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Biochemical Requirements for Seed Germination and Shoot Development of Witchweed (Striga asiatica)

Published online by Cambridge University Press:  12 June 2017

F. Yoshikawa ,
A. D. Worsham ,
D. E. Moreland  and
R. E. Eplee
F. Yoshikawa
Affiliation:
Agric Res. Serv., U. S. Dep. of Agric., Dep. Crop Sci., N.C. State Univ., Raleigh
A. D. Worsham
Affiliation:
Agric Res. Serv., U. S. Dep. of Agric., Dep. Crop Sci., N.C. State Univ., Raleigh
D. E. Moreland
Affiliation:
Agric Res. Serv., U. S. Dep. of Agric., Dep. Crop Sci., N.C. State Univ., Raleigh
R. E. Eplee
Affiliation:
APHIS, Plant Protect, and Quarantine Prog., U. S. Dep. of Agric. Witchweed Methods Dev. Lab., Whiteville, NC
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Abstract

Germination of witchweed [Striga asiatica (L.) Kuntze] seeds was induced by treating air-dry seeds with kinetin (6-furfuryl-aminopurine) at 1.16 × 10−4 M and 2.32 × 10−4 M without subjecting the seeds to the conventional preconditioning procedures. Rudimentary shoot development of the seedlings also was promoted. Tissue culture techniques were used also to study growth regulator and nutritional requirements for witchweed seedling development. Seedlings with normal leaves and stems were obtained under aseptic conditions in synthetic media at pH 5.4 in the absence of a host plant when cultured in the presence of kinetin, indole-3-acetic acid (IAA), sucrose, casein hydrolysate and mineral salts. No shoot development occurred in the absence of kinetin or zeatin [6-(trans-4-hydroxy-3-methylbut-2-enylamino)purine]. Shoot development was more advanced if IAA or gibberellic acid (GA3) was used in combination with the cytokinins. Witchweed seedlings are dependent on a host plant not only for their nutrition, but also for plant hormones such as a cytokinin required for the promotion of shoot development.

Type
Research Article
Information
Weed Science , Volume 26 , Issue 2 , March 1978 , pp. 119 - 122
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

1. Cook, C. E., Whichard, L. P., Wall, M. E., Egley, G. H., Coggon, P., Luhan, P. A., and McPhail, A. T. 1972. Germination stimulants. II. The structure of strigol–A potent seed germination stimulant for witch weed (Striga lutea Lour.). J. Am. Chem. Soc. 94:6198–6199.CrossRefGoogle Scholar
2. Egley, G. H. and Dale, J. E. 1970. Ethylene, 2-chloroethylphosphonic acid and witchweed seed germination. Weed Sci. 18:586–589.Google Scholar
3. 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
4. Heather, J. B., Mittal, R. S. D., and Sih, C. F. 1974. The total synthesis of dl-strigol. J. Am. Chem. Soc. 96:1976–1977.Google Scholar
5. Leonard, O. A. 1973. Translocation in and between mistletoes and their hosts and the significance of this in relation to chemical control. Pages 188–193 in Proc. Europ. Weed Res. Council, Symposium on Parasitic Weeds. Malta Univ. Press.Google Scholar
6. Linsmaier, E. M. and Skoog, F. 1965. Organic growth factor requirements of tobacco tissue cultures. Physiol. Plant. 18:100–127.Google Scholar
7. Nash, S. M. and Wilhelm, S. 1960. Stimulation of broomrape seed germination. Phytopathology 50:772–774.Google Scholar
8. Okonkwo, S. N. C. 1966. Studies on Striga senegalensis. III. In vitro culture of seedlings. Establishment of cultures. Am. J. Bot. 53:679–687.Google Scholar
9. Rogers, W. E. and Nelson, R. R. 1962. Penetration and nutrition of Striga asiatica . Phytopathology 52:1064–1070.Google Scholar
10. Shaw, W. C., Sheppard, D. R., Robinson, E. L., and Sand, P. F. 1962. Advances in witchweed control. Weeds 10:182–192.Google Scholar
11. Whitney, P. J. 1973. Transport across the region of fusion between bean (Vicia faba) and broomrape (Orobanche crenata) . Pages 154–166 in Proc. Europ. Weed Res. Council, Symposium on Parasitic Weeds. Malta Univ. Press.Google Scholar
12. Williams, C. N. 1961. Growth and morphogenesis of Striga seedlings. Nature 189:378–381.Google Scholar
13. 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.CrossRefGoogle ScholarPubMed