Which of the following statements is consistent with obtaining a progeny with genetic variation?

In crop improvement programmes,haploids are important because they:

Why does the sawfly not select wheat?

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

$A$ man-made allopolyploid cereal crop is:

The term "pureline selection" was first proposed by