Molecular mapping of genes determining hairy leaf character in common wheat with respect to other species of the Triticeae |
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| Authors: | O Dobrovolskaya T A Pshenichnikova V S Arbuzova U Lohwasser M S Röder A Börner |
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| Institution: | (1) Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany;(2) Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentyeva ave. 10, Novosibirsk, 630090, Russia |
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| Abstract: | Two major genes controlling leaf pubescence were mapped on chromosomes 4BL (Hl1) and 7BS (Hl2
Aesp
) in wheat (Saratovskaya 29) and a wheat/Aegilops introgression line (102/00I), respectively, together with quantitative trait loci (QTLs) determining hairiness of the leaf margin (QHl.ipk-4B, QHl.ipk-4D) and auricle (QPa.ipk-4B, QPa.ipk-4D) on the long arms of chromosomes 4B and 4D, respectively. The QTLs on chromosome 4D were contributed by a synthetic wheat
and, therefore, originated from Aegilops tauschii. The homoeologous group 4 wheat/A. tauschii genes/QTLs detected in the present study were aligned with the barley pubescence genes Hln/Hsh and Hs
b
and the hairy peduncle rye gene Hp1. The locus seems to be pleiotropically responsible for the pubescence of different plant organs in different species of the
Triticeae. Another homoeologous series may be present on the short arms of the homoeologous group 7 chromosomes, based on
the results of an allelic test cross between the Chinese local cultivar Hong-mang-mai carrying Hl2 and the wheat/Aegilops speltoides introgression line 102/00I. |
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| Keywords: | Genetic mapping Hairy leaf Microsatellite markers Pubescence QTL mapping Synteny Triticum aestivum |
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