Summary
Phenotypically there appeared to exist no diversity in different individual plants in a population ofCalotropis procera. The diversity in imbibition and germination behaviour of seeds from different plants was revealed only after detailed studies were undertaken. Seeds from six individual plants were collected and stored separately for a period of two years. Ordinarily the seeds of this species did not exhibit any dormancy and were found to germinate immediately after harvest. Two years old seeds did not loose their viability in any of the six lots indicated above. It was discovered that the weight and size of seeds, the rate of imbibition of water, the amount of water imbibed, the loss of water upon drying, the rate of germination, the percentage of germination, and the germination behaviour in continuous illumination and total darkness, all exhibited diversity to some extent in the six lots studied. It was evident that there did not exist seeds exhibiting homogeneous behaviour in a population ofCalotropis procera.
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Chatterji, U. N., andD. N. Sen (1966): Ecology of desert plants and observations on their seedlings. Proc. Indian. Sci. Cong.III (IV) 285–286.
McIntosh, R. P. (1967): An index of diversity and the relation of certain concepts to diversity. Ecology48, 392–404.
Pianka, F. R. (1967): On lizard species diversity: North American flatland desert. Ecology48, 333–351.
Selleck, G. W., R. T. Coupland, andC. Frankton (1962): Leafy spurge in Saskatchewan. Ecol. Mono.32, 1–29.
Sen, D. (1965): Dendroid Euphorbia in Rajasthan. Australian Arid Zone Res. Conf. C, 23–24.
Sen, D. (1968): Leafless Euphorbia on Rajasthan (India) rocks. I. Ecological life-history. Folia Geobot. et Phytotax. bohemoslovaca3, 1–15.
- (1968): Leafless Euphorbia on Rajasthan (India) rocks. II. A study on seed germination and seedling growth. Trop. Ecol. Symposium volume. (In press.)
Sen, D. N., andU. N. Chatterji (1965): Ecological studies onCalotropis procera (Ait.) R.Br. Australian Arid Zone Res. Conf. C, 25–26.
— (1966 a): Ecophysiological observations onEuphorbia caducifolia Haines. Sci. and Cult.32, 317–319.
— (1966 b): Temperature relations ofRuellia tuberosa Linn. österr. Bot. Z.113, 390–394.
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Sen, D.N., Chawan, D.D. & Chatterji, U.N. Diversity in germination of seeds inCalotropis procera R.Br. population. Osterr bot Z 115, 6–17 (1968). https://doi.org/10.1007/BF01373524
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DOI: https://doi.org/10.1007/BF01373524