Heterosis studies for grain yield and yield attributes in rice (Oryza sativa. L) hybrids

doi:10.37992/2023.1401.036

EJPB

2023

DOI: 10.37992/2023.1401.036

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Heterosis studies for grain yield and yield attributes in rice (Oryza sativa. L) hybrids

Abstract: In the current study, 20 elite rice genotypes were crossed with four CMS lines-CMS 23A, CMS 59A, CMS 64A and JMS 13A in a line x tester mating design and assessed alongside standard controls (JKRH 3333 and MTU 1001) to determine the best heterotic combinations in terms of grain yield and yield component characters at the Rice Research Centre, Rajendranagar. Eight restorer lines were found in

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2024

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Heterosis studies and molecular characterization of three-line rice hybrids

Kumar,

Kant,

Vennela

et al. 2024

ECJ

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The present investigation was undertaken at the Hybrid Rice plot of TCA, Dholi, and Muzaffarpur, and molecular analysis was conducted in the Molecular Laboratory of Postgraduate Dept. of Genetics & Plant Breeding, RPCAU, and Bihar to generate heterosis studies for 18 traits and molecular characterization using SSR markers. The experimental material comprised 31 three-line rice hybrids and 3 commercial checks evaluated in the RBD design. Among the tested varieties, Rajendra Sweta performed best in terms of grain yield per plant. Two rice hybrid genotypes, namely, IR68897A × KMR-3R and Rajendra-3A × RRR–4, exhibited superior standard heterosis over all three tests for trait grain yield per plant. By utilizing 12 primer pairs, a total of 33 shared alleles and 13 unique alleles were produced as amplified products. Among the 12 primers, seven primers were found to be comparatively informative for all nineteen hybrids and eleven parents. Only five primers, namely, MRG2894, RM515, RM520, RM538, and RM555, were able to confirm the hybridity (F1) with the respective parental lines.

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Heterosis studies and molecular characterization of three-line rice hybrids

Kumar,

Kant,

Vennela

et al. 2024

ECJ

View full text Add to dashboard Cite

show abstract

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Heterosis studies for grain yield and yield attributes in rice (Oryza sativa. L) hybrids

Cited by 1 publication

References 10 publications

Heterosis studies and molecular characterization of three-line rice hybrids

Heterosis studies and molecular characterization of three-line rice hybrids

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