GENETIC PARAMETERS OF YIELD IN M3 AND M4 GENERATIONS OF RICE (Oryza sativa L.)

C.R. ANANDAKUMAR and V.D. GURUSAMY RAJA

doi:https://doi.org/10.29321/MAJ.10.A01703

Madras Agricultural Journal

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GENETIC PARAMETERS OF YIELD IN M3 AND M4 GENERATIONS OF RICE (Oryza sativa L.)

Author: C.R. ANANDAKUMAR and V.D. GURUSAMY RAJA,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 80, Issue: nov-nov,

DOI:https://doi.org/10.29321/MAJ.10.A01703

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Abstract

Mutagenesis in Co 37 variety of rice was induced with gamma rays and Ethyl Methane Sulphonate. Polygenic variability was studied in M3 and M4 generations. The mean showed a declining trend with the increasing doses of mutagens in both viz., M3 and M4 generations. The phenotypic and genotypic variances and its co-efficient of variation for the yield were reduced in M4 compared to M3 If the selection pressure applied at the lower doses of 10 mm EMS and 25 or 30 KR of gamma rays found to throw economic mutants.

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