Studies on combining ability and heterosis in rice (<i>Oryza sativa</i> L.)

Vadivel, K.; Vasline, Y. A.; Saravanan, K.

doi:10.5958/0975-928x.2018.00139.4

Cited by 7 publications

(8 citation statements)

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“…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%

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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: General Combining Ability Effectssupporting

confidence: 64%

“…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: 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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“…The genotypes, TKM 13, CO 52, ADT 52 and IRBB 21 showing high gca effects for single plant yield can be used for pedigree breeding to obtain superior recombinants. The present findings are also in accordance with the results of Vadivel et al (2018), Singh et.al. (2020 and Nanditha et al (2021).…”

Section: Resultssupporting

confidence: 94%

Combining ability and heterosis for yield and grain quality characters in rice (Oryza sativa L.)

2022

EJPB

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Twelve F 1 crosses derived from four lines and three testers, crossed in L x T mating design were utilized to estimate the combining ability and heterosis for 17 yield and grain quality traits and also to detect the superior crosses for the breeding program. Analysis of variance showed significant differences among all the traits under study except for plant height in lines. In the case of testers, the traits viz., the number of tillers per plant, the number of productive tillers per plant, hundred seed weight, single plant yield, alkali spreading value, amylose content, gel consistency, kernel length, kernel length breadth ratio, kernel length after cooking and kernel breadth after cooking showed significant values. The SCA variance was higher than the GCA variance for all the characters under study except the alkali spreading value indicating the predominance of non-additive gene action in the inheritance of all the characters. The parents TKM 13, CO 52, ADT 52 and IRBB 21 were adjudged as good general combiners with respect to single plant yield. Hence, these parents can be exploited through pedigree breeding to obtain better recombinants by selection in later generations. Based on the results of per se performance, standard heterosis, and sca effects, the hybrids viz., CO 52 × IRBB 60 and ADT 52 × IRBB 21 were identified as the best specific combiners and these could be used for future breeding.

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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%

“…Hence the hybrids obtained from these crosses can be forwarded to further generations for improving desired traits. The present findings are also in accordance with the results ofSuvathipriya et al (2018),Ambikabathy et al (2019) andVadivel et al (2018).…”

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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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Studies on combining ability and heterosis in rice (Oryza sativa L.)

Cited by 7 publications

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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 heterosis for yield and grain quality characters 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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