 selections from the same country (a majority of them were resistant to scab) were included in the present study. M. robusta strain (Nr. 5) was used as a control with the highest level of resistance to fire blight. Another 7 cultivars with different levels of resistance or susceptibility to the disease were also evaluated. Selena and Nabella were found to be resistant, whereas Angold, Resista and Topaz were susceptible. Two HL selections were previously identified as highly resistant, 3 selections as medium resistant and 7 others as moderately susceptible. The rest of the 14 selections ranged from very high susceptible to medium susceptible. A high level of resistance was confirmed in 3 cultivars from Dresden-Pillnitz: Reanda, Remo and Rewena. Comparison of the parentage of the tested cultivars or selections with their level of resistance to fire blight suggests that most of the resistance comes from Malus floribunda, which was used in the course of their breeding as a donor of scab resistance. In one case, the source of the fire blight resistance was Starking Delicious cv.  

EVALUATION OF FIRE BLIGHT RESISTANCE OF APPLE CULTIVARS AND BREEDING NEW RESISTANT CULTIVARS

1984 ◽  
pp. 259-260 ◽  
Author(s):  
H.S. Aldwinckle ◽  
J.L. Norelli ◽  
S.J. Schwager ◽  
R.C. Lamb
Keyword(s):  
Fire Blight ◽  
Blight Resistance ◽  
Resistant Cultivars ◽  
Apple Cultivars

scholarly journals Historical apple cultivars that display high level of resistance to fire blight

2004 ◽  
Vol 10 (3) ◽  
pp. 19-23
Author(s):  
K. Kása ◽  
M. G. Tóth ◽  
M. Hevesi
Keyword(s):  
Disease Resistance ◽  
Fruit Quality ◽  
Fire Blight ◽  
Erwinia Amylovora ◽  
Morphological Characteristics ◽  
Blight Resistance ◽  
Multiple Resistance ◽  
New Varieties ◽  
Apple Cultivars ◽  
High Level

Following the first outbreak of fire blight caused by the bacterium Erwinia amylovora (Burrill) Winslow et al. in Hungary, we have started research with the aim to screen domestic gene sources, mostly historical Hungarian apple cultivars, for disease resistance as part of an apple breeding program for multiple resistance. The present study was conducted with the aim to choose the most tolerant historical apple cultivars among 25 selected cultivars by screening their behavior towards fire blight under controlled conditions. Six cultivars were shown to be the most disease tolerant: `Batul', 'London pepin', Nemes Sóvári Alma', `Sikulai', `Szemes alma', Wilmos renet'. We evaluated these cultivars by investigating both morphological- characteristics under original environmental circumstances and fruit quality. The cultivars had a remarkable degree of fire blight resistance compared to the control cultivars. These were not competitive with the commercially grown 'Jonathan M40' during cultivar tests but on the basis of certain characteristics they could serve as genetic sources for breeding new varieties.

Comparison of fire blight resistance screening protocols in two international breeding programmes

2015 ◽  
Vol 68 ◽  
pp. 275-281
Author(s):  
M.B. Horner ◽  
K. Richter ◽  
A. Peil ◽  
V.G.M. Bus
Keyword(s):  
New Zealand ◽  
Fire Blight ◽  
Research Programme ◽  
Blight Resistance ◽  
Growth Media ◽  
Screening Methods ◽  
Resistance Screening ◽  
Breeding Programmes ◽  
Apple Cultivars ◽  
Resistance Expression

Experiments were carried out to compare fire blight resistance screening methodologies used in the German and New Zealand pipfruit breeding programmes The small differences between the respective screening methodologies did not result in significant differences in the incidence of fire blight infection or the amount of resistance observed in plants Differences in bacterial growth media inoculum suspension and inoculation technique did not have a significant effect on the incidence of fire blight infection or the extent of resistance expression in various apple cultivars Some of the Erwinia amylovora isolates had a significant effect on the level of disease expression on different cultivars These differences can be used as tools to identify resistance quantitative trait loci in different cultivars Results from these experiments have led to standardisation of screening methods between the two countries and provided confidence in comparing the findings of the New Zealand/German collaborative resistance research programme

scholarly journals Evaluation of pear (Pyrus communis L.) hybrid combinations for the transmission of fire blight resistance and fruit characteristics

2018 ◽  
Vol 54 (No. 2) ◽  
pp. 78-85 ◽  
Author(s):  
Y. Evrenosoğlu ◽  
K. Mertoğlu
Keyword(s):  
Fire Blight ◽  
Animal Health ◽  
Blight Resistance ◽  
Fruit Characteristics ◽  
Breeding Programs ◽  
Pyrus Communis L ◽  
Management Method ◽  
Resistant Rootstock ◽  
Santa Maria ◽  
Harmful Effects

Fire blight is one of the most destructive diseases of pome fruits, especially pears. In current conditions when the demand for organic products is increasing, improvement of resistant rootstock and varieties is becoming important due to the lack of an effective disease management method against fire blight caused by Erwinia amy-lovora as well as the harmful effects of chemicals on environment, human and animal health. The findings of the researchers as to which variety performs well in terms of the transmission of fire blight resistance are quite important for new breeding programs. In the study, three varieties with high commercial value (Magness, Santa Maria and Williams) were identified as the maternal parents and 21 hybridization combinations were made with seven varieties (Akça, Ankara, Conference, Güz, Kaiser Alexandre, Kieffer and Taş) as pollinators. The Magness maternal parent was found superior when compared with the other maternal parents for the variety susceptibility level to fire blight. Apart from the differences in the susceptibility level of 21 different combinations of hybrids to fire blight, the commercially superior ten hybrids (I-15-24, II-13-1, II-13-19, II-13-34, II-13-73, II-27-21, II-27-55, II -32-44, III-22-638, III-27-590) have been determined via the weighted ranking method from the parameters of disease resistance and different fruit characteristics measuring the commercial preference of the fruits such as fruit quality, attractiveness, size, firmness and rustiness

Sign in / Sign up

Export Citation Format

Share Document