Conclusions
The effect of growth hormones obtained from three species of Phormidium (P. foveolarum, P. corium and P. autumnale) has beenstudied on the germination of the paddy seeds. The growth hormonesof P. foveolarum which is common in the paddy fields in natureaccelerates germination and promotes the growth of the seedlings. The beneficial effect however is restricted to low concen _ration ofthe hormone and soaking for a short duration only. Prolongedsoaking in water extract and soaking in ether extract exercises aninjurious effect shown by reduction in percentage germination ofseeds. Hormones from P. corium and P. autumnale on the other handretard germination and growth of seedlings.
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Gupta, A.B., Lata, K. Effect of algal growth hormones on the germination of paddy seeds. Hydrobiologia 24, 430–434 (1964). https://doi.org/10.1007/BF00170414
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DOI: https://doi.org/10.1007/BF00170414