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 |
Checkout Status |
NTIS |
PB87-147120 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |
Supplementary Notes |
Sponsored by Corvallis Environmental Research Lab., OR. |
PUB Date Free Form |
Jan 87 |
Category Codes |
57C; 57H |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
709319431 |
Origin |
NTIS |
Type |
CAT |