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Quantitative trait loci underlying resistance to sudden death syndrome (SDS) in MD96-5722 by ‘ Spencer ’ recombinant inbred line population of soybean

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ABSTRACT

The best way to protect yield loss of soybean [Glycine max (L.) Merr.] due to sudden death syndrome (SDS), caused by Fusarium virguliforme (Aoki, O’Donnel, Homma & Lattanzi), is the development and use of resistant lines. Mapping quantitative trait loci (QTL) linked to SDS help developing resistant soybean germplasm through molecular marker-assisted selection strategy. QTL for SDS presented herein are from a high-density SNP-based genetic linkage map of MD 96-5722 (a.k.a ‘Monocacy’) by ‘Spencer’ recombinant inbred line using SoySNP6K Illumina Infinium BeadChip genotyping array. Ninety-four F5:7 lines were evaluated for 2 years (2010 and 2011) at two locations (Carbondale and Valmeyer) in southern Illinois, USA to identify QTL controlling SDS resistance using disease index (DX). Composite interval mapping identified 19 SDS controlling QTL which were mapped on 11 separate linkage group (LG) or chromosomes (Chr) out of 20 LG or Chr of soybean genome. Many of these significant QTL identified in one environment/year were confirmed in another year or environment, which suggests a common genetic effects and modes of the pathogen. These new QTL are useful sources for SDS resistance studies in soybean breeding, complementing previously reported loci.

No MeSH data available.


Chromosomal locations of QTL of disease index (DX) in MD 96-5722 and ‘Spencer’ RIL population evaluated in three different environments in Carbondale, IL in 2010, Valmeyer, IL in 2010 and Valmeyer, IL in 2011
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Fig2: Chromosomal locations of QTL of disease index (DX) in MD 96-5722 and ‘Spencer’ RIL population evaluated in three different environments in Carbondale, IL in 2010, Valmeyer, IL in 2010 and Valmeyer, IL in 2011

Mentions: Table 2 and Fig. 2 show chromosomal locations and parameters associated with SDS QTL based on DX as calculated from data obtained from three different environments, i.e., Carbondale, IL in 2010 (C-10) and Valmeyer, IL in 2010 (V-10) and Valmeyer, IL in 2011 (V-11). QTL nomenclature was designated based on SoyBase principles and contained abbreviation of disease index (DX) then the serial number of QTL and name of each environment or year in parenthesis. CIM identified 19 QTL for SDS and platted on 11 separate chromosomes of soybean genome (Table 2; Fig. 2). Two QTL for DX [qDX001 (Car.10); qDX002 (Val.11)] were identified on same peak position (15.7 cM) with same marker interval ss244562583-ss244554797 (Table 2; Fig. 2) on LG D1a/Chr_1. QTL for DX had peak LOD score of 7.36 [qDX001 (Car.10)] and 3.61 [qDX002 (Val.11)] with additive effect of 11.77 and −0.14, respectively (Table 2). LG-N/Chr_3 had also two QTL for DX [qDX003 (Car.10); qDX004 (Val.11)]. DX QTL qDX003 (Car.10) and qDX003 (Car.10) had peak LOD score of 9.19 and 3.48 with corresponding additive effect of 13.24 and 2.96 (Table 2). CIM analysis identified two QTL for DX [qDX005 (Car.10); qDX005 (Val.11)] on LG-A1/Chr_5 with the peak LOD score of 9.21 and 10.10 with additive effect of −1.46 and −0.28, respectively (Table 2).Fig. 2


Quantitative trait loci underlying resistance to sudden death syndrome (SDS) in MD96-5722 by ‘ Spencer ’ recombinant inbred line population of soybean
Chromosomal locations of QTL of disease index (DX) in MD 96-5722 and ‘Spencer’ RIL population evaluated in three different environments in Carbondale, IL in 2010, Valmeyer, IL in 2010 and Valmeyer, IL in 2011
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4362743&req=5

Fig2: Chromosomal locations of QTL of disease index (DX) in MD 96-5722 and ‘Spencer’ RIL population evaluated in three different environments in Carbondale, IL in 2010, Valmeyer, IL in 2010 and Valmeyer, IL in 2011
Mentions: Table 2 and Fig. 2 show chromosomal locations and parameters associated with SDS QTL based on DX as calculated from data obtained from three different environments, i.e., Carbondale, IL in 2010 (C-10) and Valmeyer, IL in 2010 (V-10) and Valmeyer, IL in 2011 (V-11). QTL nomenclature was designated based on SoyBase principles and contained abbreviation of disease index (DX) then the serial number of QTL and name of each environment or year in parenthesis. CIM identified 19 QTL for SDS and platted on 11 separate chromosomes of soybean genome (Table 2; Fig. 2). Two QTL for DX [qDX001 (Car.10); qDX002 (Val.11)] were identified on same peak position (15.7 cM) with same marker interval ss244562583-ss244554797 (Table 2; Fig. 2) on LG D1a/Chr_1. QTL for DX had peak LOD score of 7.36 [qDX001 (Car.10)] and 3.61 [qDX002 (Val.11)] with additive effect of 11.77 and −0.14, respectively (Table 2). LG-N/Chr_3 had also two QTL for DX [qDX003 (Car.10); qDX004 (Val.11)]. DX QTL qDX003 (Car.10) and qDX003 (Car.10) had peak LOD score of 9.19 and 3.48 with corresponding additive effect of 13.24 and 2.96 (Table 2). CIM analysis identified two QTL for DX [qDX005 (Car.10); qDX005 (Val.11)] on LG-A1/Chr_5 with the peak LOD score of 9.21 and 10.10 with additive effect of −1.46 and −0.28, respectively (Table 2).Fig. 2

View Article: PubMed Central

ABSTRACT

The best way to protect yield loss of soybean [Glycine max (L.) Merr.] due to sudden death syndrome (SDS), caused by Fusarium virguliforme (Aoki, O’Donnel, Homma & Lattanzi), is the development and use of resistant lines. Mapping quantitative trait loci (QTL) linked to SDS help developing resistant soybean germplasm through molecular marker-assisted selection strategy. QTL for SDS presented herein are from a high-density SNP-based genetic linkage map of MD 96-5722 (a.k.a ‘Monocacy’) by ‘Spencer’ recombinant inbred line using SoySNP6K Illumina Infinium BeadChip genotyping array. Ninety-four F5:7 lines were evaluated for 2 years (2010 and 2011) at two locations (Carbondale and Valmeyer) in southern Illinois, USA to identify QTL controlling SDS resistance using disease index (DX). Composite interval mapping identified 19 SDS controlling QTL which were mapped on 11 separate linkage group (LG) or chromosomes (Chr) out of 20 LG or Chr of soybean genome. Many of these significant QTL identified in one environment/year were confirmed in another year or environment, which suggests a common genetic effects and modes of the pathogen. These new QTL are useful sources for SDS resistance studies in soybean breeding, complementing previously reported loci.

No MeSH data available.