endosperm

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en·do·sperm

(en'dō-spĕrm),
A storage tissue found in many seeds that nourishes the embryo of a plant.

endosperm

a TRIPLOID (1) tissue found in many angiosperm seeds (e.g. those of the castor oil plant), that serves as a food source for the embryo which develops within it. Nonendospermic seeds (e.g. the runner bean) store their food substances within the cotyledons. See EMBRYO SAC for origin.
References in periodicals archive ?
Angiosperm seed maturation is a complex process resulting from the coordinated and concomitant growth and development of distinct structures: tegument, endosperm, and embryo (Ingram, 2010; Kesavan, Song, & Seo, 2013).
Endosperm rupture is the main limitation for germination of tomato seeds, weakening of the micropylar endosperm surrounding the radicle tip appears to be required for radicle protrusion and is likely to involve cell-wall hydrolysis by hydrolytic enzymes (Bewley, 1997).
35]S]-methionine incorporation studies, 400 to 500 mg of freshly isolated endosperms from field-grown ears were equilibrated for 30 min in 3 mL of aerated buffer osmoticum.
Dent corns have a central flour endosperm surrounded by a flinty endosperm that shrink at different rates as kernels dry, causing a dent to form in the top of each kernel Almost all hybrid field corns are dents, as are the most productive OP varieties.
Parent-specific gene expression and the triploid endosperm.
Among the grain types, dent grains have a higher proportion of farinaceous endosperm and are preferred as feed over hybrids with flint endosperm (Piovesan, Oliveira, & Gewehr, 2011; Zilic, Milasinovic, Terzic, Barac, & Ignjatovic-Micic, 2011).
Starch Accumulation and Amylopectin Structure: As shown in Figure 2, temperature treatments during grain filling had a considerable influence on the total starch accumulation and apparent amylose content in rice endosperms, with high temperature treatment exhibiting lower accumulation of total starch in rice endosperms than low temperature treatment, irrespective of rice genotypes (Figure 2A).
On the other hand, if the ultimate goal of a breeding program is to increase endosperm components, it is valuable to minimize the embryo size.
A water deficit induced increase in ABA may inhibit endosperm cell division in kernels (Artlip et al.
Studies by Ober and Setter (1992) indicated that the source of stress-induced ABA that accumulates in endosperms during their period of cell division is the maternal tissues, not the filial tissues (endosperm and embryo).
Endosperm FW data were taken at the time of endosperm preparation for FCM; nine endosperms (three kernels per petri dish x three replicates) per HTT were weighed to determine endosperm FW.