perisperm


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Related to perisperm: funiculus, pericarp, nucellus

perisperm

a nutritive tissue found in some seeds that is derived from the NUCELLUS of the ovules.
References in periodicals archive ?
Since this is entirely nucellar in origin, this tissue is probably a perisperm, not a chalazosperm (Rudall, 1994).
Although all the the former examples of perisperm are derived from subdermal tissues, in Acorus the perisperm is dermal.
Perisperm and chalazosperm are not homologous structures.
Although Engler (1901) described this tissue as a perisperm, Fries (1919), describing C.
Perisperm has evolved several times in monocotyledons.