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Stimulation of Germination of Seeds of Cowpea Witchweed (Striga gesnerioides) by Sodium Hypochlorite and Some Growth Regulators

Published online by Cambridge University Press:  12 June 2017

I. Igbinnosa  and
S.N.C. Okonkwo
I. Igbinnosa
Affiliation:
Plant Physiol., Bot. Dep., Univ. Nigeria, Nsukka
S.N.C. Okonkwo
Affiliation:
Plant Physiol., Bot. Dep., Univ. Nigeria, Nsukka
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Abstract

Tests with 18 growth regulators and chemicals revealed that the cytokinins [zeatin, kinetin, and 6-benzylaminopurine (BAP)], ethylene, and sodium hypochlorite stimulate germination of cowpea witchweed seeds at various concentrations. Witchweed seeds preconditioned in different concentrations of sodium hypochlorite for 3 wk had germination rates of 25 to 89% after incubation in distilled water, 10−5M solution of kinetin, 50 mg L−1 of 2-chloroethylphosphonic acid, and exudates from cowpea roots. Witchweed seeds preconditioned in distilled water and subsequently incubated in distilled water did not germinate.

Keywords

Cowpea witchweed, Striga gesnerioides (Willd.) Vatke # STRGEcowpea, Vigna unguiculata (L.) WalpHemiparasitic plants
Type
Weed Biology and Ecology
Information
Weed Science , Volume 40 , Issue 1 , March 1992 , pp. 25 - 28
Copyright
Copyright © 1992 by the Weed Science Society of America 

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References

Literature Cited

1. Brown, R. and Edwards, W.G.H. 1945. Effects of thiourea and allylthiourea on the germination of seeds of Striga lutea . Nature 155:455.CrossRefGoogle Scholar
2. Cezard, R. 1973. Orobanchacees: III. Germination de graines d'orobanches en presence de differentes substances. Bull. Acad. Lorraines Sci. – Tome XII. No. 2. Pages 121–139.Google Scholar
3. Chancellor, R. J., Parker, C., and Teferedegn, T. 1971. Stimulation of dormant weed seed germination by 2-chloroethyl phosphonic acid. Pestic. Sci. 2:35–37.CrossRefGoogle Scholar
4. Cook, C. E., Whichard, L. P., Turner, B., Wall, M. E., and Egley, G. H. 1966. Germination of witchweed (Striga lutea Lour.): Isolation and properties of a potent stimulant. Science 154:1189–1190.Google Scholar
5. Cook, C. E., Whichard, L. P., Wall, M. E., Egley, G. H., Coggan, P., Luhan, P. A., and McPhail, A. T. 1972. Germination stimulants. II. The structure of strigol – A potent seed germination stimulant for witchweed (Striga lutea Lour.). J. Am. Chem. Soc. 94:6198–6199.CrossRefGoogle Scholar
6. Egley, G. H. and Dale, J. E. 1970. Ethylene, 2-chloroethyl phosphonic acid and witchweed germination. Weed Sci. 18:586–589.CrossRefGoogle Scholar
7. Egley, G. H. 1972. Influence of the seed envelope and growth regulators upon seed dormancy in witchweed (Striga lutea Lour.). Ann. Bot 36:755–770.CrossRefGoogle Scholar
8. Eplee, R. E. 1975. Ethylene: A witchweed seed germination stimulant. Weed Sci. 23:433–436.Google Scholar
9. French, R. C. and Sherman, L. J. 1976. Factors affecting dormancy, germination and seedling development of Aeginetia indica L. (Orobanchaceae). Am. J. Bot. 63:558–570.CrossRefGoogle Scholar
10. Hsiao, A. I., Worsham, A. D., and Moreland, D. E. 1981. Effects of sodium hypochlorite and certain plant growth regulators on germination of witchweed (Striga asiatica) seeds. Weed Sci. 29:98–100.Google Scholar
11. Johnson, A. W., Roseberry, G., and Parker, C. 1976. A novel approach to Striga and Orobanche control using synthetic germination stimulants. Weed Res. 16:223–227.CrossRefGoogle Scholar
12. Musselman, L. J. 1980. The biology of Striga, Orobanche, and other root-parasitic weeds. Annu. Rev. Phytopathol. 18:463–489.Google Scholar
13. Musselman, L. J. and Parker, C. 1981. Studies on indigo witchweed, the American strain of Striga gesnerioides (Scrophulariaceae). Weed Sci. 29:594–596.Google Scholar
14. Norris, R. S. and Eplee, R. E. 1983. Effect of stimulant plus herbicide on Striga germination. Pages 43–46 in: Proceedings of the Second International Workshop on Striga. 5–8 Oct., 1981. IDRC/ICRISAT, Ouagadougou, Upper Volta, Patancheru, A. P., India: ICRISAT.Google Scholar
15. Okonkwo, S.N.C. and Nwoke, F.I.O. 1975. Bleach-induced germination and breakage of dormancy of seeds of Alectra vogelii . Physiol. Plant. 35:175–180.Google Scholar
16. Okonkwo, S.N.C. and Nwoke, F.I.O. 1978. Initiation, development and structure of the primary haustorium in Striga gesnerioides (Scrophulariaceae). Ann. Bot. 42:457–463.Google Scholar
17. Okonkwo, S.N.C. and Okafor, D. N. 1988. Stimulation of germination of seeds of root parasitic weeds by strigol analogues GR-7 and GR-24. Pages 31–35 in Okonkwo, S.N.C., Ayeni, A. O., Ampong-Nyarko, K., and Tchoume, M., eds. Proceedings of the Third Biennial Conference of the West African Weed Science Society, Ibadan, Nigeria. 4–8 Nov., 1985.Google Scholar
18. Parker, C. and Reid, D. C. 1979. Host specificity in Striga species – some preliminary observations. Pages 79–90 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., eds. Proceedings of the Second Symposium on Parasitic Weeds. North Carolina State Univ., Raleigh, NC, U.S.A. Google Scholar
19. Parker, C. 1983. Factors influencing Striga seed germination and hostparasite specificity. Pages 31–35 in Proceedings of the Second International Workshop on Striga. 5–8 Oct., 1981. IDRC/ICRISAT, Ouagadougou, Upper Volta, Patancheru, A. P., India: ICRISAT.Google Scholar
20. Pavlista, A. D., Worsham, A. D., and Moreland, D. E. 1979. Witchweed seed germination. II. Stimulatory and inhibitory effects of strigol and GR-7, and the effects of organic solvents. Pages 228–237 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., eds. Proceedings of the Second Symposium on Parasitic Weeds. North Carolina State Univ., Raleigh, NC, U.S.A. Google Scholar
21. Reid, D. C. and Parker, C. 1979. Germination requirements of Striga species. Pages 202–210 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., eds. Proceedings of the Second Symposium on Parasitic Weeds. North Carolina State Univ., Raleigh, NC, U.S.A. Google Scholar
22. Saghir, A. R. 1979. Strigol analogues and their potential for Orobanche control. Pages 238–244 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., eds. Proceedings of the Second Symposium on Parasitic Weeds. North Carolina State Univ., Raleigh, NC, U.S.A. Google Scholar
23. Stevens, R. A. and Eplee, R. E. 1979. Striga germination stimulants. Pages 211–218 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., eds. Proceedings of the Second Symposium on Parasitic Weeds. North Carolina State Univ., Raleigh, NC, U.S.A. Google Scholar
24. Vasudeva Rao, M. I. 1985. Techniques for screening sorghum for resistance to Striga . Int. Crops Res. Inst. for the Semi-Arid Tropics (ICRISAT). Information Bull. No. 20.Google Scholar
25. Williams, C. N. 1961. Effect of light, gibberellic acid and kinetin on growth and morphogenesis of Striga seedlings. Nature (London) 189:378–381.Google Scholar
26. Worsham, A. D., Moreland, D. E., and Klingman, G. C. 1959. Stimulation of Striga asiatica (witchweed) seed germination by 6-substituted purines. Science 130:1654–1656.Google Scholar
27. Worsham, A. D., Klingman, G. C., and Moreland, D. E. 1962. Promotion of germination of Striga asiatica seed by coumarin derivatives and effects on seedling development. Nature 195:199–201.CrossRefGoogle Scholar
28. Yoshikawa, F., Worsham, A. D., Moreland, D. E., and Eplee, R. E. 1978. Biochemical requirements for seed germination and shoot development of witchweed (Striga asiatica). Weed Sci. 26:119–122.CrossRefGoogle Scholar