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achene
achene
achene A dry indehiscent fruit formed from a single carpel and containing a single seed. An example is the feathery achene of clematis. Variants of the achene include the
caryopsis,
cypsela,
nut, and
samara. See also
etaerio.
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Reconfiguration of the Achene and Receptacle Metabolic Networks during Strawberry Fruit Development1[C][W]
Magazine article from: Plant Physiology; 10/1/2008; ; 700+ words
; ...supply nutrients to the achenes and the surrounding parenchyma cells. The achenes are approximately 1 mm...of them. The mature achene contains a hard and relatively...in the receptacle and achenes prior to the white stage...coordinated action between achene and receptacle is part...
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Achene germination ecology of the federally threatened floodplain endemic boltonia decurrens (asteraceae)
Magazine article from: The American Midland Naturalist; 1/1/2002; ; 700+ words
; ...germination requirements of achenes, monitored seasonal changes...germination responses of buried achenes and determined if buried achenes...Stoecker et al., 1995); achene morphology, production and...freshly matured ray and disk achenes, respectively, of B. decurrens...
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Effects of achene pattern, achene density and competition on germination in Boltonia decurrens, a threatened plant of the Illinois River Valley1
Magazine article from: Journal of the Torrey Botanical Society; 10/1/2006; ; 700+ words
; ...assessed the effects of achene pattern (aggregated...germination of B. decurrens' achenes in the presence of three...of nearby competitor achenes. Boltonia decurrens...density in aggregated achenes, thus suggesting the...population site. Key words: achene aggregation, achene...
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Use of near-infrared reflectance spectroscopy for selecting for high stearic acid concentration in single husked achenes of sunflower.(Crop Breeding, Genetics & Cytology)
Magazine article from: Crop Science; 1/1/2004; ; 700+ words
; ...concentration in unhusked sunflower achenes, which was attributed to the low resolution of unhusked achene spectra in comparison with husked...acid composition of single husked achenes of sunflower and to evaluate its performance...
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Nondestructive Screening for Oleic and Linoleic Acid in Single Sunflower Achenes by Near-Infrared Reflectance Spectroscopy.
Magazine article from: Crop Science; 1/1/1999; ; 700+ words
; ...composition of the seed oil (n = 259 achenes) and with stable high oleic...different types of sunflower achenes used in the development and...analysis of intact, single achenes of sunflower was made from...hole lodging the sunflower achene and having its typical shape...
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A study of cytology, isozyme, and interspecific hybridization on the big-achene group of buckwheat species (Fagopyrum, polygonaceae).(Crop Breeding, Genetics & Cytology)
Magazine article from: Crop Science; 9/1/2004; ; 700+ words
; ...divided into two groups: (i) the big-achene group, including common buckwheat (F...Q-F. Chen, and (it) the small-achene group, including F. gracilipes (Hemsl...natural perennial species in the big-achene group were considered as one species...
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Germination of threadleaf sedge (Cyperaceae: Carex filifolia) *.
Magazine article from: Transactions of the Nebraska Academy of Sciences; 6/1/2002; ; 700+ words
; ...facilitate "raking" the plants. New achenes were collected from the same locations...and the experiment was repeated. Achene appearance and size were generally...days later, and, on average, more achenes were produced per inflorescence at...
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Understanding the Carbonization and Preservation of Sunflower and Sumpweed Remains
Magazine article from: Midcontinental Journal of Archaeology, MCJA; 10/1/2008; ; 700+ words
; ...carbonization of achenes and to evaluate...technologies, may affect achene size and preservation...relatively large achene correlates with...compare the sizes of achenes or seeds, then...sunflower seeds and achenes to estimates of original achene size, it is necessary...
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Ray of hope
Newspaper article from: Jerusalem Post; 12/3/2009; ; 644 words
; ...the camphorweed is called an achene, which is dry and contains...seeds and sunflower seeds are achenes. Camphorweed's ray florets produce one kind of achene and the disc florets produce another. The achenes produced by the disc florets...
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Studies conducted at Utsunomiya University on science recently published.
Newspaper article from: NewsRx Health & Science; 8/23/2009; 700+ words
; ...4=severely malformed. Nd achenes in CT-1st and CT-2nd were...score: 2.8 and 1.8. Un achene in HT-1st was 45%, while...researchers concluded: "The Ab achenes rate was remarkably increased...and raised the unfertilized achene rate, resulting in a high...
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achene
Book article from: The Columbia Encyclopedia, Sixth Edition
achene , dry, simple, one-seeded...inner wall at only one point. Achenes are indehiscent, i.e...seed of a sunflower is an achene; the shell is the wall of...strawberry consists of many achenes embedded in a fleshy receptacle...
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Mulberry Family (Moraceae)
Encyclopedia entry from: The Gale Encyclopedia of Science
...a fleshy drupe or a dry achene. The flowers fuse as they...consists of small drupes or achenes grouped together in a single...pollinated, the true fruit, an achene, develops inside the synconium...multiple fruit composed of achenes. The wood
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Rosaceae
Book article from: Plant Sciences
...produced by its species. Many Rosaceae have achenes and follicles, both of which are nonfleshy. Achenes contain one seed and have a hard fruit wall...fleshy (accessory tissue). The fruits are achenes that are attached to the outside of the...
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Rose Hip
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine
...s true fruits are the numerous tiny achenes, each enclosing a single seed, contained...stem tip that swells to enclose the hairy achenes. The smooth skin of the hip is first...hips, and the seeds contained within the achenes, are medicinally valuable. The leaves...
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Fruits
Book article from: Biology
...INDEHISCENT At maturity dry; does not split open Achene Close-fitting pericarp surrounding a single seed Sunflower...flower stalk), and the true fruits are the tiny, seedlike achenes on the surface. Apart from strawberry, all the fruit types...
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