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Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice

The exploitation of heterosis through intersubspecific hybridisation between indica and japonica has been a major breeding target in rice, but is marred by the cross incompatibility between the genomes. Wide compatibility (WC) is a triallelic system at the S5 locus on chromosome 6 that ensures the s...

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Autores principales: Kallugudi, Jayanth, Singh, Vikram Jeet, Vinod, Kunnumal Kurungara, Krishnan, Subbaiyan Gopala, Nandakumar, Shekharappa, Dixit, Brijesh Kumar, Ellur, Ranjith Kumar, Bollinedi, Haritha, Nagarajan, Mariappan, Kumar, Amit, Chakraborti, Mridul, Seth, Rakesh Kumar, Mondal, Tapan Kumar, Bhowmick, Prolay Kumar, Singh, Ashok Kumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9332614/
https://www.ncbi.nlm.nih.gov/pubmed/35893634
http://dx.doi.org/10.3390/plants11151930
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author Kallugudi, Jayanth
Singh, Vikram Jeet
Vinod, Kunnumal Kurungara
Krishnan, Subbaiyan Gopala
Nandakumar, Shekharappa
Dixit, Brijesh Kumar
Ellur, Ranjith Kumar
Bollinedi, Haritha
Nagarajan, Mariappan
Kumar, Amit
Chakraborti, Mridul
Seth, Rakesh Kumar
Mondal, Tapan Kumar
Bhowmick, Prolay Kumar
Singh, Ashok Kumar
author_facet Kallugudi, Jayanth
Singh, Vikram Jeet
Vinod, Kunnumal Kurungara
Krishnan, Subbaiyan Gopala
Nandakumar, Shekharappa
Dixit, Brijesh Kumar
Ellur, Ranjith Kumar
Bollinedi, Haritha
Nagarajan, Mariappan
Kumar, Amit
Chakraborti, Mridul
Seth, Rakesh Kumar
Mondal, Tapan Kumar
Bhowmick, Prolay Kumar
Singh, Ashok Kumar
author_sort Kallugudi, Jayanth
collection PubMed
description The exploitation of heterosis through intersubspecific hybridisation between indica and japonica has been a major breeding target in rice, but is marred by the cross incompatibility between the genomes. Wide compatibility (WC) is a triallelic system at the S5 locus on chromosome 6 that ensures the specificity of hybridisation within and between indica and japonica. The S5n allele that favours intercrossing is sparsely distributed in the rice gene pool and therefore warrants identification of diverse WC sources to develop superior intersubspecific hybrids. In this study, we have identified several novel WC sources through the marker-assisted screening of a large set of 950 rice genotypes. Seventeen percent of the genotypes carried S5n, which fell into two subpopulations. The WC genotypes showed wide phenotypic and genotypic variability, including both indica and japonica lines. Based on phenotypic performance, the WC varieties were grouped into three clusters. A subset of 41 WC varieties was used to develop 164 hybrids, of which WC/japonica hybrids showed relative superiority over WC/indica hybrids. The multilocation evaluation of hybrids indicated that hybrids derived from WC varieties, such as IRG137, IRG143, OYR128, and IRGC10658, were higher yielding across all the three different locations. Most of the hybrids showed the stability of performance across locations. The identified diverse set of wide compatible varieties (WCVs) can be used in the development of intersubspecific hybrids and also for parental line development in hybrid rice breeding.
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spelling pubmed-93326142022-07-29 Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice Kallugudi, Jayanth Singh, Vikram Jeet Vinod, Kunnumal Kurungara Krishnan, Subbaiyan Gopala Nandakumar, Shekharappa Dixit, Brijesh Kumar Ellur, Ranjith Kumar Bollinedi, Haritha Nagarajan, Mariappan Kumar, Amit Chakraborti, Mridul Seth, Rakesh Kumar Mondal, Tapan Kumar Bhowmick, Prolay Kumar Singh, Ashok Kumar Plants (Basel) Article The exploitation of heterosis through intersubspecific hybridisation between indica and japonica has been a major breeding target in rice, but is marred by the cross incompatibility between the genomes. Wide compatibility (WC) is a triallelic system at the S5 locus on chromosome 6 that ensures the specificity of hybridisation within and between indica and japonica. The S5n allele that favours intercrossing is sparsely distributed in the rice gene pool and therefore warrants identification of diverse WC sources to develop superior intersubspecific hybrids. In this study, we have identified several novel WC sources through the marker-assisted screening of a large set of 950 rice genotypes. Seventeen percent of the genotypes carried S5n, which fell into two subpopulations. The WC genotypes showed wide phenotypic and genotypic variability, including both indica and japonica lines. Based on phenotypic performance, the WC varieties were grouped into three clusters. A subset of 41 WC varieties was used to develop 164 hybrids, of which WC/japonica hybrids showed relative superiority over WC/indica hybrids. The multilocation evaluation of hybrids indicated that hybrids derived from WC varieties, such as IRG137, IRG143, OYR128, and IRGC10658, were higher yielding across all the three different locations. Most of the hybrids showed the stability of performance across locations. The identified diverse set of wide compatible varieties (WCVs) can be used in the development of intersubspecific hybrids and also for parental line development in hybrid rice breeding. MDPI 2022-07-26 /pmc/articles/PMC9332614/ /pubmed/35893634 http://dx.doi.org/10.3390/plants11151930 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kallugudi, Jayanth
Singh, Vikram Jeet
Vinod, Kunnumal Kurungara
Krishnan, Subbaiyan Gopala
Nandakumar, Shekharappa
Dixit, Brijesh Kumar
Ellur, Ranjith Kumar
Bollinedi, Haritha
Nagarajan, Mariappan
Kumar, Amit
Chakraborti, Mridul
Seth, Rakesh Kumar
Mondal, Tapan Kumar
Bhowmick, Prolay Kumar
Singh, Ashok Kumar
Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title_full Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title_fullStr Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title_full_unstemmed Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title_short Population Dynamics of Wide Compatibility System and Evaluation of Intersubspecific Hybrids by indica-japonica Hybridization in Rice
title_sort population dynamics of wide compatibility system and evaluation of intersubspecific hybrids by indica-japonica hybridization in rice
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9332614/
https://www.ncbi.nlm.nih.gov/pubmed/35893634
http://dx.doi.org/10.3390/plants11151930
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