List three researchers who were pioneers in auxin research and list their contributions
What will be an ideal response?
• Darwin described the effects of light on the movement of coleoptiles and suggested
that auxins were involved.
• Went in 1928 developed a method for the quantification of plant hormones present
in a sample, which was called the Avena curvature bioassay.
• Kogel and coworkers in 1934 were the first to purify heteroauxin (other auxin) from
human urine.
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