REACTION OF F1 HYBRIDS TO RICE BLAST (Pyricularia oryzae Cavara) RESISTANCE

P. Vivekanandan; T.B. Ranganathan and M. Kadambavanasundaram

doi:https://doi.org/10.29321/MAJ.10.A01925

Madras Agricultural Journal

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REACTION OF F1 HYBRIDS TO RICE BLAST (Pyricularia oryzae Cavara) RESISTANCE

Author: P. Vivekanandan, T.B. Ranganathan and M. Kadambavanasundaram,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 77, Issue: feb-feb,

DOI:https://doi.org/10.29321/MAJ.10.A01925

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Abstract

The reaction of six F, hybrids for leaf and neck blast (Pyricularia oryzae Cavara) Involving TKM 9, CO 29, IR 36 and IR 50 was studied. The F1 hybrids showed grades towards susceptibility for leaf blast, indicating the dominance of susceptibility over resistance. In the case of TKM 9/IR 50 and its reciprocal, the high heterotic vigour towards resistance indicated the possibility to exploit them to obtain desirable blast resistant segregants.

Keywords: Rice, Disease resistance, Blast.

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