Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination
Abstract Spot blotch and terminal heat are two of the most important stresses for wheat in South Asia. A study was initiated to explore the use of spelt (Triticum spelta) to improve tolerance to these stresses in spring wheat (T. aestivum). We assessed 185 recombinant inbred lines (RILs) from the cr...
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doaj-fd3bd0630e844f4194e249d4e815405e2021-03-21T12:36:39ZengNature Publishing GroupScientific Reports2045-23222021-03-0111111210.1038/s41598-021-85238-xCrosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combinationAjeet Kumar Pandey0Vinod Kumar Mishra1Ramesh Chand2Sudhir Navathe3Neeraj Budhlakoti4Jayasudha Srinivasa5Sandeep Sharma6Arun Kumar Joshi7Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHUDepartment of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHUDepartment of Mycology and Plant Pathology, Institute of Agricultural Sciences, BHUGenetics and Plant Breeding Group, Agharkar Research InstituteICAR- Indian Agricultural Statistics Research InstituteDepartment of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHUDepartment of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHUInternational Maize and Wheat Improvement Centre (CIMMYT)Abstract Spot blotch and terminal heat are two of the most important stresses for wheat in South Asia. A study was initiated to explore the use of spelt (Triticum spelta) to improve tolerance to these stresses in spring wheat (T. aestivum). We assessed 185 recombinant inbred lines (RILs) from the cross T. spelta (H + 26) × T. aestivum (cv. HUW234), under the individual stresses and their combination. H + 26 showed better tolerance to the single stresses and also their combination; grain yield in RILs was reduced by 21.9%, 27.7% and 39.0% under spot blotch, terminal heat and their combined effect, respectively. However, phenological and plant architectural traits were not affected by spot blotch itself. Multivariate analysis demonstrated a strong negative correlation between spikelet sterility and grain yield under spot blotch, terminal heat and their combination. However, four recombinant lines demonstrated high performance under both stresses and also under their combined stress. The four lines were significantly superior in grain yield and showed significantly lower AUDPC than the better parent. This study demonstrates the potential of spelt wheat in enhancing tolerance to spot blotch and terminal heat stresses. It also provides comprehensive evidence about the expression of yield and phenological traits under these stresses.https://doi.org/10.1038/s41598-021-85238-x |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ajeet Kumar Pandey Vinod Kumar Mishra Ramesh Chand Sudhir Navathe Neeraj Budhlakoti Jayasudha Srinivasa Sandeep Sharma Arun Kumar Joshi |
spellingShingle |
Ajeet Kumar Pandey Vinod Kumar Mishra Ramesh Chand Sudhir Navathe Neeraj Budhlakoti Jayasudha Srinivasa Sandeep Sharma Arun Kumar Joshi Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination Scientific Reports |
author_facet |
Ajeet Kumar Pandey Vinod Kumar Mishra Ramesh Chand Sudhir Navathe Neeraj Budhlakoti Jayasudha Srinivasa Sandeep Sharma Arun Kumar Joshi |
author_sort |
Ajeet Kumar Pandey |
title |
Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination |
title_short |
Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination |
title_full |
Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination |
title_fullStr |
Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination |
title_full_unstemmed |
Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination |
title_sort |
crosses with spelt improve tolerance of south asian spring wheat to spot blotch, terminal heat stress, and their combination |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-03-01 |
description |
Abstract Spot blotch and terminal heat are two of the most important stresses for wheat in South Asia. A study was initiated to explore the use of spelt (Triticum spelta) to improve tolerance to these stresses in spring wheat (T. aestivum). We assessed 185 recombinant inbred lines (RILs) from the cross T. spelta (H + 26) × T. aestivum (cv. HUW234), under the individual stresses and their combination. H + 26 showed better tolerance to the single stresses and also their combination; grain yield in RILs was reduced by 21.9%, 27.7% and 39.0% under spot blotch, terminal heat and their combined effect, respectively. However, phenological and plant architectural traits were not affected by spot blotch itself. Multivariate analysis demonstrated a strong negative correlation between spikelet sterility and grain yield under spot blotch, terminal heat and their combination. However, four recombinant lines demonstrated high performance under both stresses and also under their combined stress. The four lines were significantly superior in grain yield and showed significantly lower AUDPC than the better parent. This study demonstrates the potential of spelt wheat in enhancing tolerance to spot blotch and terminal heat stresses. It also provides comprehensive evidence about the expression of yield and phenological traits under these stresses. |
url |
https://doi.org/10.1038/s41598-021-85238-x |
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