Record Display for the EPA National Library Catalog

RECORD NUMBER: 14 OF 53

OLS Field Name OLS Field Data
Main Title Comparative Sensitivity of Binucleate and Trinucleate Pollen to Ultraviolet Radiation: A Theoretical Perspective.
Author Flint, S. D. ; Caldwell, M. M. ;
CORP Author Utah State Univ., Logan.;Corvallis Environmental Research Lab., OR.
Year Published 1987
Report Number EPA/600/D-87/007;
Stock Number PB87-147120
Additional Subjects Pollen ; Solar ultraviolet radiation ; Plant(Botany) ; Plant genetics ; Chromosome abnormalities ; Plant physiology ; Sensitivity ; Germination ; Photosynthesis ; Radiation effects ; Angiosperm pollen
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-147120 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 16p
Abstract
Angiosperm pollen shed in the binucleate condition (which is the case for most species) may be more susceptible to UV radiation damage than pollen shed in the trinucleate condition. The speculation is supported by data summarized from the literature which show that trinucleate pollen is more physiologically advanced at the time when it is shed from the anther. The time course of germination, penetration of the stigma, and successful fertilization is thus more rapid in these trinucleate species. The results in less exposure to solar ultraviolet and consequently less damage should be expected. Experiments are needed to test the sensitivity of these pollen types in vivo and to evaluate the efficacy of possible repair mechanisms.