Matches in SemOpenAlex for { <https://semopenalex.org/work/W4239062425> ?p ?o ?g. }
Showing items 1 to 54 of
54
with 100 items per page.
- W4239062425 endingPage "458" @default.
- W4239062425 startingPage "458" @default.
- W4239062425 abstract "This paper reports the results of a detailed comparative investigation of the primary vascular system of seven species of conifers characterized by opposite and whorled phyllotaxis. Three patterns, indicated as types I, II and III, are described. Type I is similar to the sympodial pattern of conifers with helical phyllotaxis. Type III is a reticulate system which results from a fusion of a pair of traces that form the vascular supply to each leaf. Each trace of the pair branches from a separate, adjacent sympodium, and the two traces diverge synchronously in opposite directions. Type II is intermediate between types I and III. It resembles type I in that the vascular supply to a leaf originates as a single trace, and it is similar to type III in that direction of trace divergence may be either sinistrorse or dextrorse. Four species were found to be characterized by both types II and III, the different types occurring in different shoot tips of the same individual. All three types were observed in one species. Where type II occurred in the same plant with either type I or type III, or in the one species in which all types occurred, some leaves were supplied by a trace originating singly, others by a trace originating as a pair of bundles. On the basis of a comparative analysis of the vascular patterns in conifers with helical, opposite and whorled phyllotaxis, including a correlation of the type of vascular pattern with other characters, it was concluded that the reticulate system is probably derived from the open system characteristic of conifers with helical leaf arrangement, that this type of vascular system is composed of sympodia, and that the origin of the vascular supply to a leaf as a single trace is the primitive condition in the Coniferales." @default.
- W4239062425 created "2022-05-12" @default.
- W4239062425 creator A5043282337 @default.
- W4239062425 creator A5077376660 @default.
- W4239062425 date "1968-04-01" @default.
- W4239062425 modified "2023-10-18" @default.
- W4239062425 title "A Comparative Study of the Primary Vascular System of Conifers. II. Genera with Opposite and Whorled Phyllotaxis" @default.
- W4239062425 doi "https://doi.org/10.2307/2440575" @default.
- W4239062425 hasPublicationYear "1968" @default.
- W4239062425 type Work @default.
- W4239062425 citedByCount "9" @default.
- W4239062425 crossrefType "journal-article" @default.
- W4239062425 hasAuthorship W4239062425A5043282337 @default.
- W4239062425 hasAuthorship W4239062425A5077376660 @default.
- W4239062425 hasBestOaLocation W42390624252 @default.
- W4239062425 hasConcept C123130949 @default.
- W4239062425 hasConcept C126021549 @default.
- W4239062425 hasConcept C151730666 @default.
- W4239062425 hasConcept C21410773 @default.
- W4239062425 hasConcept C2777299769 @default.
- W4239062425 hasConcept C2780432395 @default.
- W4239062425 hasConcept C59822182 @default.
- W4239062425 hasConcept C78458016 @default.
- W4239062425 hasConcept C86803240 @default.
- W4239062425 hasConceptScore W4239062425C123130949 @default.
- W4239062425 hasConceptScore W4239062425C126021549 @default.
- W4239062425 hasConceptScore W4239062425C151730666 @default.
- W4239062425 hasConceptScore W4239062425C21410773 @default.
- W4239062425 hasConceptScore W4239062425C2777299769 @default.
- W4239062425 hasConceptScore W4239062425C2780432395 @default.
- W4239062425 hasConceptScore W4239062425C59822182 @default.
- W4239062425 hasConceptScore W4239062425C78458016 @default.
- W4239062425 hasConceptScore W4239062425C86803240 @default.
- W4239062425 hasIssue "4" @default.
- W4239062425 hasLocation W42390624251 @default.
- W4239062425 hasLocation W42390624252 @default.
- W4239062425 hasOpenAccess W4239062425 @default.
- W4239062425 hasPrimaryLocation W42390624251 @default.
- W4239062425 hasRelatedWork W1535876162 @default.
- W4239062425 hasRelatedWork W1979885834 @default.
- W4239062425 hasRelatedWork W2017497029 @default.
- W4239062425 hasRelatedWork W2047134548 @default.
- W4239062425 hasRelatedWork W2151388669 @default.
- W4239062425 hasRelatedWork W2345296227 @default.
- W4239062425 hasRelatedWork W3081444970 @default.
- W4239062425 hasRelatedWork W3215139134 @default.
- W4239062425 hasRelatedWork W4247921259 @default.
- W4239062425 hasRelatedWork W4250777493 @default.
- W4239062425 hasVolume "55" @default.
- W4239062425 isParatext "false" @default.
- W4239062425 isRetracted "false" @default.
- W4239062425 workType "article" @default.