Impact of the D genome and quantitative trait loci on quantitative traits in a spring durum by spring bread wheat cross

被引：21

作者：

Kalous, J. R. ^{[1
]}

Martin, J. M. ^{[1
]}

Sherman, J. D. ^{[1
]}

Heo, H. -Y. ^{[1
]}

Blake, N. K. ^{[1
]}

Lanning, S. P. ^{[1
]}

Eckhoff, J. L. A. ^{[1
,2
]}

Chao, S. ^{[3
]}

Akhunov, E. ^{[4
]}

Talbert, L. E. ^{[1
]}

机构：

[1] Montana State Univ, Dept Plant Sci & Plant Pathol, Bozeman, MT 59717 USA

[2] Eastern Agr Res Ctr, Dept Res Ctr, Sidney, MT 59270 USA

[3] USDA ARS, Cereal Crops Res Unit, Fargo, ND 58102 USA

[4] Kansas State Univ, Dept Plant Pathol, Throckmorton Plant Sci Ctr, Manhattan, KS 66506 USA

来源：

THEORETICAL AND APPLIED GENETICS | 2015年 / 128卷 / 09期

基金：

美国食品与农业研究所;

关键词：

GRAIN PROTEIN; RUST RESISTANCE; QTL ANALYSIS; KERNEL SIZE; DIVERSITY; YIELD; MARKERS; WEIGHT; STEM; MUTATIONS;

D O I：

10.1007/s00122-015-2548-3

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The impact of the D genome and QTL in the A and B genomes on agronomic performance of hexaploid wheat and tetraploid durum was determined using novel recombinant inbred line populations derived from interploid crosses. Genetic differences between common hexaploid (6X) bread wheat (Triticum aestivum, 2n = 6x = 42, genome, AABBDD) and tetraploid (4X) durum wheat (T. turgidum subsp. durum, 2n = 4x = 28, genome, AABB) may exist due to effects of the D genome and allelic differences at loci in the A and B genomes. Previous work allowed identification of a 6X by 4X cross combination that resulted in a large number of fertile recombinant progeny at both ploidy levels. In this study, interspecific recombinant inbred line populations at both 4X and 6X ploidy with 88 and 117 individuals, respectively, were developed from a cross between Choteau spring wheat (6X) and Mountrail durum wheat (4X). The presence of the D genome in the 6X population resulted in increased yield, tiller number, kernel weight, and kernel size, as well as a decrease in stem solidness, test weight and seed per spike. Similar results were found with a second RIL population containing 152 lines from 18 additional 6X by 4X crosses. Several QTL for agronomic and quality traits were identified in both the 4X and 6X populations. Although negatively impacted by the lack of the D genome, kernel weight in Mountrail (4X) was higher than Choteau (6X) due to positive alleles from Mountrail on chromosomes 3B and 7A. These and other favorable alleles may be useful for introgression between ploidy levels.

引用

页码：1799 / 1811

页数：13

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