Pollinia of Calotropis under foldscope
Oct 04, 2019 • 3:16 AM UTC
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SD_29
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Calotropis
commonly called as Ak in native language is a milkweed because of the milky latex produced. Calotropis is a common weed found abundantly in North
India. The peculiar thing about its pollen grains is the formation of Pollinia.
Using a foldscope I could easily observe and understand the structure of a pollinium. From a Calotropis flower, I firstly removed its Gynostegium (the stigmatic disc) and then gently separatedthe pollinia from the edges of the pentangular disc and mounted them on a slide to observe though a foldscope.
commonly called as Ak in native language is a milkweed because of the milky latex produced. Calotropis is a common weed found abundantly in North
India. The peculiar thing about its pollen grains is the formation of Pollinia.
Using a foldscope I could easily observe and understand the structure of a pollinium. From a Calotropis flower, I firstly removed its Gynostegium (the stigmatic disc) and then gently separatedthe pollinia from the edges of the pentangular disc and mounted them on a slide to observe though a foldscope.
A pollinium is a hard sac-like
definite structure formed from a mass of pollen
grains agglutinated within one anther. These are transferred during pollination
as a single unit. This is commonly referred to as – Translator. In Calotropis it is seen that each translator consists of
two parts:
Corpusculum A pair of arms – Caudicles The corpusculum attaches to the margins of stigma disc between the anthers and the pair of arms is attached to the pollinia of the adjacent anther
definite structure formed from a mass of pollen
grains agglutinated within one anther. These are transferred during pollination
as a single unit. This is commonly referred to as – Translator. In Calotropis it is seen that each translator consists of
two parts:
Corpusculum A pair of arms – Caudicles The corpusculum attaches to the margins of stigma disc between the anthers and the pair of arms is attached to the pollinia of the adjacent anther
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