Person: Singh, P.K.
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Singh
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P.K.
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Singh, P.K.
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0000-0003-4610-3120 13 results
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- Assessment of Indian wheat germplasm for Septoria nodorum blotch and tan spot reveals new QTLs conferring resistance along with recessive alleles of Tsn1 and Snn3(Frontiers Media S.A., 2023) Sudhir Navathe; Xinyao He; Kamble, U.; Kumar, M.; Patial, M.; Gyanendra Singh; Singh, G.P.; Joshi, A.K.; Singh, P.K.
Publication - Mapeo de QTL en línea Mutus#1 de trigo resistente a la mancha foliar(INIFAP, 2022) Sánchez-Vidaña, M.R.; Vargas Hernández, M.; Xinyao He; Sansaloni, C.; Singh, P.K.; Hernández-Anguiano, A.M.
Publication - Pre-emptive breeding against karnal bunt infection in common wheat: combining genomic and agronomic information to identify suitable parents(Frontiers, 2021) Emebiri, L.C.; Hildebrand, S.; Tan, M.K.; Juliana, P.; Singh, P.K.; Fuentes Dávila, G.; Singh, R.P.
Publication - Identification of QTLs for spot blotch resistance in two bi-parental mapping populations of wheat(MDPI, 2021) Gahtyari, N.C.; Roy, C.; Xinyao He; Roy, K.K.; Reza, M.M.A.; Hakim M.A.; Malaker, P.K.; Joshi, A.K.; Singh, P.K.
Publication - Genetic analysis and mapping of seedling resistance to Septoria tritici blotch in 'Steele-ND'/'ND 735' bread wheat population(Akadémiai Kiadó, 2013) Mergoum, M.; Harilal, V.E.; Singh, P.K.; Adhikari, T.B.; Kumar, A.; Ghavami, F.; Elias, E.; Alamri, M.S.; Kianian, S.F.
Publication - Situación actual de la mancha foliar del trigo causada por Zymoseptoria tritici en México = Current status of the Septoria tritici blotch of wheat caused by Zymoseptoria tritici in Mexico(SOMEFI, 2020) Sánchez-Vidaña, M.R.; Hernández-Anguiano, A.M.; Yáñez-Morales, M.J.; Xinyao He; Singh, P.K.
Publication - A wheat chromosome 5AL region confers seedling resistance to both tan spot and Septoria nodorum blotch in two mapping populations(Elsevier, 2019) Wenjing Hua; Xinyao He; Dreisigacker, S.; Sansaloni, C.; Juliana, P.; Singh, P.K.Tan spot (TS) and Septoria nodorum blotch (SNB), caused by Pyrenophora tritici-repentis and Parastagonospora nodorum, respectively, are important fungal leaf-spotting diseases of wheat that cause significant losses in grain yield. In this study, two recombinant inbred line populations, ‘Bartai’ × ‘Ciano T79’ (referred to as B × C) and ‘Cascabel’ × ‘Ciano T79’ (C × C) were tested for TS and SNB response in order to determine the genetic basis of seedling resistance. Genotyping was performed with the DArTseq genotyping-by-sequencing (GBS) platform. A chromosome region on 5AL conferred resistance to TS and SNB in both populations, but the effects were larger in B × C (R2 = 11.2%–16.8%) than in C × C (R2 = 2.5%–9.7%). Additionally, the chromosome region on 5BL (presumably Tsn1) was significant for both TS and SNB in B × C but not in C × C. Quantitative trait loci (QTL) with minor effects were identified on chromosomes 1B, 2A, 2B, 3A, 3B, 4D, 5A, 5B, 5D, 6B, and 6D. The two CIMMYT breeding lines ‘Bartai’ and ‘Cascabel’ contributed resistance alleles at both 5AL and 5BL QTL mentioned above. The QTL on 5AL showed linkage with the Vrn-A1 locus, whereas the vrn-A1 allele conferring lateness was associated with resistance to TS and SNB.
Publication - Characterization of QTLs for seedling resistance to tan spot and Septoria nodorum blotch in the PBW343/Kenya Nyangumi wheat recombinant inbred lines population(MDPI, 2019) Singh, P.K.; Singh, S.; Zhiying Deng; Xinyao He; Kehel, Z.; Singh, R.P.
Publication - Genome wide association study of karnal bunt resistance in a wheat germplasm collection from Afghanistan(MDPI, 2019) Gupta, V.; Xinyao He; Kumar, N.; Fuentes Dávila, G.; Sharma, R.; Dreisigacker, S.; Juliana, P.; Ataei, N.; Singh, P.K.Karnal bunt disease of wheat, caused by the fungus Neovossia indica, is one of the most important challenges to the grain industry as it affects the grain quality and also restricts the international movement of infected grain. It is a seed-, soil- and airborne disease with limited effect of chemical control. Currently, this disease is contained through the deployment of host resistance but further improvement is limited as only a few genotypes have been found to carry partial resistance. To identify genomic regions responsible for resistance in a set of 339 wheat accessions, genome-wide association study (GWAS) was undertaken using the DArTSeq® technology, in which 18 genomic regions for Karnal bunt resistance were identified, explaining 5–20% of the phenotypic variation. The identified quantitative trait loci (QTL) on chromosome 2BL showed consistently significant effects across all four experiments, whereas another QTL on 5BL was significant in three experiments. Additional QTLs were mapped on chromosomes 1DL, 2DL, 4AL, 5AS, 6BL, 6BS, 7BS and 7DL that have not been mapped previously, and on chromosomes 4B, 5AL, 5BL and 6BS, which have been reported in previous studies. Germplasm with less than 1% Karnal bunt infection have been identified and can be used for resistance breeding. The SNP markers linked to the genomic regions conferring resistance to Karnal bunt could be used to improve Karnal bunt resistance through marker-assisted selection.
Publication - Resistance to spot blotch in two mapping populations of common wheat is controlled by multiple QTL of minor effects(MDPI, 2018) Singh, P.K.; Xinyao He; Sansaloni, C.; Juliana, P.; Dreisigacker, S.; Duveiller, E.; Kumar, U.; Joshi, A.K.; Singh, R.P.Spot blotch (SB) is an important fungal disease of wheat in South Asia and South America. Host resistance is regarded as an economical and environmentally friendly approach of controlling SB, and the inheritance of resistance is mostly quantitative. In order to gain a better understanding on the SB resistance echanism in CIMMYT germplasm, two bi-parental mapping populations were generated, both comprising 232 F2:7 progenies. Elite CIMMYT breeding lines, BARTAI and WUYA, were used as resistant parents, whereas CIANO T79 was used as susceptible parent in both populations. The two populations were evaluated for field SB resistance at CIMMYT’s Agua Fria station for three consecutive years, from the 2012–2013 to 2014–2015 cropping seasons. Phenological traits like plant height (PH) and days to heading (DH) were also determined. Genotyping was performed using the DArTSeq genotyping-by-sequencing (GBS) platform, and a few D-genome specific SNPs and those for phenological traits were integrated for analysis. The most prominent quantitative trait locus (QTL) in both populations was found on chromosome 5AL at the Vrn-A1 locus, explaining phenotypic variations of 7–27%. Minor QTL were found on chromosomes 1B, 3A, 3B, 4B, 4D, 5B and 6D in BARTAI and on chromosomes 1B, 2A, 2D and 4B in WUYA, whereas minor QTL contributed by CIANO T79 were identified on chromosome 1B, 1D, 3A, 4B and 7A. In summary, resistance to SB in the two mapping populations was controlled by multiple minor QTL, with strong influence from Vrn-A1.
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