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Control of Sexuality by Sk1 Gene

Control of Sexuality by Sk1 Gene

Genotype independent hybrid cereals

The Silkless gene Sk1 is a maize sex determination gene, the first single gain-of-function gene known to control survival of functional pistils. It enables production of unisexual flowers (either staminate or pistillate on separate plants) in cereal crops.

  • Lower cost of development for hybrid seed through outcrossing of unisexual plants. Only one generation of gene-editing per inbred, instead of 6-8.
  • More efficient production of hybrid seed through wind pollination of unisexual flowers.
  • Profound implications for food security increasing crop yields by 20-40% without placing additional land under production.
  • Better abiotic stress resistance and disease resistance.
  • Limited only by resources vs. current hybrid sterility systems which are genotype and environment-dependent.