Genetic divergence of aromatic rice (Oryza sativa L.)

Authors

  • Ratna Rani Majumder Biotechnology Division, Bangladesh Rice Research Institute, Gazipur-1701,
  • Ripon Kumar Roy Biotechnology Division, Bangladesh Rice Research Institute, Gazipur-1701
  • MA Khaleque Mian Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706
  • Nasrin Akter Ivy Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706

DOI:

https://doi.org/10.3329/bjb.v44i2.38506

Keywords:

Genetic diversity, D2 analysis, Cluster analysis, Rice (Oryza sativa L.)

Abstract

Thirty aromatic rice genotypes were studied to assess the nature and magnitude of genetic divergence among them for grain yield and yield contributing characters. Based on 23 characters the genotypes were grouped into 5 clusters. Inter-distances were higher than intra-cluster showing a wide range of genetic diversity among the genotypes of different groups. The highest level of inter-cluster distance (73.48) was found between cluster IV and V. The highest intra-cluster distance (3.364) was computed to cluster V and the lowest 1.851 was observed in cluster IV. Panicle length, days to initial flower opening, spikelet sterility, pollen fertility and harvest index had maximum contribution towards genetic divergence of 30 aromatic rice genotypes. Genotypes having these characters in the genetically distant cluster could, therefore, offer a significant scope for the development of high yielding variety through judicious selection.

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Published

2018-10-13

How to Cite

Majumder, R. R., Roy, R. K., Mian, M. K., & Ivy, N. A. (2018). Genetic divergence of aromatic rice (Oryza sativa L.). Bangladesh Journal of Botany, 44(2), 185–191. https://doi.org/10.3329/bjb.v44i2.38506

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Articles