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Table 2 Total number of trees and number of flowering trees and flower clusters, the annual mean fire blight infection score of the progeny and parents of an ‘Idared’ × Malus×robusta5 (Mr5) population inoculated withErwinia amylovorastrain Ea222_JKI in the period 2011–2017 in Germany. For the progeny, the percentage of progeny rated Class 0 (i.e. no infection) is presented for each year

From:映射的火疫病resistance inMalus×robusta5 flowers following artificial inoculation

Yeara Progeny Parents
# flower clusters inoculated Mean scoreb ‘Idared’ Mr5c
# # trees flowering % Class 0 # trees # flower clusters inoculated Mean scoreb # trees # flower clusters inoculated Mean scoreb
Total Mapping population
2011 239 188 91 1573 1.86a 34.0 0 1 3 0
2012 233 228 111 3367 0.95c 35.1 0 1 20 0
2013 173 154 65 2722 0.47e 37.0 0 1 35 0
2015 150 148 126 2546 0.75d 29.1 10 112 2.01c 5 58 0.28a
2016 150 59 46 325 1.11bc 61.0 9 69 3.71a 8 69 0.10ab
2017 150 146 125 1982 1.37b 26.0 10 100 2.81b 9 112 0.08b
  1. aProgenies from trial 2011–2013 were grafted on ‘M9’ and progenies from trial 2015–2017 were grafted on ‘B9’
  2. bDifferent letters indicate significantly different means at α = 0.05
  3. cData from 2011 to 2013 were not included in analysis
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BMC Plant Biology

ISSN: 1471-2229

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