Environmental Parameters Affecting Dark Response of Rice Seedlings (Oryza sativa L.) to Triacontanol
- 1 May 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 61 (5) , 851-854
- https://doi.org/10.1104/pp.61.5.851
Abstract
Triacontanol [from Medicago sativa] applied to IR-8 rice (O. sativa L.) seedlings in nutrient solution caused an increase in dry weight during a 6 h dark period. This increase was altered by atmospheric CO2 and O2 concentrations. The largest growth response occurred from 200-350 .mu.l/l CO2 with 5% O2. The treated seedlings did not fix atmospheric CO2 in the dark and the immediate products of photosynthesis were not involved in the dry weight increase. The growth response was characterized by an increase in soluble and insoluble Kjeldahl-N and soluble carbohydrates. The response curve for dry weight increase was a linear function of log presentation time of triacontanol. The response exhibited an apparent Ddose [rate constant] of 25 min in 10 .mu.g/l triacontanol in the dark and 18 min in the light. Concentrations of 50 .mu.g/l and higher inhibited growth.This publication has 4 references indexed in Scilit:
- Triacontanol: A New Naturally Occurring Plant Growth RegulatorScience, 1977
- The biochemistry of plant cuticular lipidsProgress in the Chemistry of Fats and other Lipids, 1973
- NITROGEN DETERMINATION BY A CONTINUOUS DIGESTION AND ANALYSIS SYSTEMAnnals of the New York Academy of Sciences, 1960
- The isolation of n-triacontanol from lucerne waxBiochemical Journal, 1933