International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Bud sports in the popular mulberry cultivar, Victory-1 and their characteristics

  • R. Ravi Kumara (CSB - Muga P-3 Seed Station) ;
  • G. P. Mohan Kumar (Flower and Medicinal Crops Division, ICAR- Indian Institute of Horticultural Research)
  • Received : 2023.12.10
  • Accepted : 2024.03.31
  • Published : 2024.06.30
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Abstract

Bud sport (bud mutation) is a valuable source for existing new genotypes in mulberry (Morus spp.) as well as critical materials for studying the molecular mechanisms underlying essential traits. Thus, identification, collection, characterization, and conservation of such natural variants are prerequisites for enhancing the mulberry genetic resource in the germplasm. In this context, we identified and characterized three bud sports (VBS-1, VBS-2, and VBS-3) of a popular mulberry cultivar, Victory-1 (V-1). These bud sports are morphologically, anatomically, and genetically more distinct from their mother plant, Victory-1. Moreover, these bud sports display lower growth and yield potential. Furthermore, these showed remarkably lower 2C DNA contents of 0.74 pg (VBS-1), 0.78 pg (VBS-2), and 0.76 pg (VBS-3), when compared to their mother plant V-1 (2C = 0.81 pg). On the other hand, molecular characterization between the bud sports and their mother plant revealed the existence of genetic variation due to the natural bud mutation that occurred in the mulberry cultivar Victory-1.

Keywords

Acknowledgement

The authors wish to extend their heartfelt gratitude to the National Centre for Biological Sciences (NCBS), Bengaluru, for providing Flow cytometry facilities. Likewise, to the sericulture farmers who supported us during the survey period.

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