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GrainGenes Reference Report: BBQ-27-3627

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Reference	BBQ-27-3627
Title	Molecular genetic analysis of domestication traits in emmer wheat. I: Map construction and QTL analysis using an F2 pupulation.
Journal	Biotechnology and Biotechnological Equipment
Year	2013
Volume	27
Pages	3627-3637
Author	Mori N [ Show all 7 ]
Abstract	Emmer wheat (Triticum turgidum ssp. dicoccum) was a principal crop in the development and spread of Neolithic agriculture in the Old World. It represents the primitive situation in the domestication of AABB tetraploid wheat. To understand the genetic modifications underlying the early stage of tetraploid wheat domestication, QTL analysis was carried out using 144 F2 plants derived from a cross between the domesticated emmer wheat and the wild emmer wheat (T. turgidum ssp. dicoccoides). To our knowledge, this is the first report of molecular linkage map and QTL analysis of the domestication-related characters in emmer wheat. The linkage map with a total length of 2849.8 cM was constructed using 227 microsatellite (SSR) markers. Chromosomal location and effect of QTLs were estimated for ten domestication-related traits including whole plant and spike characteristics. Seventeen QTLs were detected on chromosomes 1B, 2A, 2B, 3A, 3B, 4A, 5B, and 7B. Two regions on chromosomes 2A and 3B have a large effect on rachis fragility. The estimated locations of these QTLs corresponded to those of the Br genes identified in the previous studies on a more adapted durum wheat (T. turgidum ssp. turgidum conv. durum). Our results indicate that selection and conversion of at least two Br loci (on chromosomes 2A and 3B) occurred during the domestication of emmer wheat prior to appearance of free-threshing wheat (e.g. durum). The map positions of nine QTLs for the traits related to seed production overlapped in two regions on chromosomes 2A and 5B. The result suggests that these chromosomal regions played an important role in increasing seed production during the domestication of emmer wheat.
External Databases	https://doi.org/10.5504/bbeq.2013.0008
QTL	[ Hide all but 1 of 30 ] QTgw.emmer2013-5B.1 QTgw.emmer2013-5B.2 QNk.emmer2013-2A QHsh.emmer2013-2A QHsh.emmer2013-3B QSpd.emmer2013-2A QSpd.emmer2013-4A.1 QSpd.emmer2013-4A.2 QStsp.emmer2013-5B QSl.emmer2013-2A QSl.emmer2013-7B QSn.emmer2013-2A QSn.emmer2013-2B QTsn.emmer2013-2A QHt.emmer2013-3A QStsp.emmer2013-1B QTL2045_5B-Thanh_et_al._2013 QTL2044_5B-Thanh_et_al._2013 QTL2038_2A-Thanh_et_al._2013 QTL2033_2A-Thanh_et_al._2013 QTL2040_3B-Thanh_et_al._2013 QTL2034_2A-Thanh_et_al._2013 QTL2041_4A-Thanh_et_al._2013 QTL2042_4A-Thanh_et_al._2013 QTL2043_5B-Thanh_et_al._2013 QTL2035_2A-Thanh_et_al._2013 QTL2046_7B-Thanh_et_al._2013 QTL2036_2A-Thanh_et_al._2013 QTL2039_2B-Thanh_et_al._2013 QTL2037_2A-Thanh_et_al._2013
Trait Study	Domestication traits, KU7309 x KU8736A, Thanh2013

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