When comparing the effects of growth regulators on the growth of etiolated plant sections it is desirable to measure not only the final lengths reached after some period of time, but also the rate of growth during that time. This problem has been approached in three ways.
Proceedings of the Iowa Academy of Science
©1956 Iowa Academy of Science, Inc.
Michel, B. E.
"A Photographic Technique for Measuring Plant Section Growth,"
Proceedings of the Iowa Academy of Science, 63(1), 287-291.
Available at: https://scholarworks.uni.edu/pias/vol63/iss1/24