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To H(2)O(2) or Not to H(2)O(2) for Better Seed Germination?

CSEF · 2006 Plant Biology

Andrew J. Khasigian · Sutter (John) Middle School, Fowler

Overview

Objectives/Goals Does the consentration and soaking period of hydrogen peroxide effect the germination time for a seed? Methods/Materials 1.Household Hydrogen Peroxide (H2O2) 3-5% concentration 2.Water (H2O) 3.Measuring cups 4.Strong cups to soak seeds in 5.Enough seeds with roughly same germination time and pick flowers or vegetables. Following seed types were used: a.Sunflower large seed b.Gypsophila small seed c.Marigold large seed d.Morning Glory large seed e.Bachlor Button large seed f.Snapdragon small seed g.Aster small seed 6.Planter box Results My expectations were that the solution with 50% water and 50% hydrogen peroxide and soaking the seeds would be the most effective. From the data no clear pattern could be seen. Snapdragons seeds seemed to germinate better with minimum soaking and with lower or no H202 in the soaking solution. Marigold seeds did better with longer soaking periods, and concentration of H202 did not seem to matter. Sunflower seeds needed longer soaking, and lower H202 concentrations. Morning glory much like Snapdragons preferred shorting soaking periods and lower concentrations of H202. Gysophia seeds were very sensitive to both soaking time and H202 concentrations. They germinated best with no H202 in the solutions, and other seeds germinating did better with shorter germination times. Aster seeds, did better at 12 hour soaking periods. They seemed to best with the lower concentrations of hydrogen peroxide. Bachelor Button, did better at a 12 hour soaking period, and in the presence of hydrogen peroxide. Seed size did not seem to matter. Large seeds and small seeds all seemed to germinate at different rates, regardless of soaking time or % hydrogen peroxide.

Summary statement

This project concerns the effects on seed germination, from being soaked in varying concentration of hydrogen peroxide.

Help received

Father helped type and set up, mother helped set up

Competition history

  • CSEF 2006 Plant Biology · Entry J1613

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