Abstract
Indole-3-acetic acid (IAA) in highly purified extracts of rose achenes (Rosa rugosa var rubra) was quantified by means of ion-pair reversephase high performance liquid chromatography with spectrofluorimetric detection. Changes in IAA content were determined during a 14-week 4°C stratification, which leads to dormancy breakage, and during subsequent germination at 17°C. IAA was also determined in achenes stratified in parallel at 17°C, which does not induce release from dormancy. IAA decreased during the first 2 weeks of stratification both at 4°C and at 17°C. IAA remained low during the remaining 12 weeks of stratification at 4°C, whereas it continued to decrease in achenes kept at 17°C. An immediate increase in IAA during germination was followed by transients in the IAA level. The results suggest that IAA is without a regulating role in dormancy release although it seems to be involved in the germination process.
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Selected References
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- Epstein E., Cohen J. D., Bandurski R. S. Concentration and Metabolic Turnover of Indoles in Germinating Kernels of Zea mays L. Plant Physiol. 1980 Mar;65(3):415–421. doi: 10.1104/pp.65.3.415. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nowacki J., Bandurski R. S. Myo-Inositol Esters of Indole-3-acetic Acid as Seed Auxin Precursors of Zea mays L. Plant Physiol. 1980 Mar;65(3):422–427. doi: 10.1104/pp.65.3.422. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tillberg E. Indoleacetic Acid Levels in Phaseolus, Zea, and Pincus during Seed Germination. Plant Physiol. 1977 Aug;60(2):317–319. doi: 10.1104/pp.60.2.317. [DOI] [PMC free article] [PubMed] [Google Scholar]