TY - JOUR
T1 - Iso-lines and inbred-lines confirmed loci that underlie resistance from cultivar 'Hartwig' to three soybean cyst nematode populations
AU - Kazi, Samreen
AU - Shultz, J.
AU - Afzal, J.
AU - Hashmi, Rizwan
AU - Jasim, Mohammed
AU - Bond, Jason
AU - Arelli, Prakash R.
AU - Lightfoot, David A.
N1 - Funding Information:
This research was funded over the past 11 years in part by grants from the NSF 9872635, ISA 95-122-04; 98-122-02 and 02-127-03 and USB 2228-6228. The integrated genetic and physical map was based upon work supported by the National Science Foundation under Grant No. 9872635. Any opinions, findings, and conclusions or recommendations expressed in this material were those of the author(s) and do not necessarily reflect the views of the National Science Foundation or United States Department of Agriculture. The continued support of SIUC, College of Agriculture and Office of the Vice Chancellor for Research to SK, JA and DAL was appreciated. The authors thank Drs. P. Gibson, O. Myers Jr. and M. Schmidt for assistance with germplasm development and maintenance from 1991 to 2000. We thank the “Soybean Genome Project”, at DoE Joint Genome Institute, for the timely release of the WGS reads, scaffolds and genome sequence.
PY - 2010/1
Y1 - 2010/1
N2 - Soybean [Glycine max (L.) Merr.] cultivars varied in their resistance to different populations of the soybean cyst nematode (SCN), Heterodera glycines, called HG Types. The rhg1 locus on linkage group G was necessary for resistance to all HG types. However, the loci for resistance to H. glycines HG Type 1.3- (race 14) and HG Type 1.2.5- (race 2) of the soybean cyst nematode have varied in their reported locations. The aims were to compare the inheritance of resistance to three nematode HG Types in a population segregating for resistance to SCN and to identify the underlying quantitative trait loci (QTL). 'Hartwig', a soybean cultivar resistant to most SCN HG Types, was crossed with the susceptible cultivar 'Flyer'. A total of 92 F5-derived recombinant inbred lines (RILs; or inbred lines) and 144 molecular markers were used for map development. The rhg1 associated QTL found in earlier studies were confirmed and shown to underlie resistance to all three HG Types in RILs (Satt309; HG Type 0, P = 0.0001 R2 = 22%; Satt275; HG Type 1. 3, P = 0. 001, R2 = 14%) and near isogeneic lines (NILs; or iso-lines; Satt309; HG Type 1. 2.5-, P = 0.001 R2 = 24%). A new QTL underlying resistance to HG Type 1.2.5- was detected on LG D2 (Satt574; P = 0. 001, R2 = 11%) among 14 RILs resistant to the other HG types. The locus was confirmed in a small NIL population consisting of 60 plants of ten genotypes (P = 0.04). This QTL (cqSCN-005) is located in an interval previously associated with resistance to both SDS leaf scorch from 'Pyramid' and 'Ripley' (cqSDS-001) and SCN HG Type 1.3- from Hartwig and Pyramid. The QTL detected will allow marker assisted selection for multigenic resistance to complex nematode populations in combination with sudden death syndrome resistance (SDS) and other agronomic traits.
AB - Soybean [Glycine max (L.) Merr.] cultivars varied in their resistance to different populations of the soybean cyst nematode (SCN), Heterodera glycines, called HG Types. The rhg1 locus on linkage group G was necessary for resistance to all HG types. However, the loci for resistance to H. glycines HG Type 1.3- (race 14) and HG Type 1.2.5- (race 2) of the soybean cyst nematode have varied in their reported locations. The aims were to compare the inheritance of resistance to three nematode HG Types in a population segregating for resistance to SCN and to identify the underlying quantitative trait loci (QTL). 'Hartwig', a soybean cultivar resistant to most SCN HG Types, was crossed with the susceptible cultivar 'Flyer'. A total of 92 F5-derived recombinant inbred lines (RILs; or inbred lines) and 144 molecular markers were used for map development. The rhg1 associated QTL found in earlier studies were confirmed and shown to underlie resistance to all three HG Types in RILs (Satt309; HG Type 0, P = 0.0001 R2 = 22%; Satt275; HG Type 1. 3, P = 0. 001, R2 = 14%) and near isogeneic lines (NILs; or iso-lines; Satt309; HG Type 1. 2.5-, P = 0.001 R2 = 24%). A new QTL underlying resistance to HG Type 1.2.5- was detected on LG D2 (Satt574; P = 0. 001, R2 = 11%) among 14 RILs resistant to the other HG types. The locus was confirmed in a small NIL population consisting of 60 plants of ten genotypes (P = 0.04). This QTL (cqSCN-005) is located in an interval previously associated with resistance to both SDS leaf scorch from 'Pyramid' and 'Ripley' (cqSDS-001) and SCN HG Type 1.3- from Hartwig and Pyramid. The QTL detected will allow marker assisted selection for multigenic resistance to complex nematode populations in combination with sudden death syndrome resistance (SDS) and other agronomic traits.
UR - http://www.scopus.com/inward/record.url?scp=75849163619&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=75849163619&partnerID=8YFLogxK
U2 - 10.1007/s00122-009-1181-4
DO - 10.1007/s00122-009-1181-4
M3 - Article
C2 - 19856174
AN - SCOPUS:75849163619
SN - 0040-5752
VL - 120
SP - 633
EP - 644
JO - Theoretical and Applied Genetics
JF - Theoretical and Applied Genetics
IS - 3
ER -