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Cholerny Spammer
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 Posted: Tue 16:09, 18 Jan 2011 Post subject: cheap ghd hair Capsule made of fern subfamily (Ath |
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Capsule made of fern subfamily (Athyriaceae) plant tracheary elements
riformwithoutdimorphicwidthperforation; scalariformwithperforationpitdimorphism; reticulateplates; reticulate ·-scalariformplates; andcoarse ·-poredperforationplates. Accordingtothedegreeofpitmembraneremnants,[link widoczny dla zalogowanych], tracheawelementscouldalsobedividedintothefollowingthreetypes: intactpitmembraneonpartregion; thread-likeorweb-likestructure; andlittleornopitmembraneremnants. Tracheawelementsinfernsandvesselelementsinangiospermshavedifferentmorphologyandtransfermechanisms. TheidentificationofvessleelementsandtracheidsshoulddependonthefactthatperforationplatesexistontheendwallsorIatera1walls, ratherthanthepresenceofapitmembrane. Sotracheawelementswithperforationplatesonlyontheendwallsarevesselelements. Tracheidshaveendwallsandlateralwallswiththesamemorphologicalcharacteristicsorstructure, withperforationplatesornot. FrOmthepresentresults. weconsideredthattrachearyelementsthatconductwaterandmineralinfernsandgymnospermaretracheids. TrachearyelementsofTriblemma (J.Sm.) ChingandDiplaziumdiffer, soTriblemmacanreasonablybetransferredfrOmDiplaziumtoDeparioideae. AthyriopsisChingandLunathyriumKoidz. mightbemoreadvanced. DryoathyriumChingmightberelativelyprimitiveinDeparioideae, andthesystematicpositionofTriblemmashouldbebetweenAthyriopsisandDryoathyriumChing. KeywordsDeparioideae,[link widoczny dla zalogowanych], perforationplates, scanningelectronmicroscopy (SEM). trachearyelementsZhengL,[link widoczny dla zalogowanych], XuH,[link widoczny dla zalogowanych], WangML (2008). Studyoftrachea ~ elementsinDepari0ideae (Athyriaceae) fromChina. ChinBullBot25 ,[link widoczny dla zalogowanych],203-211 'Authorforcorrespondence. E-mail: mall_wang2000 @ sina. com (Editor: the white feather red)
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