NDLI: QTL mapping of resistance to leaf rust in Salix

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QTL mapping of resistance to leaf rust in Salix

Content Provider	Springer Nature Link
Author	Samils, Berit Rönnberg Wästljung, Ann Christin Stenlid, Jan
Copyright Year	2011
Abstract	Genetic mapping of quantitative trait loci (QTL) for resistance to Melampsora leaf rust was performed in two willow families: the progeny from a backcross between Salix viminalis and a hybrid S. viminalis × Salix schwerinii (population S$_{1}$), and the F$_{1}$ progeny of a cross between two S. viminalis (population S$_{3}$). Disease levels were scored in the field for three consecutive years. In the laboratory, five different rust strains were sprayed onto leaf disks and the following resistance components were scored: latent period, diameter and number of uredinia, and flecking. One major QTL and 14 smaller were identified in the S$_{1}$ host population. One rust strain, that represents a Melampsora form with limited incidence on S. viminalis, showed lower aggressiveness to the S$_{1}$ host population together with a different pattern in QTLs. In the S$_{3}$ host population, we detected 13 QTLs for rust resistance, of which two were located to the same genomic regions as those found for the S$_{1}$ population. We showed that the strongest QTL co-segregated with a gene homologous to a known Toll/interleukin receptor-nucleotide binding site-leucine-rich repeat resistance gene in poplar. The importance of the identified QTLs is discussed in relation to breeding for durable resistance.
Starting Page	1219
Ending Page	1235
Page Count	17
File Format	PDF
ISSN	16142942
Journal	Tree Genetics & Genomes
Volume Number	7
Issue Number	6
e-ISSN	16142950
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-07-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Melampsora larici-epitea Salix Biomass willow QTL mapping Leaf rust resistance Plant Breeding/Biotechnology Forestry Plant Genetics & Genomics Biotechnology Tree Biology
Content Type	Text
Resource Type	Article
Subject	Genetics Molecular Biology Horticulture Forestry

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