Discuss the two main limitations of plant hybridization programme.

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

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 ........$(iv)$ .

Resistance to ........ in bhindi ($Abelmoschus$ $esculentus$) was transferred from a wild species and resulted in a new variety of $A. esculentus$ called ........

When two genetically different individuals or lineages are crossed, the $F_1$ generation often displays superior traits compared to both parents. This phenomenon is called .....

Selection is the method of