"Jaya" and "Ratna" developed for the Green Revolution in India are varieties of

In India,the high-yielding varieties of $Jaya$ and $Ratna$ belong to which of the following?

Which radiations are primarily used to induce mutations in crops?

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

Green manures are prepared from

The steps of a plant breeding program are given below. Arrange them in the correct sequence.
$(a)$ Cross-hybridization among the selected parents
$(b)$ Testing,release,and commercialization of new cultivars
$(c)$ Collection of variability
$(d)$ Selection and testing of superior recombinants
$(e)$ Evaluation and selection of parents