Summary
The seeds ofAsteracantha longifolia prefer germinating in light. Germination was also favoured in blue and red lights, whereas total darkness delayed this process. The optimum temperature for germination of seeds was 29° C in continuous white light. The seeds did germinate in total darkness as well, but the percentage of germination remained poor, and with high temperatures beyond 30° C, the pace of germination became slow. Higher temperatures suppressed the seedling growth both in continuous white light and total darkness. Blue and red lights promoted hypocotyl growth, whereas radicle was inhibited.
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References
Alcorn, S. M., andE. B. Kurtz: Some factors affecting germination of seed of the Saguaro cactus (Carnegia gigantea). Amer. Jour. Bot.46, 525–529 (1959).
Chawan, D. D., and D. N.Sen: Role of some growth regulating substances on secd germination and seedling growth of Asteracantha longifoliaNees. In press.
Jones, M. B., andL. F. Bailey: Light effects on the germination of seeds of henbit (Lamium amplexicaule). Plant Physiol.31, 347–349 (1956).
Koller, D., A. M. Mayer, A. Poljakofff-Mayber andS. Klein: Seed germination. Ann. Rev. Plant Physiol.13, 437–464 (1962).
Toole, E. H., V. K. Toole, H. A. Borthwick andS. B. Hendricks: Interaction of temperature and light in germination of seeds. Plant Physiol.30, 473–478 (1955).
————: Effect of temperature on germination of light sensitive seeds. Proc. Intern. Seed Testing Assoc.22, 1–9 (1957).
Sen, D. N.: Studies in the hydrophytes of Gorakhpur: Observations on the anatomico-physiological characters of Asteracantha longifoliaNees. — II. Proc. Nat. Acad. of Sci. B31, 224–234 (1961).
Sen, D. N., andU. N. Chatterji: Temperature relations of Ruellia tuberosaLinn. Österr. Bot. Z.113, 390–394 (1966).
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Sen, D.N., Chawan, D.D. Role of light and temperature in relation to seed germination and seedling growth ofAsteracantha longifolia Nees. Osterr bot Z 118, 226–232 (1970). https://doi.org/10.1007/BF01377859
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DOI: https://doi.org/10.1007/BF01377859