Record Display for the EPA National Library Catalog

RECORD NUMBER: 48 OF 152

OLS Field Name OLS Field Data
Main Title Effects of Ultraviolet-B Radiation on the Growth and Yield of Crop Plants.
Author Teramura, A. H. ;
CORP Author Maryland Univ., College Park. Dept. of Botany.;Corvallis Environmental Research Lab., Or.
Year Published 1983
Report Number EPA-R-808035; EPA-600/J-83-109;
Stock Number PB84-124908
Additional Subjects Plants(Botany) ; Ultraviolet radiation ; Anatomy ; Growth ; Farm crops ; Physiological effects ; Morphology ; Yield ; Reprints ;
Holdings
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Status
NTIS  PB84-124908 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 16p
Abstract
The paper reviews growth chamber, greenhouse, and field studies on the effects of ultraviolet B (UV-B, between 280 and 320 nm) radiation on agricultural crop plants. The understanding of the physiological effects of UV-B radiation comes primarily from growth chamber studies where UV-B is artificially supplied via filtered lamps. Both photosystems I and II, as well as carboxylating enzymes, are sensitive to UV-B radiation. Ultraviolet B radiation also affects stomatal resistance, chlorophyll concentration, soluable leaf proteins, lipids, and carbohydrate pools. In general, the effects of UV-B radiation are accentuated by the low levels of visible radiation typically found inside growth chambers. Ultraviolet-B radiation has also been shown to affect anatomical and morphological plant characteristics. Commonly observed UV-B induced changes include plant stunting, reductions in leaf area and total biomass and alterations in the pattern of biomass partitioning into various plant organs.