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Rht14 & Rht18: Dwarfing genes in wheat mapped

  • IASbaba
  • May 23, 2020
  • 0
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Rht14 & Rht18: Dwarfing genes in wheat mapped

Part of: GS-Prelims and GS-III – Science & Technology

In News:

  • Scientists at Pune based Agharkar Research Institute (ARI) have mapped two alternative dwarfing genes Rht14 and Rht18 in wheat.
  • ARI is an autonomous institute of the Department of Science and Technology. 

Key takeaways 

  • These genes have better seedling vigour and longer coleoptiles (sheath protecting the young shoot tip).
  • Dwarfing genes were mapped on chromosome 6A in durum wheat. 
  • DNA-based markers were developed for a better selection of genes. 
  • Advantages of wheat lines having these genes are:
    • Suitable for sowing under rice stubble-retained conditions and dry environments.
    • Reduce crop residue burning
    • Allow deeper sowing of wheat seeds to avail advantage of residual moisture in the soil under dry environments. 

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