What is $Triticum$ $aestivum$?

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.

The majority of high-yielding varieties of 'Indian rice' have been developed by crossing which of the following?

From which species was resistance against $Phytophthora$ in potato obtained?

In mutation breeding,mutations are induced by using chemicals like

When two genetically different individuals or lineages are crossed, the $F_1$ generation often displays superior traits compared to both parents. This phenomenon is called .....