Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress

Stress indices are a set of quantitative estimators that elucidate stress response by yield data from single or multi-environment evaluations. A major disadvantage of using such indices is the reported lack of correspondence in rankings across indices and their failure to delineate overlapping respo...

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Autor principal:	Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1
Formato:	article
Lenguaje:	EN
Publicado:	Indian Society of Plant Breeders 2021
Materias:	wheat heat stress ril population stress tolerance indices index scores ypsi yssi Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/3672c782848d4c3caf421aba74bab069
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spelling	oai:doaj.org-article:3672c782848d4c3caf421aba74bab0692021-11-15T06:00:03ZCombined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stressdoi.org/10.37992/2021.1203.0870975-928Xhttps://doaj.org/article/3672c782848d4c3caf421aba74bab0692021-09-01T00:00:00Zhttp://ejplantbreeding.org/index.php/EJPB/article/view/3622https://doaj.org/toc/0975-928XStress indices are a set of quantitative estimators that elucidate stress response by yield data from single or multi-environment evaluations. A major disadvantage of using such indices is the reported lack of correspondence in rankings across indices and their failure to delineate overlapping responses in terms of yields under stress. In the present study, HUW-234 x HUW-468 derived wheat RIL mapping population was used to validate the usefulness of such a modified index. The correlation coefficient between the index score and their original index values were negative for SSI (Stress Susceptibility Index) and TOL (Tolerance Index) and positive for MP (Mean Productivity), GMP (Geometric Mean Productivity) and STI (Stress Tolerance Index). Based on index scores, d two new indices namely YPSI (Yield Production Score Index) and YSSI (Yield Stress Score Index) were created by combining score indices. Using these indices, the RILs could be effectively classified into four stress response classes. Most of the genotypes fall in Class II, III and IV. As such, it is highly imperative to identify highly resilient (Class III) and productive genotypes (Class II) for planned crossing. Based on the results of present and earlier studies, it is proposed that the new indices YPSI and YSSI can be effectively used for evaluating large genotype sets in diverse environments for stress response. Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1Indian Society of Plant Breedersarticlewheatheat stressril populationstress tolerance indicesindex scoresypsiyssiPlant cultureSB1-1110ENElectronic Journal of Plant Breeding, Vol 12, Iss 3, Pp 612-622 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	wheat heat stress ril population stress tolerance indices index scores ypsi yssi Plant culture SB1-1110
spellingShingle	wheat heat stress ril population stress tolerance indices index scores ypsi yssi Plant culture SB1-1110 Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1 Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
description	Stress indices are a set of quantitative estimators that elucidate stress response by yield data from single or multi-environment evaluations. A major disadvantage of using such indices is the reported lack of correspondence in rankings across indices and their failure to delineate overlapping responses in terms of yields under stress. In the present study, HUW-234 x HUW-468 derived wheat RIL mapping population was used to validate the usefulness of such a modified index. The correlation coefficient between the index score and their original index values were negative for SSI (Stress Susceptibility Index) and TOL (Tolerance Index) and positive for MP (Mean Productivity), GMP (Geometric Mean Productivity) and STI (Stress Tolerance Index). Based on index scores, d two new indices namely YPSI (Yield Production Score Index) and YSSI (Yield Stress Score Index) were created by combining score indices. Using these indices, the RILs could be effectively classified into four stress response classes. Most of the genotypes fall in Class II, III and IV. As such, it is highly imperative to identify highly resilient (Class III) and productive genotypes (Class II) for planned crossing. Based on the results of present and earlier studies, it is proposed that the new indices YPSI and YSSI can be effectively used for evaluating large genotype sets in diverse environments for stress response.
format	article
author	Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1
author_facet	Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1
author_sort	Parvaze A. Sofi1*, Sadiah Shafi1, Bikram Singh2, J. P. Jaiswal3, V. K. Mishra4, M. and R. R. Mir1
title	Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
title_short	Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
title_full	Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
title_fullStr	Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
title_full_unstemmed	Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress
title_sort	combined selection for productivity and resilience through modified stress tolerance indices in a huw-234 x huw-468 derived wheat (triticum aestivum l.) ril mapping population for heat stress
publisher	Indian Society of Plant Breeders
publishDate	2021
url	https://doaj.org/article/3672c782848d4c3caf421aba74bab069
work_keys_str_mv	AT parvazeasofi1sadiahshafi1bikramsingh2jpjaiswal3vkmishra4mandrrmir1 combinedselectionforproductivityandresiliencethroughmodifiedstresstoleranceindicesinahuw234xhuw468derivedwheattriticumaestivumlrilmappingpopulationforheatstress
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Combined selection for productivity and resilience through modified stress tolerance indices in a HUW-234 X HUW-468 derived wheat (Triticum aestivum L.) RIL mapping population for heat stress

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