Results 241 to 250 of about 652,522 (290)

Pollen viability and pollen vigor

open access: yesTheoretical 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, M Cresti, H F Linskens
exaly   +4 more sources

The estimation of pollen viability in rice

open access: yesJournal of Experimental Botany, 1995
Methods for testing pollen viability in rice were evaluated by comparing staining with aniline blue in lactophenol, two tetrazolium salts and fluorescein diacetate with germination in an in vitro culture medium. Staining with thiazolyl blue (MTT) was nicely correlated with germination.
Timothy J Flowers
exaly   +3 more sources

A method to estimate pollen viability from pollen size variation†

American Journal of Botany, 2002
The 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

open access: yesJournal 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
core   +6 more sources

THE RELATIONSHIP OF STORAGE AND VIABILITY OF LILY POLLEN

Acta Horticulturae, 2003
The 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
openaire   +1 more source

Effects of Boron on Pollen Viability in Wheat

Plant and Soil, 1993
Grain 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
openaire   +1 more source

Pollen viability testing.

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
openaire   +1 more source

Membrane State and Pollen Viability

Annals of Botany, 1981
The 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
openaire   +1 more source

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