Microscopic Granules
I continue here with my microscopic dissection of the Alyssum flowering plant. I believe that the small yellow structure shown here is the Stigma end of the Pistal. My image was created using a Nikon light microscope. Several images focused at different planes were photostacked together using Helicon Focus, with additional post processing work in Lightroom and Photoshop. The polar width of the small granules (pollen?) in this image is approximately 20 microns. You can also see many of the individual yellowisn retangular shaped cells making up the Pistal.
Further information
"The pistil is the name given to the entire female reproductive system contained in a flower. It is composed of the stigma, style and ovary, which houses the ovules that eventually become seeds. The pistil contains all the structures required to trap and grow compatible pollen tubes until they are capable of successfully fertilizing ovules.
The stigma is the sticky, swollen structure at the top of the pistil. Its job is to capture and hold onto pollen grains. As they cling to the stigma, these dry reproductive structures are rehydrated; the stigma then sends hormonal signals to the pollen grains that tell them to elongate into the pistil.
The style is a long, hollow tube that holds the stigma far enough away from the ovary to be able to catch pollen grains as they pass by or positions the stigma in such a way so pollinators will rub against it. The length of the style is different depending on the plant, helping the pistil weed out any incompatible pollen tubes when they fail to grow long enough to properly fertilize the ovules."
Source: homeguides.sfgate.com/part-flower-contains-stigma-style-6...
Microscopic Granules
I continue here with my microscopic dissection of the Alyssum flowering plant. I believe that the small yellow structure shown here is the Stigma end of the Pistal. My image was created using a Nikon light microscope. Several images focused at different planes were photostacked together using Helicon Focus, with additional post processing work in Lightroom and Photoshop. The polar width of the small granules (pollen?) in this image is approximately 20 microns. You can also see many of the individual yellowisn retangular shaped cells making up the Pistal.
Further information
"The pistil is the name given to the entire female reproductive system contained in a flower. It is composed of the stigma, style and ovary, which houses the ovules that eventually become seeds. The pistil contains all the structures required to trap and grow compatible pollen tubes until they are capable of successfully fertilizing ovules.
The stigma is the sticky, swollen structure at the top of the pistil. Its job is to capture and hold onto pollen grains. As they cling to the stigma, these dry reproductive structures are rehydrated; the stigma then sends hormonal signals to the pollen grains that tell them to elongate into the pistil.
The style is a long, hollow tube that holds the stigma far enough away from the ovary to be able to catch pollen grains as they pass by or positions the stigma in such a way so pollinators will rub against it. The length of the style is different depending on the plant, helping the pistil weed out any incompatible pollen tubes when they fail to grow long enough to properly fertilize the ovules."
Source: homeguides.sfgate.com/part-flower-contains-stigma-style-6...