Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effects of CO2 and Temperature on Five Rice Cultivars.
Author Olszyk, D. ; Wise, C. ; Werakoon, W. M. ;
CORP Author Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis.
Publisher 1992
Year Published 1992
Report Number EPA/600/A-92/290;
Stock Number PB93-141158
Additional Subjects Rice plants ; Air pollution effects(Plants) ; Atmospheric temperature ; Carbon dioxide ; Root systems ; Climatic changes ; Global warming ; Plant growth ; Ecology ; Cultivation ; Statistical analysis ; Leaves(Botany) ; Stems(Botany) ;
Library Call Number Additional Info Location Last
NTIS  PB93-141158 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/12/1993
Collation 6p
To obtain information for more detailed studies of how rice responds to climate change, plants of three high tillering (IR30, IR52, IR74) and two low tillering cultivars (Azucena and IRAT 104) were grown under controlled environment conditions for 28 days. Across all rice cultivars, a 300microL/L increase in CO2 simulated root growth more than shoot growth, but neither leaf nor stem weight and leaf or tiller number was affected by CO2. In contrast, increasing temperature of 6C for 28/22C stimulated shoot but inhibited root growth, resulting in a significant increase (38 to 69%) in leaf number but a significant decrease (32 to 48%) in root/shoot ratio and nonsignificant changes for other parameters. Cultivars responded similarly to CO2 or temperature; there were no significant CO2 x cultivar or temperature x cultivar interactions. However, rice cultivars responded differently to the same environment; IRAT 104 plants tended to have lower dry weights and tiller numbers than the IR cultivars with Azucena as intermediate. Azucena had lower root/shoot ratios than the other cultivars.