Abstract
The paper deals with four weeds (Digera muricata, Indigofera cordifolia, Trichodesma amplexicaule andTribulus terrestris) growing on the fields in whichBajra (Pennisetum typhoideum) is cultivated. Studies have been undertaken on the interaction of these weeds on the germination of seeds and seedling growth ofPennisetum typhoideum. The aqueous extracts from these weeds did not prove harmful as far as germination was concerned, although delay in certain cases was evident. The inhibition as well as enhancement of seedling growth was exhibited by extracts of these weeds. The best effect of growth enhancement was indicated byI. cordifolia andT. amplexicaule and that of inhibition byD. muricata andT. terrestris. Comparatively greater toxicity was caused to the first root, but the development of adventitious roots compensated for the retarding effect. Root hair formation was suppressed in the portion which remained in contact with extract, otherwise profuse root hair formation took place in other areas.
Similar content being viewed by others
References
Evenari, M. .. InHandbuch der Pflanzenphysiologie, Springer-Verlag, 1961.
Martin, P. and Rademacher, B. .. “Studies on the mutual influence of weeds and crops,” In:The Biology of Weeds. Ed. J. L. Harper, 1960, pp. 143–52.
Pickering, U. S. and The Duke of Bedford “Effect of crop upon another,”J. Agric. Sci., 1914,6, 136–51.
Sankhla, N., Baxi, D. and Chatterji, U. N. “Eco-physiological studies on arid zone plants. I. Phytotoxic effects of aqueous extracts of Mesquite,Prosopis juliflora DC.,”Curr. Sci., 1965,34, 612–14.
Sen, D. N. and Chawan, D. D. .. “Ecology of desert plants and observations on their seedlings. III. The influence of aqueous extracts ofProsopis juliflora DC. onEuphorbia caducifolia Haines,” (In press).
Singh, S. P... “Presence of growth inhibitor in the tubers of nutgrass (Cyperus rotundus L.),”Proc. Ind. Acad. Sci., 1968,67, 18–23.
Author information
Authors and Affiliations
Additional information
Communicated by Dr. L. D. Kapoor,f.a.sc.
Rights and permissions
About this article
Cite this article
Sen, D.N., Chawan, D.D. & Sharma, K.D. Preliminary observations on the influence of certain weeds on germination and growth ofPennisetum typhoideum rich. Proc. Indian Acad. Sci. 70, 111–117 (1969). https://doi.org/10.1007/BF03052219
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF03052219