Name the scientist who first of all develop semidwarf variety of wheat

Who developed semi-dwarf varieties of wheat?

Who developed the semi dwarf variety of wheat?

Name the scientist who first isolated benzene.

An example for semidwarf variety of wheat is

Name the scientist who developed the pH scale.

Name the scientist who developed some new varieties of wheat in Mexico.

Name the scientist who developed some new varieties of wheat in Mexico.

Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.