Harnessing Genetic Diversity And Vigor Of Onion From Multi-generatio Study

Genetic diversity and hybrid vigor in onion

Authors

  • M A Alam Plant Breeding Division, Spices Research Centre, Bangladesh Agricultural Research Institute (BARI), Bogura
  • S Naher Soil Science Division, Spices Research Centre, BARI, Bogura
  • M M Hasan Horticulture Division, Spices Research Centre, BARI, Bogura
  • A H F Fahim Agronomy Division, Spices Research Centre, BARI, Bogura
  • M A A Khan Plant Breeding Division, Regional Spices Research Centre, BARI, Gazipur
  • M T Rahman Principal Librarian (Add. Charge) & Senior Assistant Director (Procurement), Support Service Unit
  • S N Mozumder Horticulture Division, Regional Spices Research Centre, BARI, Gazipur.

DOI:

https://doi.org/10.3329/bjagri.v49i2.79441

Keywords:

Bulb dimension, Genetic variation, Heterosis, Parental selection.

Abstract

This study investigates the genetic variation, vigor, and performance of onion generations resulting from crosses. The experiment was conducted at the Spices Research Centre, Shibganj, Bogura, during 2021-22, following diallel mating design with three parental varieties, BARI piaz1, BARI piaz4, and BARI piaz6. The research focuses on evaluating yield and yield-contributing traits, including bulb dimensions, bulbing index, and individual bulb weight. The results demonstrate significant genetic diversity among onion generations, offering opportunities for the breeders to select and develop superior lines. Hybrid vigor and heterosis, particularly evident in F1 generations, suggest that combining genetically diverse parental lines can lead to progeny with superior performance compared to their parents. However, the choice of parental lines significantly influences the stability and performance of hybrid progeny, with certain varieties demonstrating consistent performance across generations (Parent, F1, F2). Trait segregation and variability within F2 hybrid populations underscore the importance of evaluating large populations to identify individuals with desired trait combinations. Overall, the findings highlight the importance of leveraging genetic diversity and hybrid vigor in onion breeding programs to develop cultivars. By employing breeding strategies the high-performing onion varieties capable of thriving in diverse agro-climatic conditions in onion farming.

Bangladesh J. Agri. 2024, 49(2): 31-44

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Published

2025-02-02

How to Cite

Alam, M. A., Naher, S., Hasan, M. M., Fahim, A. H. F., Khan , M. A. A., Rahman, M. T., & Mozumder, S. N. (2025). Harnessing Genetic Diversity And Vigor Of Onion From Multi-generatio Study: Genetic diversity and hybrid vigor in onion. Bangladesh Journal of Agriculture, 49(2), 31–44. https://doi.org/10.3329/bjagri.v49i2.79441

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