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The Effect of Aqueous Extracts of Plant Tissue on Germination of Seeds and Growth of Seedlings

Published online by Cambridge University Press:  12 June 2017

Duane Le Tourneau ,
G. D. Failes  and
H. G. Heggeness
Duane Le Tourneau
Affiliation:
Dept. of Plant Path. and Botany, Inst. of Agri. Univ. of Minn., St. Paul
G. D. Failes
Affiliation:
Dept. of Plant Path. and Botany, Inst. of Agri. Univ. of Minn., St. Paul
H. G. Heggeness
Affiliation:
Dept. of Plant Path. and Botany, Inst. of Agri. Univ. of Minn., St. Paul
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Extract

Extracts of many plants have been shown to contain germination and growth inhibitors (1, 2, 3, 4, 5). In some instances these inhibitors play a role in the distribution of species. Thus dried Encelia leaves contain a material which leaches slowly into the ground and inhibits the growth of species susceptible to it (2). This suggests that certain weeds may be aided in their competition with crop plants by similar inhibitors. Helgeson and Konzak (4), for example, found that aqueous extracts of field bindweed (Convolvulus arvensis) and Canada thistle (Cirsium arvense) inhibited the germination of seeds and growth of seedlings of certain crop species.

Type
Research Article
Information
Weeds , Volume 4 , Issue 4 , October 1956 , pp. 363 - 368
Copyright
Copyright © 1956 Weed Science Society of America 

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References

Literature Cited

1. Bennett, E. L., and Bonner, J. Isolation of plant growth inhibitors from Thamnosa montana . Amer. Jour. Bot. 40:29–33. 1953.CrossRefGoogle Scholar
2. Bonner, J. The role of toxic substances in the interaction of higher plants. Bot. Rev. 16:51–65. 1950.Google Scholar
3. Evanari, M. Germination inhibitors. Bot. Rev. 15:153–194. 1949.Google Scholar
4. Helgeson, E. A., and Konzak, R. Phytotoxic effects of aqueous extracts of field bindweed and of Canada thistle. A preliminary report. Bimon. Bull. N. Dak. Agric. Exp. Sta. 12:71–76. 1950.Google Scholar
5. Konis, E. On germination inhibitors. VI. The inhibitory action of leaf saps on germination and growth. Pal. Jour. Bot. Jerus. Ser. IV. pp. 77–85. 1947.Google Scholar
6. Le Tourneau, D. The phytotoxic effects of aqueous extracts of leafy spurge. Res. Report, North Central Weed Control Conference, p. 181. 1951.Google Scholar