pollen grains

Listing 1 - 10 from 114 for pollen grains

Key to Arisaemas of Japan
... (4) 3. Spadix appendix within the spathe, cylindrical, obtuse. A. heterocephalum Koidz 3. Spadix appendix long exerted from the spathe, filiforme at apex. A. negishii Makino 4. (2) Pollen grains granulate between spinules (subsect. Tortuosa). Spadix bisexual or male. Terminal leaflet much smaller than adjacent lateral ones. A. heterophyllum Blume 4. Pollen grains smooth between spinules (subsect. ...
botu07.bio.uu.nl

Can North American rose hybridizers safely use pollen from PNRSV infected roses
... in the rose stamens. See footnote (5). The ability to transfer, mechanically, the virus through pollen to indicator plants was reported in 1994. H. Baumgartnerova, Institute of Experimental Phytopathology and Entomology, ... for the second day, which may then be ready for cross-fertilization. However, a few pollen grains remain on the shriveled anthers on the third day; and the stamens should still ...
home.neo.rr.com

PalDat Homepage - worldwide largest database and most comprehensive resource on pollen and palynology
... Last database update: 02-11-2006 Download Here you find downloads to the "Terminology of Pollen and Spores" (see also our Terminology section) and selected basic palynological literature. At the moment ... Formation. Bull. Torrey Bot. Club 60: 470-524. pdf (28,2 MB) Wodehouse R., 1935. Pollen grains. Their structure, identification and significance in science and medicine. McGraw-Hill Book Company, New ...
paldat.botanik.univie.ac.at

Glossary of Pollen and Spore Terminology - Introduction
... a while since the latest edition (LPP Contribution Series No.1, 1994) of the Glossary of Pollen and Spore Terminology. The first three editions of the glossary where drafts, for discussion purpose only ... concise manual of terminology that can be used to clarify the communication of information concerning pollen grains and spores. It is hoped that this will help to make palynological literature more ...
www.biol.ruu.nl

Glossary of Pollen and Spore Terminology - New terms
... sulci and distal disulcate with paired sulci lying parallel to the long axis of the pollen grain on the distal face. Examples: Metroxylon salomonense (Palmae) (equatorial disulcate), Chamaerops humilis (Palmae) (distal ... and saccoid. Comment: This feature is used in the description of pollen in the Perm - Trias. For extant saccate pollen grains don't show this character it is considered to be ...
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Pollen and Spore Images on the Web
... and then search using PalDat's menu system. Images are SEM's of angiosperm or gymnosperm pollen. Index to the PalDat Images "NSW" This extensive collection was developed by maintained by Stuart ... in three papers Martin, Paul S., and Drew, Charles M. 1969. Scanning electron photomicrographs of southwestern pollen grains. Journal Arizona Academy of Sciences 5 (3): 147 - 176. Martin, Paul S., and Drew, ...
www.geo.arizona.edu

Pollen Web Site of the Month
... National de Surveillance Arobiologique (R.N.S.A.) site. This aeroallergy site includes illustrations of pollen grains and plants, a bulletin, which includes color-coded maps of current allergy risks, and ... palynology. The Palynology Web Site of the Month for May, 2001, is the Bangor/Aberystwyth Pollen Image Database maintained by Ian France. This very interesting site presents the "holy grail" of ...
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Fossil and Surface Pollen Data - WDC for Paleoclimatology
... create a Tilia Dictionary for your region of interest based on the pollen-types in the Global Pollen Database. Pollen grains which are washed or blown into lakes can accumulate in sediments ... Commission for Study of the Holocene, Working Group on Data Handling Methods). North American Modern Pollen Data: Whitmore et al. 2005. North American Packrat Midden Database: Southwest USA and Mexico Packrat ...
www.ncdc.noaa.gov

Passiflora pollen
... Image 2005 Paul R.A. West All Rights Reserved Passiflora 'Emil Kugler' anther with pollen. Passiflora pollen grains are of both extraordinary beauty and variety. Despite this there are surprisingly few studies ... with fusiform opercula, and lacks free columellae in the lumina (not examined in TEM ); II. Pollen could be interpreted as 3-colpate with very large ovate opercula, has free columellae in ...
www.passionflow.co.uk

Passiflora pollen adhesion
... , you could make as many different such glues as there are plants." "The force with which pollen grains bind to the female parts of the plant is strong, very species-specific, and happens ... Greir and undergraduate student Ben Zwiebel created a novel tool to measure the strength of the pollen-stigma bond designed using the same principles as an atomic force microscope. The researchers attached a ...
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