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Study of Genetic Parameters and Character Association of Different Agro-Morphological Characters in some Paddy Genotypes for Saline and Non-Saline Belts of West Bengal, India

Author Affiliations

  • 1Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, 51/2Hazra Road, Kolkata- 700019, INDIA
  • 2Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, 51/2Hazra Road, Kolkata- 700019, INDIA
  • 3Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, 51/2Hazra Road, Kolkata- 700019, INDIA

Res. J. Agriculture & Forestry Sci., Volume 3, Issue (5), Pages 6-15, May,8 (2015)

Abstract

The aim of this experiment was to estimate the phenotypic and genotypic coefficients of variation, broad sense heritability, genetic advance and correlations in some paddy genotypes for both saline and non-saline location. For this purpose field trial was conducted in two zones non-saline and saline with forty three paddy genotypes for three consecutive years. At maturity eight agro-morphological characters were studied. After that the following statistical analyses were carried out. The GCV (Genotypic coefficient of variation), PCV (Phenotypic coefficient of variation), heritability (H) in the broad sense, genetic advance (GA) and GA% of mean was calculated. Phenotypic and genotypic correlation coefficients were also estimated. High GCV, PCV, broad sense heritability and GA was obtained for two characters grains/ panicle and seed yield/plant for both the locations. For non-saline zone (genotypic) seed yield/ plant was significantly associated with plant height, panicles/ plant, grains/ panicle and days to maturity and for the saline zone it was plant height, tillers/ plant, panicles/ plant, grains/ panicle, panicle length, 1000 seed weight and days to maturity. Thus there was a change under the saline conditions. More number of characters influence seed yield under the saline stress as seed yield per plant was directly associated with all the other seven characters present. Both under phenotypic and genotypic level plant height, number of grains per panicle, panicles per plant and days to maturity continue to register significant correlation with seed yield per plant. Tillers per hill and panicles per plant as well as grains per panicle and days to maturity gave significant and consistent inter relationship. Therefore, the results suggest tillers/ hill can be considered to be an important yield contributing trait along with panicles/ plant, grains/ panicle, plant height and days to maturity. Selection based on these traits would be most effective even under saline conditions.

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