GROWTH FACTORS PRODUCED BY GERMINATING SPORES OF POLYPODIUM VULGARE L.
Article first published online: 2 MAY 2006
Volume 70, Issue 6, pages 1043–1052, November 1971
How to Cite
SMITH, D. L. and ROBINSON, P. M. (1971), GROWTH FACTORS PRODUCED BY GERMINATING SPORES OF POLYPODIUM VULGARE L. New Phytologist, 70: 1043–1052. doi: 10.1111/j.1469-8137.1971.tb04586.x
- Issue published online: 2 MAY 2006
- Article first published online: 2 MAY 2006
- (Received 29 April 1971)
The greater the density that spores are sown the greater the inhibition of spore germination and of protonema development in Polypodium vulgare L. The factor mainly responsible for the inhibition of germination apparently also promotes cell elongation. It does not persist in culture filtrates and is probably a volatile substance. Three other factors have been separated from culture filtrates by means of paper chromatography. All three cause a delay in germination and inhibit cell division but the evidence available suggests that at low concentrations they have a promotive effect on these processes. None of them appears to affect cell elongation.