Morphological characterization of seeds in Portulacaceae / (Registro nro. 12821)
[ vista simple ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02742nab a22002657a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EC-PaCDF |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20201130125434.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160902t20132013xxu|||||||||||||||||eng|| |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EC-PaCDF |
| Language of cataloging | spa |
| Transcribing agency | EC-PaCDF |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Edition number | 23 |
| Classification number | 581.467 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Ocampo, Gilberto. |
| Relator term | autor |
| 245 10 - TITLE STATEMENT | |
| Title | Morphological characterization of seeds in Portulacaceae / |
| Statement of responsibility, etc. | Gilberto Ocampo. |
| 260 3# - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Date of publication, distribution, etc. | 2013. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | : 1-24 p. |
| 520 0# - SUMMARY, ETC. | |
| Summary, etc. | Portulacaceae is a monogeneric family with around 100 species distributed around the world. Seed morphology is diverse in this group, and its variation has been used for taxonomic and identification purposes. However, documentation of seed morphology has focused on a few species complexes or has been limited to specific countries and geographic areas. Moreover, the terminology employed in different investigations is heterogeneous, thus complicating analyses of<br/>seed morphological diversity in Portulacaceae. In this study, the seed morphology of 58 samples representing 49 species, 9 subspecies, and 2 cultivars of Portulaca was documented with the use of scanning electron microscopy (SEM). Based on the examination of the resulting images, a set of morphological features for describing the general shape of the sedes and their individual cell features is proposed; in addition, morphological descriptions for all taxa included in this study are provided. The results indicate that the shape of the seeds was constant within species, contrary to the characters that describe individual cell features, which showed important variation even within the same seed sample. In particular, the outline of the cells and the curvature of the anticlinal cell walls (ACW) were very variable, so a combination of carácter states was needed to describe the overall diversity of a sample. Conversely, the relief of the periclinal cell walls (PCW)<br/>was relatively constant throughout the seeds of the same species, but the relief of the cells of the lateral and peripheral faces was dissimilar in a number of taxa. In addition, other studies provide evidence that the relief of the PCW may vary in widely distributed species. Increased taxon sampling and multiple samples of species with wide geographical ranges will facilitate the study of patterns of variation, and may provide insights into the role of environmental variables on seed<br/>diversity of Portulacaceae.<br/> |
| 546 ## - LANGUAGE NOTE | |
| Language note | Inglés |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Caryophyllales |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Portulaca |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Scanning electron microsopy |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Microscopía electrónica de barrido |
| 773 0# - HOST ITEM ENTRY | |
| Title | Phytotaxa |
| Related parts | Vol. 141, No. 1 (Oct 2013), p. 1-24. |
| 856 0# - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://dx.doi.org/10.11646/phytotaxa.141.1.1 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Artículo |
| Withdrawn status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Colección PDF | 02/09/2016 | 581.467 OCA 2013 | 2021-1433 | 02/09/2016 | 02/09/2016 | Documento electrónico | ||||
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Artículos | 20/02/2017 | 581.467 OCA 2013 | 2020-1065 | 20/02/2017 | 20/02/2017 | Artículo |