Next Article in Journal
Dasatinib Inhibits Procoagulant and Clot Retracting Activities of Human Platelets
Next Article in Special Issue
Identification of a Major QTL (qRRs-10.1) That Confers Resistance to Ralstonia solanacearum in Pepper (Capsicum annuum) Using SLAF-BSA and QTL Mapping
Previous Article in Journal
Neutral Sphingomyelinase Modulation in the Protective/Preventive Role of rMnSOD from Radiation-Induced Damage in the Brain
Previous Article in Special Issue
Physical Mapping of Stem Rust Resistance Gene Sr52 from Dasypyrum villosum Based on ph1b-Induced Homoeologous Recombination
Article

Characterization of QTLs for Seedling Resistance to Tan Spot and Septoria Nodorum Blotch in the PBW343/Kenya Nyangumi Wheat Recombinant Inbred Lines Population

1
International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, México 06600, D.F., Mexico
2
State Key Laboratory of Crop Biology, Cooperation Innovation Center of Efficient Production with High Annual Yield of Wheat and Corn, Shandong Agricultural University, Taian 271018, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(21), 5432; https://doi.org/10.3390/ijms20215432
Received: 25 September 2019 / Revised: 25 October 2019 / Accepted: 28 October 2019 / Published: 31 October 2019
(This article belongs to the Special Issue Mapping Plant Genes that Confer Resistance to Biotic Stress)
Tan spot (TS) and Septoria nodorum blotch (SNB) induced by Pyrenophora tritici-repentis and Parastagonospora nodorum, respectively, cause significant yield losses and adversely affect grain quality. The objectives of this study were to decipher the genetics and map the resistance to TS and SNB in the PBW343/Kenya Nyangumi (KN) population comprising 204 F6 recombinant inbred lines (RILs). Disease screening was performed at the seedling stage under greenhouse conditions. TS was induced by P. tritici-repentis isolate MexPtr1 while SNB by P. nodorum isolate MexSN1. Segregation pattern of the RILs indicated that resistance to TS and SNB in this population was quantitative. Diversity Array Technology (DArTs) and simple sequence repeats (SSRs) markers were used to identify the quantitative trait loci (QTL) for the diseases using inclusive composite interval mapping (ICIM). Seven significant additive QTLs for TS resistance explaining 2.98 to 23.32% of the phenotypic variation were identified on chromosomes 1A, 1B, 5B, 7B and 7D. For SNB, five QTLs were found on chromosomes 1A, 5A, and 5B, explaining 5.24 to 20.87% of the phenotypic variation. The TS QTL on 1B chromosome coincided with the pleiotropic adult plant resistance (APR) gene Lr46/Yr29/Pm39. This is the first report of the APR gene Lr46/Yr29/Pm39 contributing to TS resistance. View Full-Text
Keywords: Genetics; Triticum aestivum; host-pathogen interaction; Pyrenophora tritici-repentis; Parastagonospora nodorum Genetics; Triticum aestivum; host-pathogen interaction; Pyrenophora tritici-repentis; Parastagonospora nodorum
Show Figures

Figure 1

MDPI and ACS Style

Singh, P.K.; Singh, S.; Deng, Z.; He, X.; Kehel, Z.; Singh, R.P. Characterization of QTLs for Seedling Resistance to Tan Spot and Septoria Nodorum Blotch in the PBW343/Kenya Nyangumi Wheat Recombinant Inbred Lines Population. Int. J. Mol. Sci. 2019, 20, 5432. https://doi.org/10.3390/ijms20215432

AMA Style

Singh PK, Singh S, Deng Z, He X, Kehel Z, Singh RP. Characterization of QTLs for Seedling Resistance to Tan Spot and Septoria Nodorum Blotch in the PBW343/Kenya Nyangumi Wheat Recombinant Inbred Lines Population. International Journal of Molecular Sciences. 2019; 20(21):5432. https://doi.org/10.3390/ijms20215432

Chicago/Turabian Style

Singh, Pawan K.; Singh, Sukhwinder; Deng, Zhiying; He, Xinyao; Kehel, Zakaria; Singh, Ravi P. 2019. "Characterization of QTLs for Seedling Resistance to Tan Spot and Septoria Nodorum Blotch in the PBW343/Kenya Nyangumi Wheat Recombinant Inbred Lines Population" Int. J. Mol. Sci. 20, no. 21: 5432. https://doi.org/10.3390/ijms20215432

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop