標(biāo)題: Titlebook: Early Evolution of Flowers; Peter K. Endress,Else Marie Friis Conference proceedings 1994 Springer-Verlag/Wien 1994 Flora.Flowers.evolutio [打印本頁(yè)] 作者: 加冕 時(shí)間: 2025-3-21 17:16
書(shū)目名稱Early Evolution of Flowers影響因子(影響力)
書(shū)目名稱Early Evolution of Flowers影響因子(影響力)學(xué)科排名
書(shū)目名稱Early Evolution of Flowers網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱Early Evolution of Flowers網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱Early Evolution of Flowers被引頻次
書(shū)目名稱Early Evolution of Flowers被引頻次學(xué)科排名
書(shū)目名稱Early Evolution of Flowers年度引用
書(shū)目名稱Early Evolution of Flowers年度引用學(xué)科排名
書(shū)目名稱Early Evolution of Flowers讀者反饋
書(shū)目名稱Early Evolution of Flowers讀者反饋學(xué)科排名
作者: 抑制 時(shí)間: 2025-3-21 21:57
Origin of the angiosperm flower: a phylogenetic perspective,liids or paleoherbs) and the position of fossils permit varied scenarios for origin of the flower. Trees linking angiosperms with ., ., and . and this “anthophyte” clade with . imply that flowers arose in the common ancestor of anthophytes and carpels are cupule-bearing sporophylls. However, trees l作者: Lipoprotein(A) 時(shí)間: 2025-3-22 02:28 作者: 男生戴手銬 時(shí)間: 2025-3-22 04:46
Palaeobotanical evidence on the early radiation of magnoliid angiosperms,most diverse assemblage from the Early Cretaceous part of the sequence is from the Puddledock locality, Virginia, eastern USA. This material is of Early to Middle Albian age and is particularly rich in magnoliid and hamamelidid angiosperms. Flowers and fruits from the Puddledock flora are mostly sim作者: 無(wú)表情 時(shí)間: 2025-3-22 08:56 作者: 欺騙世家 時(shí)間: 2025-3-22 14:03
Patterns of floral evolution in the early diversification of non-magnoliid dicotyledons (eudicots),iaperturate or triaperturate-derived pollen (non-magnoliids/eudicots). Evidence from morphology, as well as the .B and .L genes (cpDNA), indicates that extant . (e.g., ., ., ., ., .) as well as “l(fā)ower” . [e.g., . (allied to .), ., ., ., .] and several other families (e.g., ., ., ., .) are basal in t作者: 欺騙世家 時(shí)間: 2025-3-22 17:02 作者: 商品 時(shí)間: 2025-3-22 23:41
Ontogeny of staminate and carpellate flowers of , (,),al, with eight to 13 greenish yellow to red tepals in the flower. Each male flower has five (four to seven) spirally arranged stamens forming a red pentagonal synandrous shield. Transitions between tepals and stamens occur occasionally. Each carpellate flower contains 25–30 free, spirally arranged c作者: Extricate 時(shí)間: 2025-3-23 01:58
Floral aspects of , (,): pollination, ontogeny and structure,ily . or tribe . primarily based on the occurrence of a hypogynous calyx, originally interpreted as an involucre in an otherwise epigynous flower, orthotropous ovules, lack of an aril, and inaperturate pollen. Cladistic and molecular studies support the association of . with ., and . in the family .作者: floaters 時(shí)間: 2025-3-23 09:05
Evolutionary aspects of the floral structure in ,,ystematists and palaeobotanists that the genus represents the basal clade of extant angiosperms: the flowers are minute; the organ number and phyllotaxis are highly variable — spiral (Fibonacci or Lucas pattern) or whorled (3–4-merous whorls) — but there is a single carpel; the stamens are not diffe作者: arboretum 時(shí)間: 2025-3-23 10:39
Petal evolution in ,,e petals consisting of a long stalk and a fleshy limb by the partial or total reduction of the stalk and the adaxial wall. In this family the petals originally offer nectar as an insect attractant. Various types of nectary cup evolved independently in each phyletic group adapting to different kinds 作者: archaeology 時(shí)間: 2025-3-23 15:53 作者: cinder 時(shí)間: 2025-3-23 19:20
Flowers in , and the origin of flowers in other subclasses of the angiosperms. II. The relationshipy many spirally arranged .). The presumably most archaic flower type in the . is found in the cactaceous genus .. It can be derived from a paeonioid pattern. Both the paeonioid and pereskioid floral patterns repeatedly have given rise to simpler flower constructions in the . and ., respectively.作者: Bombast 時(shí)間: 2025-3-23 22:38 作者: capsule 時(shí)間: 2025-3-24 06:03 作者: prostatitis 時(shí)間: 2025-3-24 08:38
Measures on Complete Metric Spaces androecium, and include both bisexual and unisexual forms. The most unexpected result of this study of Early Cretaceous flowers from Portugal is the presence of several epigynous forms at this early stage of angiosperm evolution.作者: CLASH 時(shí)間: 2025-3-24 12:56
al parts prevent a detailed discussion of the systematic affinities of the fossil. The morphology of . suggests that in some angiosperms axile placentation may have evolved through the fusion of conduplicate carpels.作者: 行為 時(shí)間: 2025-3-24 18:22
https://doi.org/10.1007/978-3-662-33821-6of pollinators. In some genera, the petals develop long spurs. In others they replace sepals as the showy organ with the reduction of the nectary part, and in the extreme they become completely flat structures by the loss of nectar secretion.作者: FER 時(shí)間: 2025-3-24 19:32
Ungleiche Netzwerke - Vernetzte Ungleichheittes with coniferopsids suggest that flowers evolved by aggregation of fertile shoots into pseudanthia. New data on fossils or the control of floral morphogenesis in angiosperms and . might distinguish among these hypotheses.作者: 特征 時(shí)間: 2025-3-25 00:43
Photo-Transferred Thermoluminescence,zonasulculate, (3) that floral ontogeny is similar to that previously described for epigynous members of the . s. str., and (4) anatomical and morphological similarities with other . s. str. The cleistogamous and chasmogamous flowers are self-pollinating, the latter perhaps facilitated by flies in emergent flowers.作者: Flinch 時(shí)間: 2025-3-25 06:26 作者: 忍耐 時(shí)間: 2025-3-25 11:17
Origin of the angiosperm flower: a phylogenetic perspective,tes with coniferopsids suggest that flowers evolved by aggregation of fertile shoots into pseudanthia. New data on fossils or the control of floral morphogenesis in angiosperms and . might distinguish among these hypotheses.作者: Lobotomy 時(shí)間: 2025-3-25 14:51
Floral aspects of , (,): pollination, ontogeny and structure,zonasulculate, (3) that floral ontogeny is similar to that previously described for epigynous members of the . s. str., and (4) anatomical and morphological similarities with other . s. str. The cleistogamous and chasmogamous flowers are self-pollinating, the latter perhaps facilitated by flies in emergent flowers.作者: 細(xì)節(jié) 時(shí)間: 2025-3-25 16:07
Evolutionary aspects of the floral structure in ,,may be interpreted either as bracts or tepals. However, other simple features may still be seen as apomorphies in the context of underwater pollination, especially the lack of lignified tissues in floral organs (except for two horns on each anther).作者: GET 時(shí)間: 2025-3-25 20:33
Angiosperm floral structures from the Early Cretaceous of Portugal, androecium, and include both bisexual and unisexual forms. The most unexpected result of this study of Early Cretaceous flowers from Portugal is the presence of several epigynous forms at this early stage of angiosperm evolution.作者: Assault 時(shí)間: 2025-3-26 02:05
,, a Late Cretaceous angiosperm fructification from Hokkaido, Japan,al parts prevent a detailed discussion of the systematic affinities of the fossil. The morphology of . suggests that in some angiosperms axile placentation may have evolved through the fusion of conduplicate carpels.作者: 百科全書(shū) 時(shí)間: 2025-3-26 07:32
Petal evolution in ,,of pollinators. In some genera, the petals develop long spurs. In others they replace sepals as the showy organ with the reduction of the nectary part, and in the extreme they become completely flat structures by the loss of nectar secretion.作者: 直覺(jué)好 時(shí)間: 2025-3-26 09:00 作者: Adherent 時(shí)間: 2025-3-26 14:27
https://doi.org/10.1007/978-3-662-68865-6mportant to constantly synthesize new results from these fields. (1) Palaeobotany brought two major developments, first comparative structural and stratigraphie pollen studies (since . 1963 and . 1969), followed by the discovery of excellently preserved Cretaceous flowers (since . & . 1981). (2) Dev作者: Esophagitis 時(shí)間: 2025-3-26 19:14
Ungleiche Netzwerke - Vernetzte Ungleichheitliids or paleoherbs) and the position of fossils permit varied scenarios for origin of the flower. Trees linking angiosperms with ., ., and . and this “anthophyte” clade with . imply that flowers arose in the common ancestor of anthophytes and carpels are cupule-bearing sporophylls. However, trees l作者: ARBOR 時(shí)間: 2025-3-26 23:43
Measures on Complete Metric Spacess sediments from Portugal. The material illustrates considerable morphological variability in number and arrangement of floral parts, with the most diversity among magnoliid taxa; relatively few eudicots have been identified. Generally the flowers are small with undifferentiated perianth and massive作者: 殺蟲(chóng)劑 時(shí)間: 2025-3-27 02:05
Unionism in the United Kingdom, 1918-1974most diverse assemblage from the Early Cretaceous part of the sequence is from the Puddledock locality, Virginia, eastern USA. This material is of Early to Middle Albian age and is particularly rich in magnoliid and hamamelidid angiosperms. Flowers and fruits from the Puddledock flora are mostly sim作者: ORBIT 時(shí)間: 2025-3-27 06:13 作者: 人造 時(shí)間: 2025-3-27 10:13 作者: Fibrinogen 時(shí)間: 2025-3-27 16:10 作者: Vital-Signs 時(shí)間: 2025-3-27 20:51 作者: 多節(jié) 時(shí)間: 2025-3-28 01:24 作者: 暗語(yǔ) 時(shí)間: 2025-3-28 04:08
Das Geheimnis der ungleichen Jahreszeiten,ystematists and palaeobotanists that the genus represents the basal clade of extant angiosperms: the flowers are minute; the organ number and phyllotaxis are highly variable — spiral (Fibonacci or Lucas pattern) or whorled (3–4-merous whorls) — but there is a single carpel; the stamens are not diffe作者: 草率男 時(shí)間: 2025-3-28 09:53 作者: micronized 時(shí)間: 2025-3-28 11:59 作者: 辯論 時(shí)間: 2025-3-28 14:57
https://doi.org/10.1007/978-3-030-24720-1y many spirally arranged .). The presumably most archaic flower type in the . is found in the cactaceous genus .. It can be derived from a paeonioid pattern. Both the paeonioid and pereskioid floral patterns repeatedly have given rise to simpler flower constructions in the . and ., respectively.作者: 打谷工具 時(shí)間: 2025-3-28 18:53 作者: 雄偉 時(shí)間: 2025-3-29 00:37
0172-6668 Overview: 978-3-7091-7432-6978-3-7091-6910-0Series ISSN 0172-6668 作者: 壕溝 時(shí)間: 2025-3-29 03:08
https://doi.org/10.1007/978-3-030-24720-1y many spirally arranged .). The presumably most archaic flower type in the . is found in the cactaceous genus .. It can be derived from a paeonioid pattern. Both the paeonioid and pereskioid floral patterns repeatedly have given rise to simpler flower constructions in the . and ., respectively.作者: Incommensurate 時(shí)間: 2025-3-29 08:44
https://doi.org/10.1007/978-3-7091-6910-0Flora; Flowers; evolution; influence; systematics; the origin; Systematic Botany作者: ineptitude 時(shí)間: 2025-3-29 13:06
978-3-7091-7432-6Springer-Verlag/Wien 1994作者: 吊胃口 時(shí)間: 2025-3-29 15:39
Flowers in , and the origin of flowers in other subclasses of the angiosperms. II. The relationshipy many spirally arranged .). The presumably most archaic flower type in the . is found in the cactaceous genus .. It can be derived from a paeonioid pattern. Both the paeonioid and pereskioid floral patterns repeatedly have given rise to simpler flower constructions in the . and ., respectively.作者: 額外的事 時(shí)間: 2025-3-29 20:47 作者: Outwit 時(shí)間: 2025-3-30 00:13 作者: ensemble 時(shí)間: 2025-3-30 06:56
The Critique of Liberalism as Masculinist,e of appearance of disparate types of floral morphology in .. They also reveal diversity in character complexes now associated with several different modes of insect pollination and suggest that during the Turonian, passive (e.g., wind) dispersal of seeds was important in magnoliid taxa.作者: 影響帶來(lái) 時(shí)間: 2025-3-30 09:09
https://doi.org/10.1007/978-981-10-1974-6., ., certain .), delimitation of the flower is not always clear and there is a more or less gradual transition between tepals and inflorescence bracts. Plasticity in floral form at this level of angiosperm evolution is predominantly encompassed by dimerous and trimerous cyclic floral organization a作者: dermatomyositis 時(shí)間: 2025-3-30 14:43
f the staminal shield, with the stamen primordia projecting as flattened marginal extensions. The connective region of each stamen broadens markedly, resulting in wide separation of the sporangial pairs of each stamen. Just before anthesis, each connective arches outward so that the sporangia appear
