Question

First natural cytokinin zeatin was discovered by

Answer 1

Explanation:

In searching for naturally occurring cytokinins in plant tissues, Letham in 1963 isolated acytokinin, zeatin, from immature corn kernels. A “kinetin-like” factor isolated by Miller in 1961 was later also identified as zeatin. Many phenylurea-derivatives have been shown to havecytokinin-like activity.

Answer 2

Explanation:

In searching for naturally occurring cytokinins in plant tissues, Letham in 1963 isolated a cytokinin, zeatin, from immature corn kernels. A “kinetin-like” factor isolated by Miller in 1961 was later also identified as zeatin. Many phenylurea-derivatives have been shown to have cytokinin-like activity.