scholarly journals New Data on Seed Coat Micromorphology of Several Impatiens spp. from Northeast India

2020 ◽  
Vol 89 (3) ◽  
Author(s):  
Agnieszka Rewicz ◽  
Wojciech Adamowski ◽  
Souravjyoti Borah ◽  
Rajib Gogoi
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Seed Coat ◽  
Northeast India ◽  
Epidermal Cells ◽  
Diagnostic Character ◽  
Lack Of Information ◽  
Metric Traits ◽  
Scanning Electron

This study aimed to analyze the seed coat structure of nine species from the genus <em>Impatiens </em>from Northeast India. A review of the available literature showed a scarcity of data on seed sizes and shapes, as well as a complete lack of information on the ultrastructure of seeds from five taxa of <em>Impatiens </em>determined with a scanning electron microscope (SEM). Photographs of the surface structure of seeds from the analyzed species were taken using an SEM and, from these, we measured the length and width of the seeds. The results showed differences in the seed ultrastructure and metric traits within the studied taxa. Based on the ornamentation of the epidermal cells, we distinguished three morphological types: protrusive, granulate, and reticulate. The seeds of the investigated species had ellipsoid, subellipsoid, or subspheroid shapes. Their lengths and widths ranged from 1.2 to 3.6 mm and 0.7 to 2.1 mm, respectively. The results of the study showed that the ultrastructures of <em>Impatiens </em>seeds are different among taxa and for some species can be used as a diagnostic character for their identification.

Surface structure of the conidium and conidiophore of Stemphylium botryosum

1973 ◽  
Vol 19 (3) ◽  
pp. 392-393 ◽  
Author(s):  
Michael Corlett
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Stemphylium Botryosum ◽  
Scanning Electron

Observations with the scanning electron microscope reveal tuberculate prominences up to 0.75 to 1.0 μ high and 0.5 μ wide on the suface of the conidium. The prominences are 1.0 to 1.5 μ apart and in the mature conidia have flattened cap-like tops. The swollen tips of the conidiophores are finely warted.

Surface structure of dermatophytes as seen by the scanning electron microscope

1969 ◽  
Vol 7 (3) ◽  
pp. 270-272 ◽  
Author(s):  
Y. Ito ◽  
Y. Nozawa ◽  
H. Suzuki ◽  
T. Setoguti
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Scanning Electron

scholarly journals Seed micromorphological study on endemic and subendemic species of Veronica L. (Plantaginaceae Juss.) in Iran

2019 ◽  
Vol 26 (2) ◽  
pp. 315-324
Author(s):  
Soghra Ramzi ◽  
Shahryar Saedi-Mehrvarz
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Seed Coat ◽  
Seed Morphology ◽  
Seed Shape ◽  
Sem Micrographs ◽  
Qualitative And Quantitative ◽  
Quantitative Characters ◽  
Micromorphological Characters ◽  
Scanning Electron

Seed morphology of 12 Iranian endemic and subendemic species of Veronica was studied using scanning electron microscope (SEM). Seven qualitative and quantitative characters were measured using SEM micrographs and stereomicroscopy. The seed shape of most species is ovate and plano-convex. The size of seeds ranges from 1.25 x 0.75 mm in V. khorassanica to 2.5 x 1.75 mm in V. viscosa Boiss. The ornamentation of seed coat is reticulate-verrucate in V. khorassanica, V. czerniakowskiana, V. mazanderanae and V. rubrifolia, reticulate-rugate in V. acrotheca, V. aucheri, V. viscosa and V. intercedens, rugose in V. microcarpa, V. chionantha and V. rechingeri, and reticulate-porate in V. gaubae. The testa cells are polygonal in ten species and irregular in two species. Micromorphological characters of seeds are useful in specific and subspecific delimitations of Iranian Veronica.

The Micro-Structure, Distribution and Possible Function of Peg-Like Setae in Male Coleoptera

1972 ◽  
Vol 3 (1) ◽  
pp. 40-54 ◽  
Author(s):  
P.M. Hammond
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Micro Structure ◽  
Scanning Electron

AbstractThe shape and surface structure of peg-like setae occurring in certain male Staphylinidae and other Coleoptera are described with the aid of a scanning electron microscope. The sites at which these organs are known to occur and the taxa in which they have been found are listed. Their possible function is discussed.

Impatiens nagorum sp. nov. (Balsaminaceae) a new species from Nagaland, Northeast India

Phytotaxa ◽  
2017 ◽  
Vol 308 (2) ◽  
pp. 275
Author(s):  
MOAAKUM MOA ◽  
SANTANU DEY ◽  
WOJCIECH ADAMOWSKI ◽  
RAJIB GOGOI
Keyword(s):  
Electron Microscope ◽  
New Species ◽  
Scanning Electron Microscope ◽  
Pollen Grains ◽  
Northeast India ◽  
Wildlife Sanctuary ◽  
Ecological Information ◽  
A New Species ◽  
Scanning Electron

Impatiens nagorum from Fakim Wildlife Sanctuary, Nagaland, Northeast India, is described and illustrated. Detailed descriptions, distribution, and ecological information, along with colour photographs of the plant, as well as micromorphology of seeds and pollen grains under scanning electron microscope (SEM) are presented.

Methods of onion seed preparation for scanning electron microscope studies of the seed coat

1991 ◽  
Vol 18 (2) ◽  
pp. 207-208 ◽  
Author(s):  
Yasseen Mohamed-Yasseen ◽  
Birute P. Jakstys ◽  
Walter E. Splittstoesser
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Seed Coat ◽  
Onion Seed ◽  
Scanning Electron
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