Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.)
A total of 36 colocated QTLs associated with plant production traits were mapped using IR62266/Norungan recombinant inbred lines under drought and non-stress conditions in target populations of environment. Multi-model composite interval mapping and multi-environment analysis detected seven consiste...
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doaj-c5d49392048c48338524e7d7306023372021-08-09T15:50:06ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082021-07-0124338840310.1080/1343943X.2020.18626801862680Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.)Ashish B. Rajurkar0C. Muthukumar1Bharathi Ayyenar2Helen Baby Thomas3Ranganathan Chandra Babu4Tamil Nadu Agricultural University (TNAU)Tamil Nadu Agricultural University (TNAU)Tamil Nadu Agricultural University (TNAU)Tamil Nadu Agricultural University (TNAU)Tamil Nadu Agricultural University (TNAU)A total of 36 colocated QTLs associated with plant production traits were mapped using IR62266/Norungan recombinant inbred lines under drought and non-stress conditions in target populations of environment. Multi-model composite interval mapping and multi-environment analysis detected seven consistent QTLs for plant production traits on chromosomes 1, 2, 3, 6, 10 and 11. QTLs for plant height, number of tillers, biomass, spikelet fertility and grain yield under drought identified on chr. 1 (RM5389-RM11943-RM5794), chr. 2 (RM324-RM5390 and RM12460-RM423-RM5345), chr. 3 (RM6329-RM5475-RM16030), chr. 6 (RM508-RM585-RM217), chr. 10 (RM7361-RM8207) and chr. 11 (RM209-RM6499) in this study have been reported as meta-QTLs for yield under drought. Consistent positive allelic contribution from the landrace, Norungan was shown at the two QTLs on chr. 2, while IR62266 showed consistent positive allelic effect at the QTL on chr. 10. At other four regions the effect was confounded with the stress condition, for instance the region on chr. 3 identified for straw yield showed additive effect from Norungan in all stress trials, while in the non-stress trials the positive allele came from IR62266. Epistasis for grain yield was detected in the regions of non-additive effects and its relative contribution was small. Relatively small percentage of grain yield variation was explained by additive x environment interaction (0.28 - 1.77%), but was larger than that explained by additive effect QTL across environments (0.05 - 0.35%). These consistent QTLs may have genes evolutionarily conserved in response to drought and could be ideal candidates for rice yield improvement in water-limited environments.http://dx.doi.org/10.1080/1343943X.2020.1862680ricerainfed environmentdroughtlandracemarker-assisted breedingqtls |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ashish B. Rajurkar C. Muthukumar Bharathi Ayyenar Helen Baby Thomas Ranganathan Chandra Babu |
spellingShingle |
Ashish B. Rajurkar C. Muthukumar Bharathi Ayyenar Helen Baby Thomas Ranganathan Chandra Babu Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) Plant Production Science rice rainfed environment drought landrace marker-assisted breeding qtls |
author_facet |
Ashish B. Rajurkar C. Muthukumar Bharathi Ayyenar Helen Baby Thomas Ranganathan Chandra Babu |
author_sort |
Ashish B. Rajurkar |
title |
Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) |
title_short |
Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) |
title_full |
Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) |
title_fullStr |
Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) |
title_full_unstemmed |
Mapping consistent additive and epistatic QTLs for plant production traits under drought in target populations of environment using locally adapted landrace in rice (Oryza sativa L.) |
title_sort |
mapping consistent additive and epistatic qtls for plant production traits under drought in target populations of environment using locally adapted landrace in rice (oryza sativa l.) |
publisher |
Taylor & Francis Group |
series |
Plant Production Science |
issn |
1343-943X 1349-1008 |
publishDate |
2021-07-01 |
description |
A total of 36 colocated QTLs associated with plant production traits were mapped using IR62266/Norungan recombinant inbred lines under drought and non-stress conditions in target populations of environment. Multi-model composite interval mapping and multi-environment analysis detected seven consistent QTLs for plant production traits on chromosomes 1, 2, 3, 6, 10 and 11. QTLs for plant height, number of tillers, biomass, spikelet fertility and grain yield under drought identified on chr. 1 (RM5389-RM11943-RM5794), chr. 2 (RM324-RM5390 and RM12460-RM423-RM5345), chr. 3 (RM6329-RM5475-RM16030), chr. 6 (RM508-RM585-RM217), chr. 10 (RM7361-RM8207) and chr. 11 (RM209-RM6499) in this study have been reported as meta-QTLs for yield under drought. Consistent positive allelic contribution from the landrace, Norungan was shown at the two QTLs on chr. 2, while IR62266 showed consistent positive allelic effect at the QTL on chr. 10. At other four regions the effect was confounded with the stress condition, for instance the region on chr. 3 identified for straw yield showed additive effect from Norungan in all stress trials, while in the non-stress trials the positive allele came from IR62266. Epistasis for grain yield was detected in the regions of non-additive effects and its relative contribution was small. Relatively small percentage of grain yield variation was explained by additive x environment interaction (0.28 - 1.77%), but was larger than that explained by additive effect QTL across environments (0.05 - 0.35%). These consistent QTLs may have genes evolutionarily conserved in response to drought and could be ideal candidates for rice yield improvement in water-limited environments. |
topic |
rice rainfed environment drought landrace marker-assisted breeding qtls |
url |
http://dx.doi.org/10.1080/1343943X.2020.1862680 |
work_keys_str_mv |
AT ashishbrajurkar mappingconsistentadditiveandepistaticqtlsforplantproductiontraitsunderdroughtintargetpopulationsofenvironmentusinglocallyadaptedlandraceinriceoryzasatival AT cmuthukumar mappingconsistentadditiveandepistaticqtlsforplantproductiontraitsunderdroughtintargetpopulationsofenvironmentusinglocallyadaptedlandraceinriceoryzasatival AT bharathiayyenar mappingconsistentadditiveandepistaticqtlsforplantproductiontraitsunderdroughtintargetpopulationsofenvironmentusinglocallyadaptedlandraceinriceoryzasatival AT helenbabythomas mappingconsistentadditiveandepistaticqtlsforplantproductiontraitsunderdroughtintargetpopulationsofenvironmentusinglocallyadaptedlandraceinriceoryzasatival AT ranganathanchandrababu mappingconsistentadditiveandepistaticqtlsforplantproductiontraitsunderdroughtintargetpopulationsofenvironmentusinglocallyadaptedlandraceinriceoryzasatival |
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