Results 211 to 220 of about 13,795 (256)
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Pollen Viability for Air Pollution Bio-Monitoring
Journal of Atmospheric Chemistry, 2004Biological 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
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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
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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 +2 more
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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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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
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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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Hybrid Tea-rose pollen. II. Inheritance of pollen viability
Euphytica, 1977Pollen viability was evaluated in about 500 seedlings originating from 31 crosses between nine commercial Hybrid Tea-rose varieties. The data indicated that pollen viability was inherited additively.
T. Visser +3 more
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Pollen production and pollen viability in male jojoba plants
Industrial Crops and Products, 2003Jojoba (Simmondsia chinensis (Link) Schneider) is a dioecious wind pollinated shrub native to the Sonora desert of the southwestern USA and Northern Mexico. A comprehensive program for the selection of female cultivars was conducted in Israel for many years. However, selection for male cultivars as pollen sources has largely been neglected. The current
Yiftach Vaknin +2 more
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Viability and storage of bromeliad pollen
Euphytica, 2002Several bromeliad species from two different subfamilies, were used to develop a reliable method to evaluate pollen viability. Pollen germination on a medium containing 20% sucrose, 0.001%H3BO3 and 0.5% agar was comparable to germination on a compatible stigma. Maximum germination was reached within 2 to 10 hours depending on the species. Based on this
E. Parton +5 more
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Declining viability and lipid degradation during pollen storage
Sexual Plant Reproduction, 1994Declining viability of pollen during storage at 24° C in atmospheres of 40% relative humidity (RH) and 75% RH was studied, with special emphasis on lipid changes. Pollens of Papaver rhoeas and Narcissus poeticus, characterized by a high linolenic acid content, were compared with Typha latifolia pollen which has a low linolenic acid content.
van Bilsen, D.G.J.L. +2 more
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