achene


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a·chene

(ă-kēn')
A small one-seeded fruit.
[G. a- priv., + chainō, to yawn]

achene

a small, dry, INDEHISCENT, one-seeded fruit with a thin PERICARP seen, for example, on the surface of strawberry ‘fruits’. See Fig. 7 .
References in periodicals archive ?
The anatomy, morphology and germination behavior of the achenes is key to the survival of wild hemp.
Although, this winged structure aids in dispersal to some degree, we believe a primary function is to prevent the achene from becoming buried too deeply in the sandy soil.
clavatum since "characters [achene margin shape and achene stipe length] run together in the same populations in AL and TN, and also in my NC material.
Because laboratory germination procedures were uniform each year, it is probable that germination differences observed between years were related to different environmental conditions acting on the parent plants during achene development and maturation.
In the "Evolution of Propagules Under Domestication" section, it was noted that achenes in domesticated plants of C.
It produces multiple seeds per generative shoot, and it is characterized by the well-marked morphophysiological dormancy which allows achenes to germinate at the next season after bearing.
5) mm long, globose to ovoid, with obtuse, apiculate apex, conspicuously pitted, white or gray, with tufts or lines of minute, yellowish to purplish hairs; hypogynium distinctly 3-lobed, the lobes oblong to lanceolate, apex obtuse to subacute, appressed to achene base.
Regarding achenes ("seeds"), diagnostic for varieties: Only substantially mature achenes exhibit the identification characteristics clearly.
Raynal and potential hybrids between the two taxa currently being conducted at Southern Illinois University in Edwardsville, 4) collect achenes, if available, for permanent cold storage, 5) identify any potential new threats to the species, 6) outline recommendations for additional research, and 7) suggest management recommendations that may ensure the persistence of this species in Illinois.
The proportion of anthocarps developing a mature achene were determined for each treatment and compared using a generalized linear model with logit link function (McCulloch and Searle, 2001) to determine whether there was a significant difference in proportion of mature achenes developed under each treatment.
Description: Opercle of achene keeled and winged, ventral margin wavy, beak ventral.