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

Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.

The new varieties of plants are produced by

Briefly describe various steps involved in plant breeding.

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

Which of the following is commonly used to induce mutations in cereals?