Effect Of Blue Light On Photosynthesis

Our perception of blue light especially at shorter wavelengths for example 400 to 425 nm is low compared to green. Increasing light intensity can promote plant photosynthesis rate in the range of low light intensity.

Photosynthesis Lab The Effect Of Light Intensity On The Rate Of

In contrast blue light is considered equally effective as green or red light at driving photosynthesis.

Effect of blue light on photosynthesis. A few experiments have been done concerning the effects of light quality and photosynthetic photon flux ppf on plant leaf photosynthesis. Thus while blue light can appear somewhat dim to us it has high energy and is useful for plant growth applications. Electron microscopy showed that blue light caused severe damage to the fine structure of chloroplasts at early stages of leaf senescence but effects at later stages of leaf senescence became less severe compared to the control.

The carotenoids in plants absorb the blue light and control leaf fall. A plant bathed in blue light should have strong stems and thick green leaves. This study was conducted to clarify the effects of the blue and red ppf level on plant leaf net photosynthesis below light saturation point.

Light from the blue spectrum promotes the production of chlorophyll. Compared to the control red and blue light both significantly increased the chlorophyll a b ratio. Blue light is typically encountered in nature at midday when the angle of the sun is directly vertical or close to it.

And the effect of blue light on photosynthesis became weaker than red light under higher light intensity. But when light intensity reaches light saturation photosynthesis rate does not increases but decreases. Blue light is responsible for a plant s growth toward the light and even the amount of water retained by the plant.

Blue light is of course a main contributor to photosynthesis via chlorophyll but it also influences a plant in other ways.

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