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

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 source plant.
$(C)$ The rice variety $IR8$ was developed in the country ........$(iv)$ .

Several South Indian states raise $2-3$ crops of rice annually. The agronomic feature that makes this possible is

The name of $Norman$ $Borlaug$ is associated with ..........

$A$ collection of plants and seeds having diverse alleles of all the genes of a crop is called:

Which method is used to develop all the cultivated varieties of sugarcane?