Classification of pollen grain images with MobileNet

2021 ◽  
Author(s):  
Julio Cesar da Silva Soares ◽  
Kelson Romulo Teixeira Aires ◽  
Alan Rafael Ferreira dos Santos ◽  
Rodrigo de M. S. Veras ◽  
Otilio Paulo y ◽  
...  
Keyword(s):  
Pollen Grain

Detection and Classification of Pollen Grain Microscope Images

2020 ◽  
Author(s):  
Sebastiano Battiato ◽  
Alessandro Ortis ◽  
Francesca Trenta ◽  
Lorenzo Ascari ◽  
Mara Politi ◽  
...  
Keyword(s):  
Pollen Grain ◽  
Microscope Images

scholarly journals A Comparison Study of Deep Convolutional Neural Networks for the Classification of Brazilian Savannah Pollen Grains: Preliminary Results

2019 ◽  
Author(s):  
Bruno Aristimunha ◽  
Felipe Silveira Brito Borges ◽  
Ariadne Barbosa Gonçalves ◽  
Hemerson Pistori
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Pollen Grains ◽  
Pollen Grain ◽  
Comparison Study ◽  
Deep Convolutional Neural Networks ◽  
Classification Result ◽  
Brazilian Savannah ◽  
Accuracy Rates

The classification of pollen grains images are currently done manually and visually, being a weariful task and predisposed to mistakes due to human exhaustion. In this paper, the authors introduce an automatic classification of 55 different pollen grain classes, using convolutional neural networks. Different architectures and hyperparameters were used to improve the classification result. Using the networks VGG16, VGG19, and InceptionV3, were obtained accuracy rates over 93.58%.

scholarly journals THE QUALITY OF POLLEN GRAINS IN WHEAT MATURE ANTHERS OF ZHNITSA CULTIVAR IN PLANTA CONDITIONS

ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 24-32
Author(s):  
A.E. Zinatullina ◽  
Keyword(s):  
Pollen Grains ◽  
Pollen Grain ◽  
Mature Pollen ◽  
In Planta ◽  
Spring Soft Wheat ◽  
Resistant Varieties ◽  
Plant Pollen ◽  
Mature Anther

Biotechnological and selection investigations for making of wheat high-yielding resistant varieties require a significant amount of high-quality mature pollen. It is important to assess It is important to assess the quality of pollen grains in mature anthers in planta of the wheat genotypes included in the experiments. In the course of research the analysis of the histological status of mature anthers was carried out and qualitative cytological evaluation inside them pollen grain of spring soft wheat Zhnitsa cultivar was done in in planta conditions. It was shown that the structure of the wall locule anther presented by exothecium and endothecium is typical for cereals. It was established that 3-cell mature pollen grains are fertile (87-92%) and viable (75–80%) in general. At the same time in every mature anther abnormal pollen grains were observed and the cellular, nuclear, cytoplasmic and architectonic deviations from the norm were revealed. On the base of literature date the analysis of the reasons for the formation of abnormal pollen grains in planta was done and the classification of anomalies of plant pollen grains and the terminology used in this field of research were discussed.

scholarly journals Pollen Morphology of Six Indonesian Begonia (Begoniaceae) Species

2021 ◽  
pp. 7-13
Author(s):  
Hartutiningsih M. Siregar ◽  
. Sudarmono ◽  
Joko Ridho Witono ◽  
Hary Wawangningrum
Keyword(s):  
Pollen Morphology ◽  
Polar Axis ◽  
Pollen Grain ◽  
Laboratory Research ◽  
Equatorial Diameter ◽  
Fresh Pollen ◽  
Morphological Differences ◽  
Micrometer Scale

Aims: This study aims to determine pollen morphological differences in six Indonesian Begonia species. Study Design: All fresh pollen grain of six Indonesian Begonia species were collected using a standard method and observed at SEM (Scanning Electron Microscope) Laboratory. Place and Duration of Study: The pollen is collected from Bogor Botanic Gardens, then observed using an SEM in The Museum Zoologicum Laboratory, Research Center for Biology, Indonesian Institute of Sciences (LIPI), on August 2018. Methodology: The results of SEM pollen ultrastructure observations were analyzed descriptively by describing images of size, P/E index, aperture, endoaperture, and ornamentation of pollen. The size of pollen morphology is calculated based on the length of the polar axis and the equatorial axis on a micrometer scale. Determination of the shape of pollen can be determined by comparing the length of the polar axis with the equatorial axis. Results: All species examined share common pollen grain characters, i.e. isopolar and three zonocolporate. The longest polar axis (P) and equatorial diameter (E) presented by B. puspitae, whereas the shortest of P is shown by B. kudoensis and the shortest of E by B. sudjanae. Only B. hooveriana has prolate – perprolate aperture, whereas other species perprolate. Endoaperture types of B. puspitae, B. sudjanae, and B. hooveriana is lalongate, while the other species is lolongate. The coarsely striate ornamentation forms are presented by B. holosericeoides and B. natunaensis, whereas other species has fine striate ornamentation. Conclusion: The size, P/E index, aperture, endoaperture, and ornamentation of pollen are not useful for section classification of six Indonesian Begonia species. Pollen morphology should be incorporated to other characters, such as morphological, cytological, and molecular characters for making delimitation of Begonia species.

scholarly journals Pollen morphology and systematics in two subfamilies of Ericaceae: Cassiopoideae and Harrimanelloideae

1970 ◽  
Vol 16 (1) ◽  
pp. 37-46 ◽  
Author(s):  
A.K.M. Golam Sarwar ◽  
Hideki Takahashi
Keyword(s):  
Electron Microscopy ◽  
Pollen Morphology ◽  
Pollen Grain ◽  
Character State ◽  
Exine Sculpture ◽  
Transmission Electron ◽  
Close Relationship ◽  
Plant Taxon ◽  
Recent Classification

Pollen morphology of two subfamilies of Ericaceae, Cassiopoideae and Harrimanelloideae, was studied using light microscopy (LM), scanning electron microscopy (SEM), and also, for selected species, transmission electron microscopy (TEM). The systematic significance of new palynological data is discussed in the light of the recent classification of Ericaceae. The Cassiopoideae are stenopalynous; the four 3-aperturate grains are united in compact minute tetrads with striate apoclopial exine sculpture. Infra- and inter-specific variations have been observed in some palynological features of Cassiope, this might be due to geographical distribution. The Harrimanelloideae pollen grain is characterized by minute tetrahedral tetrads with coarsely rugulate to psilate apoclopial exine sculpture and perforated septum. Pollen morphology supports the subfamilial status of Cassiopoideae and Harrimanelloideae, and the close relationship between the members of subfamily Harrimanelloideae and Vaccinioideae. The secondary sculpture on the exine surface might be a synapomorphic palynological character state for Harrimanelloideae + Styphelioideae + Vaccinioideae clade. Keywords: Pollen morphology; Systematics; Cassiopoideae; Harrimanelloideae; Ericaceae.  DOI: 10.3329/bjpt.v16i1.2745 Bangladesh J. Plant Taxon. 16(1): 37-46, 2009 (June)

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

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