QTL analysis of malting quality in barley based on the doubled-haploid progeny of two elite North American varieties representing different germplasm groups

被引：0

作者：

L. A. Marquez-Cedillo

P. M. Hayes

B. L. Jones

A. Kleinhofs

W. G. Legge

B. G. Rossnagel

K. Sato

S. E. Ullrich

D. M. Wesenberg

机构：

[1] http://www.css.orst.edu/barley/nabgmp/nabgmp.htm,

[2] Department of Crop and Soil Science,undefined

[3] Oregon State University,undefined

[4] Corvallis,undefined

[5] OR 97331,undefined

[6] USA Fax: +1-541-737-1589 e-mail: patrick.m.hayes@orst.edu,undefined

[7] Cereal Crops Research Unit,undefined

[8] USDA-ARS,undefined

[9] 501 N. Walnut St.,undefined

[10] Madison,undefined

[11] WI 53705,undefined

[12] USA,undefined

[13] Department of Crop and Soil Science,undefined

[14] Washington State University,undefined

[15] Pullman,undefined

[16] WA 99164,undefined

[17] USA,undefined

[18] Agriculture and Agri-Food Canada,undefined

[19] Brandon MB R7A 5Y3,undefined

[20] Canada,undefined

[21] Crop Development Centre,undefined

[22] University of Saskatchewan,undefined

[23] Saskatoon,undefined

[24] SK S7N 5A8,undefined

[25] Canada,undefined

[26] Research Institute for Bioresources,undefined

[27] Okayama University,undefined

[28] Kurashiki 710-0046 Japan,undefined

[29] National Small Grains Germplasm Research Facility,undefined

[30] P.O. Box 307,undefined

[31] Aberdeen,undefined

[32] ID 83210,undefined

[33] USA,undefined

来源：

Theoretical and Applied Genetics | 2000年 / 101卷

关键词：

Key words Hordeum vulgare; Two-rowed; Six-rowed; Quality traits; Quantitative trait loci;

D O I：

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中图分类号：

学科分类号：

摘要：

Characterization of the determinants of economically important phenotypes showing complex inheritance should lead to the more effective use of genetic resources. This study was conducted to determine the number, genome location and effects of QTLs determining malting quality in the two North American barley quality standards. Using a doubled-haploid population of 140 lines from the cross of Harrington×Morex, malting quality phenotype data sets from eight environments, and a 107-marker linkage map, QTL analyses were performed using simple interval mapping and simplified composite interval mapping procedures. Seventeen QTLs were associated with seven grain and malting quality traits (percentage of plump kernels, test weight, grain protein percentage, soluble/total protein ratio, α-amylase activity, diastatic power and malt-extract percentage). QTLs for multiple traits were coincident. The loci controlling inflorescence type [vrs1 on chromosome 2(2H) and int-c on chromosome 4(4H)] were coincident with QTLs affecting all traits except malt-extract percentage. The largest effect QTLs, for the percentage of plump kernels, test weight protein percentage, S/T ratio and diastatic power, were coincident with the vrs1 locus. QTL analyses were conducted separately for each sub-population (six-rowed and two-rowed). Eleven new QTLs were detected in the subpopulations. There were significant interactions between the vrs1 and int-c loci for grain-protein percentage and S/T protein ratio. Results suggest that this mating of two different germplasm groups caused a disruption of the balance of traits. Information on the number, position and effects of QTLs determining components of malting quality may be useful for maintaining specific allele configurations that determine target quality profiles.

引用

页码：173 / 184

页数：11