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Study of Heritability and Gene Action Using CMS Line in Hybrid Rice (Oryza sativa L.)


Affiliations
1 Department of Genetics and Plant Breeding, Pilikothi Farm of Tilak Dhari Post Graduate College, Jaunpur (U.P.), India
     

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The low heritability (h2ns ) estimate was observed with grain yield plant-1 and test weight indicating a preponderance of non-additive gene action to govern these traits. Combining ability revealed higher specific combining ability variance than their respective general combining ability variances indicating the predominance of non-additive gene effects indicated the relevance of heterosis breeding for improving the yield and yield contributing attributes.

Keywords

Heterosis, Combining Ability, Line X Tester, Rice Hybrids.
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  • Study of Heritability and Gene Action Using CMS Line in Hybrid Rice (Oryza sativa L.)

Abstract Views: 26  |  PDF Views: 1

Authors

Sujeet Kumar
Department of Genetics and Plant Breeding, Pilikothi Farm of Tilak Dhari Post Graduate College, Jaunpur (U.P.), India
Alok Kumar Singh
Department of Genetics and Plant Breeding, Pilikothi Farm of Tilak Dhari Post Graduate College, Jaunpur (U.P.), India

Abstract


The low heritability (h2ns ) estimate was observed with grain yield plant-1 and test weight indicating a preponderance of non-additive gene action to govern these traits. Combining ability revealed higher specific combining ability variance than their respective general combining ability variances indicating the predominance of non-additive gene effects indicated the relevance of heterosis breeding for improving the yield and yield contributing attributes.

Keywords


Heterosis, Combining Ability, Line X Tester, Rice Hybrids.

References