perisperm


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Related to perisperm: funiculus, pericarp, nucellus

per·i·sperm

 (pĕr′ĭ-spûrm′)
n. Botany
A layer of nutritive tissue in the seed of certain flowering plants that is derived from the nucellus and surrounds the embryo.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

perisperm

(ˈpɛrɪˌspɜːm)
n
(Botany) the nutritive tissue surrounding the embryo in certain seeds, and developing from the nucellus of the ovule
ˌperiˈspermal, ˌperiˈspermic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.perisperm - the nutritive tissue outside the sac containing the embryo in some seeds
plant tissue - the tissue of a plant
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
140 Perisperm (0) absent, (1) from nucellar ground tissue, (2) from nucellar epidermis.
Antimutagenic properties of a polyphenol-enriched extract derived from sesame-seed perisperm. Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 634: 163-171.
The physical strength of the endosperm, perisperm or seed coverings have been shown to restrict germination in cultivated crops like lettuce, tomato and cucumber (Dutta et al., 1994).
Buxbaum (1958) recognized four subtribes, particularly in the Cacteae tribe, based on seed morphology: Echinocactinae exhibits a perisperm and hard, black seed testas; Thelocactinae has black seed testas and a mostly warty surface; Ferocactinae exhibits dotted or reticulated seed testas; and Coryphanthinae has soft, smooth, and brown testas, similar to the Coryphantha and Mammillaria species studied herein.
Somatic embryogenesis from integument (perisperm) cultures of coffee.
(2007) has found that a polyphenolic mixture derived from sesame-seed perisperm (SSP) exhibited desmutagenic activity against hydrogen peroxide, and benzo[a]pyrene in TA98 and/or TA100 and biomutagenic activity against sodium azide in strain TA100 of Salmonella typhimurium.
schidigera, also showing an organized dissolution of the perisperm cell wall close to the embryo.