nucellus

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nucellus

the tissue within the OVULE of a plant, surrounded by INTEGUMENTS (1) and containing the EMBRYO SAC.
References in periodicals archive ?
Identification of zygotic and nucellar tangerine seedlings (Citrus spp.
However, the nucellar epidermis produced a subdermal layer by periclinal division between the epidermis of the ovule and the megaspore mother cell (Fig.
alata is occluded by the nucellar beak, as reported to several other species within Euphorbiaceae (Endress, 1994; Souza et al.
Nucellar degradation to form a pollen chamber also occurs in Ginkgo (Douglas et al.
Survival by vitrification of nucellar cells of naval orange (Citrus sinensis Osb.
ju:s) EUC eucyclic (a Botanical term), deuce EWS Newspeak UIS nuisance YUS Yusufzai (a Pathan tribal group inhabiting the N-W Frontier Province of Pakistan \passage) EUS Euston, eustacy (a uniform change of sea level worldwide), UC nucellar, fuci, deduce \ Zeus, meuse us use, manuscript, meatus (a natural channel or tubular short 's' sound followed by long 'U' sound.
Avocado sunblotch viroid (ASBVd) is persistent in nucellar cultures (Persea americana Mill.
Although there is a large amount of variability within the Citrus genus with which the breeder can work, and closely related genera provide an even wider selection of characters, there are several barriers to the full utilization of this variability (sterility, incompatibility, nucellar embryony, juvenility).
Unreduced embryo sacs arise from somatic nucellar cells in apospory and unreduced archesporial cells in diplospory (Asker and Jerling, 1992).
Integuments as well as extraneous nucellar tissue surrounding the female gametophyte were carefully removed from each ovule.