International Journal of Plant Sciences

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Heterosis for Yield Components in Rice (Oryza sativa L.)


Affiliations
1 Department of Genetics and Plant Breeding (Agricutural Botany), Udai Pratap Autonomous College, Varanasi (U.P.), India
     

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Heterosis was estimated as per cent increase or decrease of F1 values over either heterobeltiosis and over best variety Sarjoo 52. The relative magnitude of heterosis over better parent and standard variety has been studied for ten characters in twenty four hybrids. The nature and magnitude of heterosis differ from character to character depend upon hybrid combinations. Out of 24 F1s fifteen and eleven hybrid exhibited significant positive heserosis over better parent and standard variety for grain yield. The cross IR 58025 A x NDRK 5026 (BP) and PMS 10 A x Swarna (SV) were best hybrids.

Keywords

Heterobeltiosis, Rice, Hybrid Yield.
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  • Heterosis for Yield Components in Rice (Oryza sativa L.)

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Authors

S. B. Verma
Department of Genetics and Plant Breeding (Agricutural Botany), Udai Pratap Autonomous College, Varanasi (U.P.), India

Abstract


Heterosis was estimated as per cent increase or decrease of F1 values over either heterobeltiosis and over best variety Sarjoo 52. The relative magnitude of heterosis over better parent and standard variety has been studied for ten characters in twenty four hybrids. The nature and magnitude of heterosis differ from character to character depend upon hybrid combinations. Out of 24 F1s fifteen and eleven hybrid exhibited significant positive heserosis over better parent and standard variety for grain yield. The cross IR 58025 A x NDRK 5026 (BP) and PMS 10 A x Swarna (SV) were best hybrids.

Keywords


Heterobeltiosis, Rice, Hybrid Yield.

References