sepal

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sepal

The Columbia Encyclopedia, Sixth Edition | 2008 | The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press. (Hide copyright information) Copyright

sepal a modified leaf, part of the outermost of the four groups of flower parts. The sepals of a flower are collectively called the calyx and act as a protective covering of the inner flower parts in the bud. Sepals are usually green, but in some flowers (e.g., the lily and the orchid) they are the same color as the petals and may be confused with them. In some groups of plants (e.g., the marsh marigold and the anemone) they are absent. The small green leaflike structures at the base of the flower head in the aster family are not true sepals but bracts; the sepals are modified into a circle of tiny white hairs on the ovary (the pappus; see aster ). The sepals are sometimes fused into a tube around the base of the petals, as in the mint family.

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sepal

A Dictionary of Plant Sciences | 1998 | | © A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

sepal In a flower, one of the outer floral leaves, usually greenish, which are borne in a tight spiral or whorled.

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MICHAEL ALLABY. "sepal." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 11 Nov. 2009 <http://www.encyclopedia.com>.

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World Encyclopedia | 2005 | © World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

sepal Modified leaf that makes up the outermost portion of a flower bud. Although usually green and inconspicuous once the flower is open, in some species, the sepals look like the petals.

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Arabidopsis Genes AS1, AS2, and JAG Negatively Regulate Boundary-Specifying Genes to Promote Sepal and Petal Development1[W]
Magazine article from: Plant Physiology; 2/1/2008; ; 700+ words ; ...produced extremely tiny sepals and petals. Analysis...that cell division in sepal primordia of the double...Moreover, these abnormal sepals and petals exhibited...to its functions for sepal and petal architecture...formation to separate sepals (Brewer et al., 2004...
STRAWBERRY SEPAL: ANOTHER EXPLANT FOR THIDIAZURON-INDUCED ADVENTITIOUS SHOOT REGENERATION
Magazine article from: In Vitro Cellular & Developmental Biology; 9/1/2005; ; 700+ words ; ...regenerate shoots on excised sepals (calyx) of greenhouse...developed in vitro. Sepal cultures produced multiple...initiation. Young expanding sepals with the adaxial side...laboratory indicated that sepals are very effective for...was to determine if the sepal expiants are similar...
SYNERGISTIC PROMOTION OF GIBBERELLIN AND CYTOKININ ON DIRECT REGENERATION OF FLORAL BUDS FROM IN VITRO CULTURES OF SEPAL SEGMENTS IN SINNINGIA SPECIOSA HIERN
Magazine article from: In Vitro Cellular & Developmental Biology; 9/1/2006; ; 700+ words ; ...the cultured floral buds and sepals in Sinningia speciosa Hiern...regeneration from the cultured sepal segments was higher than that from the floral buds or whole sepals. In this study, we investigated...relation to the location of sepal segments and the combinations...
A Sepal-Expressed ADP-Glucose Pyrophosphorylase Gene (NtAGP) Is Required for Petal Expansion Growth in 'Xanthi' Tobacco1[C][W][OA]
Magazine article from: Plant Physiology; 9/1/2007; ; 700+ words ; ...expression of NtAGP was high in the sepal, moderate in the carpel and...and starch content in the sepal tissues of NtAGP-antisense...Xanthi' flowers from which sepals were removed, indicating that sepal carbohydrates are essential...
Ectopic expression of carpet-specific MADS box genes form lily and lisianthus causes similar homeotic conversion of sepal and petal in Arabidopsis
Magazine article from: Plant Physiology; 12/1/2002; ; 700+ words ; ...Similar Homeotic Conversion of Sepal and Petal in Arabidopsis1 Two...inducing homeotic conversion of the sepals into carpet-like structures...functional genes control the sepal formation; A, B, and E functional...the formation of ovules on the sepals and petals (Colombo et al...
Biotech Sepal Pharma.(Movers & shakers)
Magazine article from: Chemistry and Industry; 7/21/2008; 380 words ; Biotech Sepal Pharma has announced Frederic Revah as its new ceo. Sepal specialises in the development of anticancer agents from the jasmonate family of compounds.
Expression of U1 small nuclear ribonucleoprotein 70K antisense transcript using APETALA3 promoter suppresses the development of sepals and petals1
Magazine article from: Plant Physiology; 8/1/2003; ; 700+ words ; ...gene driven by the same promoter showed no abnormalities. These results show that U1-70K is necessary for the development of sepals and petals and is an essential gene in plants. Most eukaryotic nuclear genes contain non-coding intervening sequences (introns...
WHY COOK TONIGHT? Watertown's Sepal fails to live up to the hype.(Food)
Newspaper article from: The Boston Herald; 4/14/2002; ; 587 words ; ...We'd been hearing good things about Sepal for years. It's a modest, friendly...crunch from bits of toasted pita bread. Sepal was quiet the night of our visit, though...few things shine but little stands out. Sepal, 17 Nichols Ave., Watertown, 617...
Somerville cafe succeeds with Middle East light
Newspaper article from: The Boston Globe; 2/24/1994; ; 700+ words ; SEPAL CAFE Where: 235 Holland St., Teele Square...snowstorms ago at the beginning of January, Sepal Cafe opened in Teele Square, Somerville, and it might be just what the doctor ordered. Sepal (the e is pronouced the same as petal...
This Middle East fare deserves fanfare
Newspaper article from: The Boston Globe; 8/12/1999; ; 700+ words ; Sepal WHERE 117 Broadway St., Arlington TELEPHONE...Masoud's little Watertown restaurant, Sepal, was already quite successful when he opened...Masoud, on his own, opened a 48-seat Sepal in Arlington near the Capitol Theatre this...
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