Figure 2.

Improvement of agronomic traits using traditional breeding and chemical or physical mutagenic approaches. (A) Improving a trait (e.g., disease resistance) by the traditional breeding and for the introduction of the desired donor trait into the ‘chosen’ recipient line by selecting the progeny with the desired traits from the recipient line and crossing it with the donor line. (B) This process uses chemical or physical mutagens to generate mutants via random mutagenesis.