Results 241 to 250 of about 18,559 (286)
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A method to estimate pollen viability from pollen size variation
American Journal of Botany, 2002The mean diameter of viable pollen grains is approximately 13 μm greater than the mean diameter of inviable grains in Mimulus guttatus. We show that this difference is large enough to be detected by particle counters and that these machines can be used to obtain a rapid estimate of pollen viability.
John K Kelly
exaly +3 more sources
Pollen Viability for Air Pollution Bio-Monitoring
Journal of Atmospheric Chemistry, 2004 Biological characterization of Corylus avellana L. and Pinus nigra L. pollen samples was carried out to determine the actual value of pollen as a bio-indicator of the effects of atmospheric pollution, using samples from plants naturally developed in sites controlled for air pollution.
Gottardini, Elena +4 more
openaire +5 more sources
South African Journal of Botany, 2012 The fate of pollen and pollen tubes can have a profound effect on fruit and seed production. Experiments were conducted to investigate pollen viability, in vitro pollen germination and in vivo pollen tube growth in the biofuel seed crop Jatropha curcas ...
H A Abdelgadir +2 more
exaly +2 more sources
THE RELATIONSHIP OF STORAGE AND VIABILITY OF LILY POLLEN
Acta Horticulturae, 2003The study was conducted to estimate the pollen viability of eight lily genotypes and optimum storage conditions. Pollen viability was assessed by in vitro germination, FCR (Fluorochromatic raction) test and fruit set test. Pollen grains were stored in the dark chamber where the temperature was maintained at 4 °C, -20 °C, and ?70 °C and ambient room ...
Rhee, H.K. +3 more
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Effects of Boron on Pollen Viability in Wheat
Plant and Soil, 1993Grain set failure in wheat, caused by boron (B) deficiency, is associated with poorly developed pollen and anthers. This paper presents results of a study of the effect of B on pollen viability when it was supplied “internally” through the roots and externally in an agar medium for in vitro germination.
C. Cheng, B. Rerkasem
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2018
Abstract Pollen viability is essential for success in pollination. Fresh pollen shed from flowering male inflorescences has the highest viability, and it is this which is harvested and stored (Ekaratne and Senathirajah, 1983). Viability tests are carried out prior to processing pollen to ensure the harvested pollen has high viability, and again
U. Setiawati +4 more
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Abstract Pollen viability is essential for success in pollination. Fresh pollen shed from flowering male inflorescences has the highest viability, and it is this which is harvested and stored (Ekaratne and Senathirajah, 1983). Viability tests are carried out prior to processing pollen to ensure the harvested pollen has high viability, and again
U. Setiawati +4 more
openaire +1 more source
1992
Viability means ability to live; but pollen viability connotes the ability of pollen to complete post-pollination events and to effect fertilization. In the old literature the terms pollen viability and pollen sterility were often used interchangeably.
K. R. Shivanna, N. S. Rangaswamy
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Viability means ability to live; but pollen viability connotes the ability of pollen to complete post-pollination events and to effect fertilization. In the old literature the terms pollen viability and pollen sterility were often used interchangeably.
K. R. Shivanna, N. S. Rangaswamy
openaire +1 more source
Membrane State and Pollen Viability
Annals of Botany, 1981The relationship between germinability and fluorochromasia (FCR) has been studied in pollen of eight genera, Secale, Iris, Carex, Eleocharis, Cytisus, Digitalis, Plantago and Lonicera. The FCR tests two properties of the pollen, (a) the integrity of the plasmalemma of the vegetative cell and (b) the presence of an esterase capable of cleaving the ...
K. R. SHIVANNA, J. HESLOP-HARRISON
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Sugarbeet Pollen Viability Indicators
Journal of Sugarbeet Research, 1989Ten fluorochromes and seven stains were evaluated as indicators of viability of sugarbeet (Beta vulgaris) pollen. The reactions of these materials were com pared with in vitro germination of pollen in a liquid medium. Among these 17 materials, fluorescein diacetate (FDA), 3-(4,S-Dimethylthiazol-2-yl)-2,S diphenyl-2H-tetrazolium bromide (MTT), and ...
R.J. Hecker, M. McClintock
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Papaya pollen viability and storage
Scientia Horticulturae, 1989Abstract Papaya pollen viability, tube growth and storage were studied. Pollen germination on a drop of modified Brewbaker medium at 22–26°C closely reflected in vivo germination. Two vital stains gave pollen viability estimates that correlated closely with pollen germination percentage.
E. Cohen, U. Lavi, P. Spiegel-Roy
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