Effect of light in duckweed lemna

However, if the major drop in duckweed populations were due to carrying capacity, then all three light colors reached it at the same time.

This experiment has led me to ask several more questions about color of light and how it affects photosynthesis. The charms of duckweed.

More research on this issue would be very interesting to me. This could prove that they reached carrying capacity and then were unable to continue supporting their population sizes.

As far as answering our initial question, I think it is difficult to say whether any of the beakers reached carrying capacity or if something else caused major decreases in number of Duckweed fronds. If we could do this over, I would like to find a more exact way of counting the fronds so we could get a correct list of data.

I think our results were more estimates than exact numbers of fronds. This is the focus I would take on the experiment if I did it. Flower TECH, 7 2 It became more difficult to get an exact count. Our experiment was done as carefully as possible, however, counting the number of fronds floating on the water proved to be a difficult process as more and more began to grow.

Natural light had the greatest number of duckweed fronds from the first data collecting session to the final one. I hypothesize this because on April 18th, Table 1 shows that all of the colors decreased population sizes.

This experiment supported our hypothesis. As research suggested, the duckweed was more partial to the red light than the blue, although there were two data collecting sessions where there were more fronds in the blue light beakers than the red light beakers.

Also, after the crash in population, more growth occurred that lead to an even greater carrying capacity than the first one. There was the same amount of water and room to grow, and though the color affected rate of growth, I would think each sample would reach the same carrying capacity before the population crash occurred.

Perhaps this means the short lifespan of the Duckweed was the only factor in the great decrease in population on April 18th. This shows that natural light enables Duckweed to grow at a more rapid pace than red or blue light. Research did suggest the short lifespan of Duckweed Cross, and we found many dead fronds throughout the experiment.

But for further research and experimentation, it would be very interesting to me to take a deeper look into these ideas. All colours in light are equal for photosynthesis.The four genera of duckweed are Lemna, Spirodela, Wolffia and Wolfiella (Riemer, D.N., ), are found on the surface of ponds and streams all across the United States (Kuhn, D., ).

In our lab we wanted to test two independent factors to manipulate duckweed growth; wavelength and nutrient availability. Download Citation on ResearchGate | Effects of light and temperature on duckweed photosynthesis | Rates of photosynthesis of Lemna minor L.

and Spirodela punctata (G.F.W. Meyer) Thompson, two aquatic angiosperms, were measured at different temperatures and light intensities.

Photosynthesis was measured both as oxygen.

Effect of Light on Stomatal Density of Duckweed Lemna minor Introduction - Lemna minor (common duckweed) Small aquatic plants, leaves, singe-dangling root. More about The Duckweed Experiment: Effects of Lowering Light Intensity on the Rate of Per Capita Growth of Lemna Minor biology - how light intensity affects the rate of photosynthesis Words | 9 Pages.

Effects of light and temperature on duckweed photosynthesis. Aquat. Bot., Rates of photosynthesis of Lemna minor L. and Spirodela punctata (G.F.W. Meyer) Thompson, two aquatic angiosperms, were measured at different temperatures and light intensities.

Photosynthesis was measured both as oxygen evolution and ~4CO, fixation. We hypothesized that the carrying capacity would reach the peak when the duckweed was being exposed to natural light over the red and blue light because natural light incorporates all the colors. "Sunlight is broken up into a prism of light, red and blue light have the greatest effect on plant growth.

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Effect of light in duckweed lemna
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