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Related Experiment Video

Updated: May 6, 2026

Author Spotlight: A High-Resolution, Single-Grain, In Vivo Pollen Hydration Bioassay for Arabidopsis thaliana

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Pollen viability and pollen vigor.

K R Shivanna¹, H F Linskens, M Cresti

¹Department of Botany, University of Delhi, 110007, Delhi, India.

TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik

|November 14, 2013

Summary

Pollen vigor, not just viability, is crucial for plant reproduction, especially under stress. This study shows stress impacts vigor before viability, highlighting the need for better assessment methods for stored pollen.

Area of Science:

Plant reproductive biology
Seed and pollen science
Stress physiology in plants

Background:

Pollen viability and vigor are critical for plant reproduction and crop yield.
Current methods for assessing pollen quality may not adequately capture stress-induced changes.
Understanding pollen response to environmental stress is essential for conservation and breeding programs.

Purpose of the Study:

To correlate pollen viability, assessed via fluorochromatic reaction (FCR) test, with pollen vigor.
To evaluate the impact of high humidity, high temperature, and storage stress on pollen vigor and viability.
To investigate these effects across diverse plant species: Nicotiana tabacum, Agave sp., Tradescantia virginiana, and Iris sp.

Main Methods:

Pollen viability was assessed using the fluorochromatic reaction (FCR) test.

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Pollen vigor was determined by measuring the time for in vitro germination.

Pollen samples were subjected to controlled high humidity (>95% RH) and temperature (38 °C), as well as storage stress.

Main Results:

Both high humidity/temperature and storage stresses impacted pollen vigor before affecting pollen viability.
The timing of stress effects differed between vigor and viability.
Species-specific responses to stress may exist, warranting further investigation.

Conclusions:

Pollen vigor is a more sensitive indicator of stress than pollen viability.
Current assessment methods may be inadequate for detecting stress-induced declines in pollen quality.
There is a critical need to consider pollen vigor, especially for stored pollen, and to develop improved assessment techniques.