Results 261 to 270 of about 199,462 (316)

Multiple origins of the apple seed microbiome: disentangling sexual and asexual transmission pathways. [PDF]

Environ Microbiome
Faticov M, Tack AJM, Köberl D, Berg G, Abdelfattah A.   +4 more
europepmc   +1 more source

Two Species Whose Ranges Are Shifting Uphill Are Not Pollen Limited, But Are More Successful Selfers Than Two Non-Shifting Species. [PDF]

Ecol Evol
Osmolovsky I, Botti-Anderson JM, Chiarenza GM, Xirocostas ZA, Slavich E, Moles AT.   +5 more
europepmc   +1 more source

[POLLEN CALENDAR AND POLLEN FORECAST].

Lijecnicki vjesnik, 1996
openaire   +1 more source

Open letter: A call to integrate plant regeneration into sustainability science and policy

PLANTS, PEOPLE, PLANET, EarlyView.
Fernando A. O. Silveira, Angelino Carta, Roberta L. C. Dayrell, Eduardo Fernández‐Pascual, Magda Garbowski, Thomas Hornick, Jitka Klimešová, Lotte Korell, Emma Ladouceur, Julie Larson, Alexandra N. Muellner‐Riehl, Ana Prohaska, Sergey Rosbakh, Christoph Rosche, Christiane Roscher, Mandy Slate, Jeronimo Vazquez‐Ramirez   +16 more
wiley   +1 more source

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Studies on pollen and pollen extracts

Journal of Allergy, 1931
Summary Skin sensitivity to pollen extracts has been demonstrated in actively immunized rabbits using trypan blue as an aid, after the method of Ramsdell. The reaction is specific, and is more delicate than the precipitin test as indication of an immune response of the animal.
Hobart W Cromwell, Marjorie B Moore
openaire   +2 more sources

Pollen viability and pollen vigor

Theoretical and Applied Genetics, 1991
Investigations were carried out to correlate pollen viability, assessed on the basis of a fluorochromatic reaction (FCR) test, with pollen vigor, assessed on the basis of the time taken for in vitro germination in pollen grains subjected to high humidity (>95% RH) and temperature (38 °C) or storage stress of Nicotiana tabacum, Agave sp., Tradescantia ...
K R, Shivanna, H F, Linskens, M, Cresti
openaire   +2 more sources

Staining Germinating Pollen and Pollen Tubes

Stain Technology, 1958
Germinating pollen on stigmas and pollen tubes in styles of Antirrhinum, Brassica, Oenothera, Raphanus, Rosa, solatium and Tagetes spp. were prepared for examination as follows: The styles were fixed in ethyl alcohol-acetic acid 3:1 for 1 hr, and hydrolyzed at 60°C for 5 to 60 min (depending on the species) in 45% acetic acid.
L A, DIONNE, P B, SPICER
openaire   +2 more sources

Pyrrolizidine alkaloids in pollen and pollen products

Molecular Nutrition & Food Research, 2010
AbstractRecently, 1,2‐dehydropyrrolizidine alkaloid (PA) ester alkaloids, found predominantly as their N‐oxides (PANOs, pyrrolizidine N‐oxides), have been reported in both honey and in pollen obtained directly from PA plants and pollen loads collected by bees, raising the possibility of health risks for consumers of these products.
Michael, Kempf, Sandra, Heil, Iris, Hasslauer, Lukas, Schmidt, Katharina, von der Ohe, Claudine, Theuring, Annika, Reinhard, Peter, Schreier, Till, Beuerle   +8 more
openaire   +2 more sources

Pollen

Experientia, 1993
This review deals first with basic knowledge about pollen, especially its biology, morphology and physiology, and then discusses the connection of pollen with medical problems such as hay fever (pollinosis). The next sections cover the historical development of methods for trapping and counting airborne pollen grains to produce reliable quantitative ...
openaire   +2 more sources

The Pollen and Pollen Tube

1960
In 1694, Camerarius reported that anthers play the role of male sexual organs in plants (Maheshwari, 1950). Later, AMICI observed pollen tubes travelling through the stigma and style of Portulaca oleracea and in 1830 he concluded that pollen tubes elongate and ultimately come in contact with the ovule (Maheshwari, 1950). Since then the work of numerous
B. M. Johri, I. K. Vasil
openaire   +1 more source