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First report on the presence of fire blight resistance in linkage group 11 of Pyrus ussuriensis Maxim.
Journal of Applied Genetics ( IF 2.4 ) Pub Date : 2009 , DOI: 10.1007/bf03195660
K Bokszczanin 1 , L Dondini , A A Przybyla
Affiliation  

Fire blight, caused by the gram-negative bacteriumErwinia amylovora (Burrill) Winslow et al., is a dangerous disease of pome fruits, including pear. A pear breeding program for fire blight resistance was initiated in 2003 at the Department of Pomology, Warsaw University of Life Sciences, Poland. Since several Asian species are considered to be potential sources of resistance to fire blight, the susceptiblePyrus communis ‘Doyenne du Comice’ was crossed with the resistantP. ussuriensis. The F1 full-sib progeny composed of 155 seedlings was tested for susceptibility to fire blight by artificial shoot inoculation. A framework linkage map of both parents was constructed based on 48 AFLP and 32 SSR markers and covered a length of 595 cM and 680 cM in ‘Doyenne du Comice’ andP. ussuriensis, respectively. For the first time a putative QTL for fire blight resistance inP. ussuriensis linkage group 11 was identified. Another putative QTL in linkage group 4 of ‘Doyenne du Comice’ seems to indicate that sources of fire blight resistance can be identified also in the susceptible cultivars.

中文翻译:

乌苏里梨(Pyrus ussuriensis Maxim)连锁群11中存在火疫病抗性的首次报告。

火疫病是由革兰氏阴性细菌Erwinia amylovora (Burrill) Winslow 等人引起的,是一种危险的梨果病害,包括梨。2003 年,波兰华沙生命科学大学果树学系启动了抗火疫病梨育种计划。由于一些亚洲物种被认为是抗火疫病的潜在来源,易感的Pyrus community 'Doyenne du Comice' 与抗性P. ussuriensis杂交。F 1通过人工芽接种测试了由 155 株幼苗组成的全同胞后代对火疫病的敏感性。基于48个AFLP和32个SSR标记构建了双亲的框架连锁图,覆盖了'Doyenne du Comice'和P. ussuriensis的长度分别为595 cM和680 cM 。首次在P. ussuriensis连锁群 11 中确定了一个推定的抗火疫病 QTL 。'Doyenne du Comice' 连锁群 4 中的另一个推定 QTL 似乎表明也可以在易感品种中鉴定抗火疫病的来源。
更新日期:2020-09-22
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