Semi-dwarf rice varieties were developed from . . . . . . in Philippines.

Since the beginning of human civilization,plant breeding has been practiced in a traditional manner for thousands of years. Written evidence of this practice is still available from ...... years ago.

Explain: plant breeding.

Which semi-dwarf variety of plant was developed by Nobel laureate Norman $E$. Borlaug?

One of the popular methods employed in the production of new varieties of plants is

......... often becomes monotonous due to .........