Heterosis and combining ability for yield and yield attributing traits in rice

Ambikabathy, A.; Banumathy, S.; Gnanamalar, R. P.; Arunchalam, P.; Jeyaprakash, P.; Amutha, R.; Venkatraman, N.

doi:10.5958/0975-928x.2019.00135.2

Cited by 8 publications

(11 citation statements)

References 5 publications

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“…K 2 GCA / K 2 SCA ratio was more than unity for the studied traits, indicating the importance of additive gene effects in the expression of these traits. Those results are in harmonically with that observed by Sanghera and Hussain (2013), Ali et al, (2014), Upadhyay and Jaiswal (2015) and Ambikabathy et al, (2019). Therefore, the selection procedures based on the accumulation of additive effect would be successful in improving grain yield and its contributing traits, Awad-Allah et al, (2015) and Ambikabathy et al, (2019) reported the importance of additive gene effects in the expression of grain yield, panicles plant -1 , filled grains panicle -1 , days to 50 % heading, spikelets panicle -1 and spikelet fertility percentage.…”

Section: Analysis Of Variance and Gene Actionsupporting

confidence: 91%

“…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: 85%

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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: 91%

Section: Analysis Of Variance and Gene Actionsupporting

confidence: 85%

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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“…Thus offering scope for heterosis breeding by exploiting hybrid vigor. The present findings were in conformation with earlier findings of Bineenta Devi and Lal (2015), Ambikabathy et al(2019) and Mohanasundaram et al(2019). The proportional contribution to the total variance by lines, testers and interactions revealed that the testers and line x testers interaction have contributed more than lines for all the characters except for days to 50 percent flowering, plant height and breadth of flag leaf (table 4).…”

Section: Resultssupporting

confidence: 94%

“…The best combiners Improved White Ponni, RG192, RG105 and RG163 could be utilized as parents in breeding gca effect indicating additive gene action. These findings were in agreement with the results of Batti et al(2015), Madhuri et al(2017), Sudeepthi et al(2018) and Ambikabathy et al(2019). *significant at 5 per cent interval **significant at 1 per cent interval programmes towards the development of high yielding varieties.…”

Section: Resultssupporting

confidence: 92%

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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“…For the traits such as single plant yield and number of productive tillers, significant positive heterosis had been obtained in the hybrids-1, ANNA (R) 4 × 3-11-11-1. These results are in agreement with the findings ofUtharasu and Anandakumar (2013),Vadivel et al (2018),Kour et al (2019) andAmbikabathy et al (2019) for yield contributing traits. The hybrids ADT 37× 3-11-11-2 and CB 12132 × 3-11-11-1 regarded promising hybrids in improving single plant yield.…”

supporting

confidence: 93%

Assessment of combining ability, gene action and heterosis for yield and grain characters in rice (Oryza sativa L.)

2021

EJPB

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Twenty four hybrids were tested along with eight lines and three testers for various yield and grain characters to understand the nature of gene action in the inheritance of various traits. gca/sca variance analysis exhibited the dominance of non-additive gene action for the traits viz., plant height, flag leaf length, flag leaf width, spikelet fertility, 1000 grain weight, single plant yield, grain length, grain breadth and L/B ratio. The lines ADT (R) 45, ADT 53, CO 54, ANNA (R) 4 and the testers 3-11-11-1 and 3-11-11-2 were determined to be good general combiners since they have contributed alleles with a positive effect on improving essential characters. The hybrids ADT (R) 45 × 3

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Heterosis and combining ability for yield and yield attributing traits in rice

Cited by 8 publications

References 5 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)

Assessment of combining ability, gene action and heterosis for yield and grain characters in rice (Oryza sativa L.)

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