Combining ability analysis for yield and yield contributing traits in rice (<i>Oryza sativa</i> L.)

Deepika, C.; Gnanamalar, R. P.; Thangaraj, Kumarasamy; Revathy, N.

doi:10.5958/0975-928x.2019.00056.5

Cited by 2 publications

(2 citation statements)

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“…The variances due to general combining ability and specific combining ability revealed the predominance of non-additive gene action for days to 50% flowering, plant height, number of productive tillers per plant, panicle length, number of filled grains per panicle and grain yield per plant. These results are in accordance with Savita et al (2015), Satheesh Kumar et al (2016), Sudeepthi et al (2018) and Deepika et al (2019). The presence of higher magnitude of nonadditive gene action offers scope for exploiting hybrid vigour through heterosis breeding.…”

Section: Resultssupporting

confidence: 90%

Assessment of combining ability and heterosis in rice (Oryza sativa L.) under irrigated ecosystem

Parimala¹,

Raju²,

Kumar³

2022

EEC

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The study was carried out to estimate the combining ability and heterosis for grain yield and its components in rice hybrids. Crosses were effected in line x tester design by using four CMS lines and five restorers as testers and produced twenty hybrids. Analysis of variance for combining ability revealed that variances of SCA were higher than the GCA variances for the traits studied except for 1000 grain weight and spikelet fertility (%) which indicated the predominance of non-additive gene action in the inheritance of traits. The line IR-68897A and the testers IR-79597-56-1-2-1 and WGL-347 were found to be promising general combiners for grain yield per plant and some of its attributes. Estimation of specific combining ability effects revealed that the crosses APMS-6A x IR-79597-56-1-2-1 and IR-79156A x IR-71218-93-1-4-3 had favourable genes for grain yield per plant. The cross IR-68897A x WGL-347 exhibited superior heterosis for number of productive tillers per plant, panicle length, number of filled grains per panicle, spikelet fertility and grain yield per plant over standard check. The cross combinations such as IR-79156A x IR-71218-93-1-4-3, IR-79156A x WGL-347, IR-68897A x IR-79597-56-1-2-1 and APMS-6A x IR-79597-56-1-2-1 showed positive significant heterosis for grain yield. Based on sca effect and standard heterosis the crosses IR-79156A x IR-71218-93-1-4-3 and APMS-6A x IR-79597-56-1-2-1 were found to be promising for grain yield and its components. Hence these cross combinations could be utilized for exploitation of heterosis in rice.

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Section: Resultssupporting

confidence: 90%

Assessment of combining ability and heterosis in rice (Oryza sativa L.) under irrigated ecosystem

Parimala¹,

Raju²,

Kumar³

2022

EEC

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“…This indicates the presence of dominance/additive type of gene action. Similarly the parents with high gca effects but with non significant per se performance are advocated for recombination breeding as reported bySuvathipriya and Kalaimagal (2018) andDeepika et al (2019). It was suggested that high per se performance of hybrids with non significant sca effect may be due to the positive or complementary interaction of the alleles.…”

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Study on combining ability of therapeutic traits in rice grains (Oryza sativa L.)

2022

EJPB

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Traditional rice varieties having high flavonoids and anthocyanin traits were hybridized to high-yielding quality cultivars to assess their combining ability. Significant variation was observed among parents and hybrids for the traits studied. The predominance of non-additive gene action was observed for single plant yield, total flavonoid content, amylose content, whereas, trait anthocyanin registered additive gene action in the study. The genotypes ADT 37 and ADT (R) 45 were found to be good general combiners for flavonoids and anthocyanin content. The hybrid ADT (R) 45 x IG6 exhibited significant sca for flavonoids, anthocyanin and amylose per cent. The hybrid ADT (R) 45 x Mikkuruvai exhibited significant per se and sca for single plant yield and flavonoid content.

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Combining ability analysis for yield and yield contributing traits in rice (Oryza sativa L.)

Cited by 2 publications

References 0 publications

Assessment of combining ability and heterosis in rice (Oryza sativa L.) under irrigated ecosystem

Assessment of combining ability and heterosis in rice (Oryza sativa L.) under irrigated ecosystem

Study on combining ability of therapeutic traits in rice grains (Oryza sativa L.)

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