Disease resistance in crops is obtained by:

Consider the following four statements $(a-d)$ regarding the successful cultivation of chickpea in an area where bacterial blight is common:
$(a)$ Spraying of Bordeaux mixture.
$(b)$ Control of the disease vector.
$(c)$ Use of disease-free seeds.
$(d)$ Use of disease-resistant varieties.
Which of the above are the most effective strategies for managing this disease?

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

Which part of plant breeding is considered an art?

Varieties developed by the pureline method are

Select the correct option for Parbhani Kranti.