Genetics of wide compatible gene and variability studies in rice (Oryza sativa L.)

Revathi, S.; Sakthivel, K.; Manonmani, S.; Umadevi, M.; Ushakumari, R.; Robin, S.

doi:10.1007/s12041-016-0640-3

Cited by 8 publications

(8 citation statements)

References 10 publications

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“…These findings were similar with that of Vijay et al, (2015) for number of florets per plant. Similar findings were reported by Revathi et al, (2016) et al,(2017) for plant height, 1000 grain weight, it indicated the predominance of additive gene action for controlling these traits. Therefore, selection based on phenotypic performance would be effective for the improvement of these traits.…”

Section: Resultssupporting

confidence: 89%

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Variability and Heritability Studies in the Recombinant Inbred Lines (F8) of Langulmota/Sambamahsuri Derivatives of Rice (Oryza sativa L.)

Khan¹,

Senapati²,

Sangeeta³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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60% of the caloric intake of the three billion Asians (Guyer et al., 1998). It is primarily a high energy or high caloric food containing around 78.2% carbohydrates, 6.8% protein.Research efforts focused on development of high-yielding varieties and adoption of modern production technologies resulted in enhanced production leading to selfsufficiency in the country. Along with yield, grain and nutritional quality has also become a primary consideration in rice breeding

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Section: Resultssupporting

confidence: 89%

“…Lowest genetic advance was obtained against grain breadth followed by grain L/B ratio, kernel breadth, and kernel L/B ratio. Comparable results were obtained earlier, by Vijay et al, (2015) for number of florets per panicle, Revathi et al, (2016) for number of grains per panicle, and Anis et al, (2016) for plant height.…”

Section: Resultssupporting

confidence: 86%

Variability and Heritability Studies in the Recombinant Inbred Lines (F8) of Langulmota/Sambamahsuri Derivatives of Rice (Oryza sativa L.)

Khan¹,

Senapati²,

Sangeeta³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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“…Previous studies indicated that the wide compatibility among when crossed between the indica and japonica type giving higher fertility in F 1 crosses. Wide compatibility (WC) is one of the majority important traits in rice which can conquer the sterility barrier in the indica / japonica crosses, Revathi et al (2016). Ikehashi and Araki (1984) discovered a genetic tool, designated as wide compatibility gene (s), to conquer this hybrid sterility problem.…”

Section: Introductionmentioning

confidence: 99%

Improving Parental Lines for Hybrid Rice Development in Indica / Japonica Rice Crosses

Awad-Allah

2019

Journal of Agricultural Chemistry and Biotechnology

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The present study was done at the Experimental Farm of Sakha Agricultural Research Station, Kafr El-Sheikh, Egypt, during 2016 and 2017 seasons to study combining ability, gene action and heterosis for grain yield and some agronomic traits in some lines to be utilized in hybrid rice development. The experiment comprised 30 crosses derived from six varieties/lines namely; Dular, Jip 5, O2428, Nekken 1, Giza 181 and Giza 182. A complete diallel cross set was done among these six rice parents including reciprocals. General combining ability and specific combining ability were found to be highly significant for all studied traits. This indicated the importance of both additive and non-additive genetic variances in determining inheritance of grain yield and related traits. While, highly significant reciprocal effects were detected for most studied traits indicating presence of the maternal effects in controlling of studied traits except panicle length and panicle weight for these rice crosses. The ratio of GCA/SCA was more than unity for all studied traits, indicated the preponderance of additive gene effects in the expression of these traits. Rice varieties; Dular, O2428 and Nekken 1 showed highly spikelets fertility (> 70%) when they crossed with both japonica and indica cultivars indicated that these lines can be identified as wide compatible genotypes. Moreover, the three crosses of Nekken 1 X Giza 182, Giza 181 X Giza 182 and Nekken 1 X Giza 181 were the best specific combiner for grain yield.

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“…WCVs have been known for a long time to the rice breeders as genotypes that cross freely with both indica and japonica lines. Therefore, WC has been recognised as one of the key requirements to overcome the fertility barrier among intersubspecific hybrids [ 15 ]. Moreover, WCVs can act as potential donors for S5-n alleles, which can replace either S5-i or S5-j alleles in the parental stocks to generate potentially viable hybrids.…”

Section: Introductionmentioning

confidence: 99%

“…Among the subspecies of Oryza sativa , there is a third group of genotypes that were characteristically distinct from the major subtypes. Known previously as javanica types, and later as tropical japonica , these groups of genotypes show an intermediary behaviour between indica and japonica [ 15 ]. Most of these types are also characteristically cross compatible with both indica and japonica genotypes and are known to harbour WC alleles.…”

Section: Introductionmentioning

confidence: 99%

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

Kallugudi

Singh

Vinod

et al. 2022

Plants

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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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Genetics of wide compatible gene and variability studies in rice (Oryza sativa L.)

Cited by 8 publications

References 10 publications

Variability and Heritability Studies in the Recombinant Inbred Lines (F8) of Langulmota/Sambamahsuri Derivatives of Rice (Oryza sativa L.)

Variability and Heritability Studies in the Recombinant Inbred Lines (F8) of Langulmota/Sambamahsuri Derivatives of Rice (Oryza sativa L.)

Improving Parental Lines for Hybrid Rice Development in Indica / Japonica Rice Crosses

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

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