||Partial Inhibition of In vitro Pollen Germination by Simulated Solar Ultraviolet-B Radiation.
Flint, S. D. ;
Caldwell, M. M. ;
||Utah State Univ., Logan.;Corvallis Environmental Research Lab., OR.;National Aeronautics and Space Administration, Washington, DC.
Ultraviolet radiation ;
Solar radiation ;
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Pollen from four temperate-latitude taxa were treated with UV radiation in a portion of the UV-B (280-320 nm) waveband during in vitro germination. Inhibition of germination was noted in this pollen compared to samples treated identically except for the exclusion of the UV-B portion of the spectrum. Levels similar to maximum solar UV-B found in temperate-latitude areas failed to inhibit pollen germination significantly, while levels similar to maximum solar UV-B found in equatorial alpine locations caused partial inhibition of germination in three of the four taxa examined. (Copyright (c) 1984 by the Ecological Society of America.)