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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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