Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations
Spot blotch (SB) disease causes significant yield loss in wheat production in the warm and humid regions of the eastern Gangetic plains (EGP) of South Asia (SA). Most of the cultivated varieties in the eastern part of SA are affected by SB under favorable climatic conditions. To understand the nature of SB resistance and map the underlying resistant loci effective in SA, two bi-parental mapping populations were evaluated for 3 years, i.e., 2013–2015 for the BARTAI × CIANO T79 population (denoted as BC) and 2014–2016 for the CASCABEL × CIANO T79 population (CC), at Varanasi, Uttar Pradesh, India. DArTSeq genotyping-by-sequencing (GBS) platform was used for genotyping of the populations. Distribution of disease reaction of genotypes in both populations was continuous, revealing the quantitative nature of resistance. Significant “genotype,” “year,” and “genotype × year” interactions for SB were observed. Linkage map with the genome coverage of 8,598.3 and 9,024.7 cM in the BC and CC population, respectively, was observed. Two quantitative trait loci (QTLs) were detected on chromosomes 1A and 4D in the BC population with an average contribution of 4.01 and 12.23% of the total phenotypic variation (PV), respectively. Seven stable QTLs were detected on chromosomes 1B, 5A, 5B, 6A, 7A, and 7B in the CC population explaining 2.89–10.32% of PV and collectively 39.91% of the total PV. The QTL detected at the distal end of 5A chromosome contributed 10.32% of the total PV. The QTLs on 6A and 7B in CC could be new, and the one on 5B may represent the Sb2 gene. These QTLs could be used in SB resistance cultivar development for SA.
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Frontiers
2021
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Bipolaris sorokiniana, Bi-Parental Mapping, DArT-Seq, Spot Blotch, COCHLIOBOLUS SATIVUS, SINGLE NUCLEOTIDE POLYMORPHISM, QUANTITATIVE TRAIT LOCI, WHEAT, SPOTS, DISEASE RESISTANCE, |
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dig-cimmyt-10883-213432023-02-08T20:34:28Z Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations Roy, C. Gahtyari, N.C. Xinyao He Vinod Kumar Mishra Chand, R. Joshi, A.K. Singh, P.K. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE Spot blotch (SB) disease causes significant yield loss in wheat production in the warm and humid regions of the eastern Gangetic plains (EGP) of South Asia (SA). Most of the cultivated varieties in the eastern part of SA are affected by SB under favorable climatic conditions. To understand the nature of SB resistance and map the underlying resistant loci effective in SA, two bi-parental mapping populations were evaluated for 3 years, i.e., 2013–2015 for the BARTAI × CIANO T79 population (denoted as BC) and 2014–2016 for the CASCABEL × CIANO T79 population (CC), at Varanasi, Uttar Pradesh, India. DArTSeq genotyping-by-sequencing (GBS) platform was used for genotyping of the populations. Distribution of disease reaction of genotypes in both populations was continuous, revealing the quantitative nature of resistance. Significant “genotype,” “year,” and “genotype × year” interactions for SB were observed. Linkage map with the genome coverage of 8,598.3 and 9,024.7 cM in the BC and CC population, respectively, was observed. Two quantitative trait loci (QTLs) were detected on chromosomes 1A and 4D in the BC population with an average contribution of 4.01 and 12.23% of the total phenotypic variation (PV), respectively. Seven stable QTLs were detected on chromosomes 1B, 5A, 5B, 6A, 7A, and 7B in the CC population explaining 2.89–10.32% of PV and collectively 39.91% of the total PV. The QTL detected at the distal end of 5A chromosome contributed 10.32% of the total PV. The QTLs on 6A and 7B in CC could be new, and the one on 5B may represent the Sb2 gene. These QTLs could be used in SB resistance cultivar development for SA. 2021-03-31T00:20:13Z 2021-03-31T00:20:13Z 2021 Article Published Version https://hdl.handle.net/10883/21343 10.3389/fpls.2021.641324 English https://hdl.handle.net/11529/10548547 https://figshare.com/collections/Dissecting_Quantitative_Trait_Loci_for_Spot_Blotch_Resistance_in_South_Asia_Using_Two_Wheat_Recombinant_Inbred_Line_Populations/5326346 CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose Open Access Switzerland Frontiers 12 1664-462X Frontiers in Plant Science 641324 |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE Roy, C. Gahtyari, N.C. Xinyao He Vinod Kumar Mishra Chand, R. Joshi, A.K. Singh, P.K. Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
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Spot blotch (SB) disease causes significant yield loss in wheat production in the warm and humid regions of the eastern Gangetic plains (EGP) of South Asia (SA). Most of the cultivated varieties in the eastern part of SA are affected by SB under favorable climatic conditions. To understand the nature of SB resistance and map the underlying resistant loci effective in SA, two bi-parental mapping populations were evaluated for 3 years, i.e., 2013–2015 for the BARTAI × CIANO T79 population (denoted as BC) and 2014–2016 for the CASCABEL × CIANO T79 population (CC), at Varanasi, Uttar Pradesh, India. DArTSeq genotyping-by-sequencing (GBS) platform was used for genotyping of the populations. Distribution of disease reaction of genotypes in both populations was continuous, revealing the quantitative nature of resistance. Significant “genotype,” “year,” and “genotype × year” interactions for SB were observed. Linkage map with the genome coverage of 8,598.3 and 9,024.7 cM in the BC and CC population, respectively, was observed. Two quantitative trait loci (QTLs) were detected on chromosomes 1A and 4D in the BC population with an average contribution of 4.01 and 12.23% of the total phenotypic variation (PV), respectively. Seven stable QTLs were detected on chromosomes 1B, 5A, 5B, 6A, 7A, and 7B in the CC population explaining 2.89–10.32% of PV and collectively 39.91% of the total PV. The QTL detected at the distal end of 5A chromosome contributed 10.32% of the total PV. The QTLs on 6A and 7B in CC could be new, and the one on 5B may represent the Sb2 gene. These QTLs could be used in SB resistance cultivar development for SA. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bipolaris sorokiniana Bi-Parental Mapping DArT-Seq Spot Blotch COCHLIOBOLUS SATIVUS SINGLE NUCLEOTIDE POLYMORPHISM QUANTITATIVE TRAIT LOCI WHEAT SPOTS DISEASE RESISTANCE |
author |
Roy, C. Gahtyari, N.C. Xinyao He Vinod Kumar Mishra Chand, R. Joshi, A.K. Singh, P.K. |
author_facet |
Roy, C. Gahtyari, N.C. Xinyao He Vinod Kumar Mishra Chand, R. Joshi, A.K. Singh, P.K. |
author_sort |
Roy, C. |
title |
Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
title_short |
Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
title_full |
Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
title_fullStr |
Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
title_full_unstemmed |
Dissecting quantitative trait loci for spot blotch resistance in South Asia using two wheat recombinant inbred line populations |
title_sort |
dissecting quantitative trait loci for spot blotch resistance in south asia using two wheat recombinant inbred line populations |
publisher |
Frontiers |
publishDate |
2021 |
url |
https://hdl.handle.net/10883/21343 |
work_keys_str_mv |
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