Specific Combining Ability

What is Specific Combining Ability? – Definition

Specific combining ability is a performance of a parent under consideration, in a specific cross.

Features of Specific Combining Ability

  • It represents deviation from gca.
  • It is due to dominance genetic variance and all the three types of gene interactions
  • Helps into identification and hence selection of best cross combinations i.e. those with the desired output.
  • When we see that a inbred line combines well in any cross, it is due to specific combining ability.
  • Estimated by full sib mating
  • Have relationship with heterosis

Read general combining ability another type in the concept.