Triticale is obtained by crossing wheat with:

Which one of the following agents is used to induce mutation in higher plants?

What is observed in improved varieties obtained through plant breeding methods?

What are hybrid plants generally like?

The conventional method of breeding for resistance includes:
$I$. Screening the germplasm for resistant sources
$II$. Hybridization of selected parents
$III$. Selection and evaluation of the hybrids
$IV$. Testing and release of new varieties
Choose the correct option.

Hybrid vigour is mostly due to