Genetic evaluation of yield and yield attributing traits in rice (<i>Oryza sativa</i> L.) using line x tester analysis

Kour, Amardeep; Kumar, Bupesh; Singh, B. P.

doi:10.5958/0975-928x.2019.00005.x

Cited by 11 publications

(21 citation statements)

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“…Similarly, the results cleared that, the mean squares of the parents, crosses, parents Vs crosses, lines, testers and line x tester were highly significant for all the studied traits with some exception. Similar results were obtained by Ambikabathy et al, (2019), Awad-Allah ( 2019), Singh et al, (2019), Alok and Sujeet (2020), and Kumar et al, (2020 a). Estimation of ratio between K 2 GCA and K 2 SCA for grain yield and its contributing traits are illustrated in Table 3.…”

Section: Analysis Of Variance and Gene Actionsupporting

confidence: 86%

“…These genotypes could be good parental lines in rice crosses for improving maintainer lines, restorer lines, widely compatible restorer lines, widely compatible CMS lines and rice cultivars for grain yield plant -1 . Good general combiner for grain yield and yield contributing traits were also reported by Suvathipriya and Kalaimagal (2018), Vadivel et al, (2018), Kour et al, (2019) and Singh et al, (2019).…”

Section: General Combining Ability Effectssupporting

confidence: 64%

“…The crosses Norti X Dular (-10.69), Norti X Nekken 1 (-9.99), Norti X Gz 5934-7-2-3 (-9.93) and Gz 5121-5-2 X Dular (-9.63) recorded the highest MP heterosis estimates. Significant and highly significant desirable heterosis for days to 50% heading, also, was recorded by Yuga et al, (2018), Singh et al, (2019), Kumar et al, (2020 b) and Yadav et al, (2020).…”

Section: Estimation Of Heterosismentioning

confidence: 52%

“…Hence there is a possibility of selecting desirable progenies and fixing them in the early generations. Good general combiners for earliness were also reported by Vadivel et al, (2018) and Kour et al, (2019). Concerning plant height, the line O2428-P-7-7 showed highly significant desirable negative GCA effects (-1.4).…”

Section: General Combining Ability Effectsmentioning

confidence: 83%

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Heterosis and Combining ability Estimates using Line x Tester Analysis to Develop Wide Compatibility and Restorer Lines in Rice

Awad-Allah

2020

Journal of Agricultural Chemistry and Biotechnology

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during 2017 and 2018 seasons to study combining ability, gene action, heterosis, and degree of dominance for grain yield and its contributing traits in some wide compatibility lines. Eight genotypes included the three lines; O2428-P-7-7, Norti, Gz 5121-5-2 as female parents with five testers Dular, Nekken 1, Giza 178, Gz 5934-7-2-3 and IR 25571-31-1, are used in a line X testers cross. The analysis of variance revealed significant differences among parents, crosses and line x tester interaction for all studied traits except panicle weight in parents. The ratio of K 2 GCA / K 2 SCA was more than unity for all studied traits indicated preponderance of additive gene effects in the expression of these traits except panicle weight. Rice varieties; Dular and Nekken 1 can be identified as wide compatible lines. Most of F1 crosses showed significant values in the heterosis for all studied traits. The crosses Norti X Nekken 1 and Norti X Giza 178 showed the highest values for mean performance and the three types of heterosis for grain yield. In addition, the highest significant positive values of specific combining ability were shown in the four cross combinations O2428-P-7-7 X IR25571-31-1, Gz 5121-5-2 X Gz 5934-7-2-3, Gz 5121-5-2 X Dular and Norti X Giza 178. The results of this study indicate that the parental lines can be used for improvement and utilized in hybrid rice breeding program.

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Section: Analysis Of Variance and Gene Actionsupporting

confidence: 86%

Section: General Combining Ability Effectssupporting

confidence: 64%

Section: Estimation Of Heterosismentioning

confidence: 52%

Section: General Combining Ability Effectsmentioning

confidence: 83%

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Heterosis and Combining ability Estimates using Line x Tester Analysis to Develop Wide Compatibility and Restorer Lines in Rice

Awad-Allah

2020

Journal of Agricultural Chemistry and Biotechnology

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“…Hence these combiners could be utilized for developing promising and desirable hybrids (Table 5). Good general combiners for yield and yield attributing characters in rice were also reported by Suvathipriya and Kalaimagal (2018) and Kour et al,(2019). *significant at 5 per cent interval **significant at 1 per cent interval IW Ponni-Improved white ponni…”

Section: Resultsmentioning

confidence: 71%

Combining ability and gene action analysis for yield and yield attributing traits in rice (Oryza sativa.L)

AnandaLekshmi

Geetha²,

Amudha³

et al. 2020

EJPB

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Six lines and four testers were involved in the combining ability and gene action study in line x tester mating design to discern desirable general and specific combiner for breeding programme. The combining ability variance indicated that sca variance was higher than gca variance indicating the preponderance of non-additive gene action for the characters studied viz., days to 50 percent flowering, panicle length, plant height, the number of grains per panicle, the number of tillers per plant, the number of productive tillers per plant, flag leaf length, flag leaf breadth, spikelet fertility, test weight and single plant yield. Among the parents, Improved White Ponni, RG192, RG163 and RG105 were discovered as the best general combiners for single plant yield. The cross combinations viz., ADT37 X RG163, ADT43 X RG105, ADT45 X RG163, ADT(R)48 X RG105, CO51 X Kavuni and Improved White Ponni X RG192 were the ideal specific combiners for single plant yield. Therefore, the aforementioned cross combinations may be employed in the upcoming breeding programmes in order to develop a higher heterosis for yield.

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Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

Ariharasutharsan

Seshadri

Saraswathi

et al. 2023

Plants

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Rice is an important food crop extensively cultivated worldwide, and rice’s grain yield should be improved to meet future food demand. Grain number per panicle is the main trait that determines the grain yield in rice, and other panicle-related traits influence the grain number. To study the genetic diversity, 50 diverse Indian-origin germplasm were evaluated for grain number per panicle and other panicle traits for two consecutive seasons (Rabi 2019 and Kharif 2020). The maximum genotypic and phenotypic coefficient of variation was obtained for the number of spikelets and filled grains per panicle. The genotypes were grouped into eight clusters with Mahalanobis’ D2 analysis and six groups using Principal component analysis. Based on, per se, performance for grain number per panicle and genetic distances, six parents were selected and subjected to full diallel mating. The genotypes CB12132, IET 28749, and BPT 5204 were the best general combiners for the number of filled grains per panicle and other panicle branching traits, viz., the number of primary and secondary branches per panicle. The hybrid BPT 5204 × CB 12132 identified as the best specific combination for most of the studied panicle traits. The additive gene effects were high for the number of filled grains per panicle, the number of primary branches, and secondary branches, whereas non-additive gene action was high for the number of productive tillers and grain yield per plant. The information obtained from this study will be useful in rice breeding programs to improve panicle traits, especially the grain number, which would result in higher grain yield.

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Genetic evaluation of yield and yield attributing traits in rice (Oryza sativa L.) using line x tester analysis

Cited by 11 publications

References 0 publications

Heterosis and Combining ability Estimates using Line x Tester Analysis to Develop Wide Compatibility and Restorer Lines in Rice

Heterosis and Combining ability Estimates using Line x Tester Analysis to Develop Wide Compatibility and Restorer Lines in Rice

Combining ability and gene action analysis for yield and yield attributing traits in rice (Oryza sativa.L)

Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

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