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International Journal of Plant Breeding and Genetics
  Year: 2011 | Volume: 5 | Issue: 3 | Page No.: 246-254
DOI: 10.3923/ijpbg.2011.246.254
 
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Interrelationship and Cause-effect Analysis among Morpho-physiological Traits in Biroin Rice of Bangladesh

M.Z. Ullah, M.K. Bashar, M.S.R. Bhuiyan, M. Khalequzzaman and M.J. Hasan

Abstract:
The aim of this study was to find out genetic variability, interrelationship and cause effect analysis for morpho-physiological traits in Biroin rice varieties. Ten traditional fine Biroin rice cultivars were tested at research plot of Bangladesh Rice Research Institute, Gazipur, Bangladesh in Randomized Complete Block Design (RCBD) with three replications during Transplanting Aman season 2004. Statistically, significant variation was observed among tested materials for all the characters studied. The higher genotypic coefficient of variations was found in case of grains per panicle followed by grain yield/plant, 1000-grain weight and panicles per plant. High heritability was observed for all the tested characters except harvest index. High heritability with high genetic advance in percentage of mean was recorded for the characters grains per panicle, grain yield per plant and 1000-grain weight indicating role of additive gene action in the expression of these traits. Genotypic correlations were higher than the phenotypic correlations in most of the cases. Grains per panicle, panicle length, leaf area index, harvest index and chlorophyll content were the major characters contributing to grain yield as these traits were significantly and positively associated with grain yield per plant. Maximum contribution of more chlorophyll content to grain yield was observed in path analysis, which was followed by higher harvest index and grains per panicle through higher direct effect. Leaf area index, panicle length, days to maturity, grains per panicle, harvest index, 1000-grain weight and plant height had positive but indirect effect on grain yield through chlorophyll content. Similar trends were also observed in harvest index through leaf area index, panicles per plant, days to flowering, grains per panicle, chlorophyll content and panicle length. So for increasing grain yield per plant a Biroin rice cultivar should have more number of grains per panicle, large panicle length, high harvest index, high leaf area index value and more chlorophyll content.
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How to cite this article:

M.Z. Ullah, M.K. Bashar, M.S.R. Bhuiyan, M. Khalequzzaman and M.J. Hasan, 2011. Interrelationship and Cause-effect Analysis among Morpho-physiological Traits in Biroin Rice of Bangladesh. International Journal of Plant Breeding and Genetics, 5: 246-254.

DOI: 10.3923/ijpbg.2011.246.254

URL: https://scialert.net/abstract/?doi=ijpbg.2011.246.254

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