Haploid plants are very important in crop improvement programs because .....

Match the crop variety with its respective disease resistance:

List-$I$ (Crop Variety)	List-$II$ (Disease Resistance)
$(a)$ Himgiri	$(1)$ White rust
$(b)$ Pusa Komal	$(2)$ Black rot
$(c)$ Pusa Snowball $K-1$	$(3)$ Bacterial blight
$(d)$ Pusa Swarnim
	$(4)$ Hill bunt

Triticale is the hybrid between wheat and

Fill in the blanks in the following statements ($A$ to $C$):
$(A)$ The capacity to generate a whole plant from any cell/explant is called ......$(i)$ .......
$(B)$ The transfer of resistance genes occurs through ........$(ii)$........ . Subsequently,........$(iii)$ ....... occurs between the target and the plant source.
$(C)$ The rice variety $IR8$ was developed in the country ........$(iv)$ ........

The germplasm collections are usually maintained at a $A$ temperature in the form of $B$. Here $A$ and $B$ refer to:

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