NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT
Journal of the Faculties of Science and Agriculture, Delta State University, Abraka, Nigeria

ISSN: 1119-9008
DOI: 10.5987/UJ-NJSE
Email: njse@universityjournals.org


GERMINATION BEHAVIOUR OF CROTON LOBATUS L., EMILIA SONCHIFOLIA L. AND S. ANTHELMIA L.

DOI: 10.5987/UJ-NJSE.17.094.1   |   Article Number: 93880D17   |   Vol.12 (1) - May 2013

Author:  Chukwu M. N.

Studies on germination of C. lobatus, E. sonchifolia, and S. anthelmia were carried out in the laboratory. The influence of 12hour L – D photoperiod and continuous darkness, soaking in water, soil moisture, water soluble extracts of plants’ leaves and temperature on the germination of the seeds of the weed species were examined. Light enhanced the germination of E. sonchifolia seeds, but inhibited those of C. lobatus and S. anthelmia seeds. Soaking increased the percentage germination of S. anthelmia seeds while aqueous extracts of their leaves inhibited or enhanced the germination of their seeds. Their percentage germination increased with decreasing soil moisture regime 20 % soil moisture being the most favorable for germination.

Baksin, J. M. and Baksin, C. C. (1989). Germination Responses of buried Seeds of

Capsella bursa-pastoris exposed to seasonal temperature Changes. Weed

Research 29 (3): 205-212

Benvenuti, S., Machia, M. and Miele, S. (2001). Light, Temperature and Burial depth Effects on Rumex obtusitolius seed Germination and Emergence.

Weed Research 41(2): 177-186.

Bhagirath, S. C., and David, E. J. (2010). Growth and Reproduction of

Junglerice (Echinochloa colona) in Response to water stress. Weed Science 58 (2): 132-135

Clewis, S. B., Jordan, D. L., Spears, J. F. and Wilcut, J. W. (2004). Influence of Environmental Factors on cut leaf evening primrose (Oenothera laciniata).

Germination, Emergence, Development, Vegetative Growth and control.

Weed Science 55 (3): 264-272

Crutwell, R. W. (1972). The insects of Eupatorium odoratum L in Trinidad and their potentials as agents for biological control. PhD thesis, Trinidad University of the West Indies, St. Augustine,

Guyme, D. C. and Murray, R. B. (1985). Weed Biology and Control in Agriculture and Horticulture. Batsford Academics and Educational, London.

Haran, S. S., Senarathine, E. O. and Sagakkara, R. (2008). Influence of Selected Environmental Factors on seed Germination and Emergence of major weed species in coconut plantation of Sri Lanka. Abstracts of 5th International Weed Science Congress held in Vancouver.

Joshi, B., Sarika, N. P. and Rao, B. P. (2009). Allelopathic Effects of Weed species Extracts on Germination, Growth and Biochemical aspects in varaities of Weeds (Triticum aestivum L.). Indian Journal of Agricultural Research 43 (2): 79-81

Kamal, J., Bano, A., Riaz, M. and Azam, Q. I. (2008). Allelopathic Potential of Sunflower Plant (Helianthus annus L.) on soil metals and its leaves’ extracts on physiology of wheat (Triticum aestivum L.). Abstracts of 5th International Weed Science Congress held in Vancouver.

Khan, M. A. and Gluzar, S. (2003). Light, Salinity and Temperature effects on the seed germination of perennial grasses. American Journal of Botany 90: 131-134.

Oriega, E. Z. and Nasca, Z. P. (2005). Early Growth of Bindweed (Ipomea species) Radical system under water deficient condition. Biocell 29 (1): 80

Saeed, S. (2011). Allelopathic effects of Xanthium strumarium L. Research on Crops 12 (3): 783-788.

Rice, E. L. (1979). Allelopathy: An Update The botanical Review 45: 15-109

Singh, M. and Sharma, S (2008). Effects of Environmental Factors on the

Gernination of Ipomea purpurea. Abstracts of 5th International Weed Science Congress held in Vancouver.

Tang, D., Hamayun, M., Khan, S. J., Na waz, Y., Irshad, M., Na, Y. and Lee, I. (2012). Exposure to red light, temperature and exogenous gibberellins influenced germination of some serious winter weeds. African Journal of Biotechnology 11 (2): 273-279.

Tang, D. and Pork, K. (2008). The role of temperature, Nitrogen containing compounds Gibberellins and red light in seed germination of winter annuals.

Abstracts of 5th International Weed Science Congress held in Vancouver.

Xuan, T. D. and Tsuzuki, E. (2001). Effects of Application of Alfalfa pellet on Germination and Growth of Weeds. Journal of Crop Production 4: 303-312.

Zhou, J. D., Deckard, E.I. and Arhens, W.H. (2005). Factor affecting germination of hairy nightshade (Solanum sarrachoides) seeds. Weed Science 53 (1): 41-45.