Phytoph 12-2

Parent 1:	S99-2281
Parent 2:	PI 408105A
Heritability:	0.87
Num loci tested:	613
Interval length:	5.4
Interval LOD score:	3.3
Trait name:	Reaction to Phytophthora sojae infection

Controlled vocabulary terms associated with the QTL

Source	Accession Number
Plant Trait Ontology	TO:0000439

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Other related QTL's

Phytoph 12-1

References for the QTL

Nguyen et al. 2012

Mapping of quantitative trait loci associated with resistance to Phytophthora sojae and flooding tolerance in soybean
Crop Sci. 2012, 52(6):2481-2493

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Maps containing Phytoph 12-2

Map	LG	Start	End
GmComposite2003_D2	D2	88.01	93.41	See this QTL region in Sequence Browser

Loci positively associated with the QTL

Satt543

Phenotypic_R2

8.8

Satt543

Favorable_allele_source

PI 408105A

Satt543

Additive_effect

0.27

Population types used in identification of the QTL

F7:8 RIL

Parent trait values associated with the QTL

Parent	Trait
S99-2281	Lower P. sojae resistance
PI 408105A	Higher P. sojae resistance

Other QTLs studied

Flooding tolerance

Loci associated with the QTL

Satt543

Methods used to identify the QTL

JoinMap 3.0

MapQTL 5.0

CIM

Comments about the QTL

Publication detected this QTL in each of two years. Only first year QTL presented in SoyBase

Publication measured P. sojae disease level which was defined as 1 to 9 rating, where 1 indicates no root rot or disease escape, 9 indicates 100% of the seedlings have died. See publication for additional details

Parent_1 was S99-2281, Parent_2 was PI 408105A

Trait is reaction to Phytophthora sojae, the causative organism for Phytophthora root and stem rot and Phytophthora seed decay.

Funded by the USDA-ARS. Developed by the USDA-ARS SoyBase and Legume Clade Database group at the Iowa State University, Ames, IA

U.S. Public Domain