Results 11 to 20 of about 1,117,122 (295)
Pollen morphology of Andrographideae (Acanthaceae)
Review of Palaeobotany and Palynology, 1992 Abstract Pollen morphology of Andrographis Wallich, Cystacanthus T. Anderson, Diotacanthus Bentham, Gymnostachyum Nees, Haplanthus Nees and Phlogacanthus Nees from Andrographideae (Acanthaceae) is described and illustrated. Pollen morphological variation is compared to accepted generic limits.
SCOTLAND, R
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Pollen morphology of Contortae (Acanthaceae)
Botanical Journal of the Linnean Society, 1993 Variation in pollen morphology is described and illustrated for 36 genera of Acanthaceae with contorted corolla aestivation. A parsimony analysis of pollen characters is presented.
SCOTLAND, R
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Pollen morphology of Monsonia [PDF]
South African Journal of Botany, 1986 The pollen morphology of all 25 species of Monsonia L. (Geraniaceae) has been studied. The pollen grains are tricolpate, subprolate to spheroidal. The exine structure is reticulate. The nexine consists only of nexine 1 (footlayer). The pollen of Monsonia species cannot be identified to species level. They have to be assigned to pollen types or subtypes.
Verhoeven, R.L., Venter, H.J.T.
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Effect of climate, anther morphology and pollination syndrome on pollen availability in Penstemon
Journal of Pollination Ecology, 2023 Traditionally, pollen presentation is thought to be a function of pollinator type and visitation frequency. However, despite the repeated observation that pollen presentation is influenced by flower morphology and abiotic factors, these aspects have been
Rosa A Rodríguez-Peña, Andrea D. Wolfe
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Botanical Sciences, 2020 Background: Although pollen morphology has always been an important tool in plant systematics, the possibility of distinguishing between related taxa is still debated. A difficult case is the cycads, where their morphology and small size is very similar.
Andrew P. Vovides +4 more
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Pollen Morphology and Taxonomy in the Loganiaceae [PDF]
Grana Palynologica, 1967 The Loganiaceae is a heterogeneous, eurypalynous family with colpate, colporate or porate pollen grains (Erdtman 1952). Some years ago Dr. Leeuwenberg, specialist in the taxonomy of African Loganiaceae, asked the senior author to undertake an investigation of the pollen grains of that family.
Punt, W., Leenhouts, P.W.
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Pollen morphology and anatomy of Rubus L. (Rosaceae) in Thailand
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2023 Pollen morphology and anatomy were investigated in 19 species of the genus Rubus L. from Thailand by observation and analysis under a light microscope and a scanning electron microscope.
Kasan HANCHANA +2 more
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PLoS ONE, 2023 Modern agricultural biotechnologies, such as those derived from genetic modification, are solutions that can enable an increase in food production, lead to more efficient use of natural resources, and promote environmental impact reduction.
Daniel Soares +6 more
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Gelechiidae Moths Are Capable of Chemically Dissolving the Pollen of Their Host Plants [PDF]
, 2011 Background: Many insects feed on pollen surface lipids and contents accessible through the germination pores. Pollen walls, however, are not broken down because they consist of sporopollenin and are highly resistant to physical and enzymatic damage. Here
Li, Yongquan +4 more
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Pollen morphology of the alangiaceae [PDF]
Review of Palaeobotany and Palynology, 1970 This paper presents a pollen-morphological study of Alangium, a genus mainly restricted to the tropics of the Old World, of which 18 of the 19 known species were studied. The pollen grains, studied with the use of a light microscope, a transmission electron microscope and a scanning electron microscope, were classified into 15 pollen types, to which a ...
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