The use of the scanning reflection electron microscope in the study of plant and microbial material

Echlin, Patrick

doi:10.1111/j.1365-2818.1968.tb00623.x

Cited by 58 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carex (Toivonen & Timonen 1976), Cocculus (Forman 1974), Epilobium (Seavey et al 1977b), Erica (Huckerby et al 1972), Mentzelia (Hill 1976) and Scirpus (Schuyler 1971), and for distinguishing subspecies and varieties within others, e.g. Arenaria (Echlin 1968) and Cochlearia (Godeau 1973a, b). Seed surface patterns are considered to be significant at higher taxonomic levels (sections, tribes, etc.…”

Section: Introductionmentioning

confidence: 99%

Seed surface structure in the genus Zieria Sm. (Rutaceae)

Powell¹,

Armstrong²

1980

Telopea

View full text Add to dashboard Cite

Powell, J. M. and J. A. Armstrong (National Herbarium of New South Wales, Royal Botanic Gardens, Sydney, New South Wales, Australia 2000) 1980. Seed surface structure in the genus Zieria Sm. (Rutaceae). Telopea 2 (1): 85-112.-Seed surface structure of 119 samples representing 23 species of Zieria is examined, using the scanning electron microscope. Forty surface patterns are distinguished; thirty-eight are ridged, one is tuberculate and one colliculate-ribbed. The ridged surface patterns can be classified into three major groups and a number of subgroups on the basis of structural similarities. The taxonomic significance of the seed surface morphology is assessed by comparison with newly circumscribed taxonomic entities recognized on other morphological grounds by Armstrong. There is considerable concurrence between the seed data and the taxonomic entities but it is not universal. It is concluded that seed surface features provide a useful basis for distinguishing species and subspecies in only some instances within this genus. The close relationship indicated by general morphology within certain groups of taxa is supported by the seed data although, in general, phylogenetic conclusions cannot be based solely on seed surface structure.

show abstract

Section: Introductionmentioning

confidence: 99%

Seed surface structure in the genus Zieria Sm. (Rutaceae)

Powell¹,

Armstrong²

1980

Telopea

View full text Add to dashboard Cite

show abstract

“…Echlin (1968) showed the effectiveness of scanning electron micrographs in illustrating the seed coat of two subspecies of Arenaria ciliata. Echlin (1968) showed the effectiveness of scanning electron micrographs in illustrating the seed coat of two subspecies of Arenaria ciliata.…”

Section: Discussion-thementioning

confidence: 99%

Seed Coat Morphology in Cordylanthus (Scrophulariaceae) and its Taxonomic Significance

Chuang¹,

Heckard²

1972

American Journal of Botany

View full text Add to dashboard Cite

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.A B S T R A C T A study of seed coat sculpturing in Cordylanthus (Scrophulariaceae-Rhinantheae) using the scanning electron microscope (SEM) shows that seed surface patterns are characteristic and constant for a given species or a group of species. Seeds of 23 species were examined and classified into four types (irregularly crested, deeply reticulate, shallowly reticulate, and irregularly striate) based on differences in the reticulated seed coat. Anatomical studies of sections with the light microscope show that the reticular patterns result from enlargement of the epidermal cells of the integument, followed by formation of characteristic wall patterns through lignification. Seed characters furnish useful data for formulating the taxonomy of Cordylanthus both on the sectional and subsectional level and for the delimitation of certain species. Seed coat morphology offers evidence for including the genus Dicranostegia in Cordylanthus and for maintaining C. hispidus and C. palmatus as separate species. The distinctness of two seed coat types within section Cordylanthus suggests two major phylogenetic lines within this section.

show abstract

“…These include: 1) a simple granular wax crust, 2) wax rods and filaments, 3) wax plates and scales, 4) wax layers and crusts, 5) aggregate wax coatings, and 6) liquid or viscous wax coatings. The excellent depth-of-field obtainable with the scanning electron microscope (even though its resolution does not approach that of the regular instrument) makes it an ideal tool for the study of surface features, as clearly demonstrated by CHAPMAN (1967), ECHLIN (1968), and HESLOP-HARRISON and HESLOP- HARRISON (1969) in their micrographs of leaves, seeds, pollen, etc. The scanning electron-micrographs of isolated cuticles just published by LANG (1969) clearly depict microrelief on both outer and inner surfaces, the latter showing various degrees of ribbing at the junction of the epidermal cells.…”

Section: Prefacementioning

confidence: 99%

Residue Reviews / Rückstands-Berichte

1970

View full text Add to dashboard Cite

The use of the scanning reflection electron microscope in the study of plant and microbial material

Cited by 58 publications

References 31 publications

Seed surface structure in the genus Zieria Sm. (Rutaceae)

Seed surface structure in the genus Zieria Sm. (Rutaceae)

Seed Coat Morphology in Cordylanthus (Scrophulariaceae) and its Taxonomic Significance

Residue Reviews / Rückstands-Berichte

Contact Info

Product

Resources

About