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Germination and the Potential Persistence of Weedy and Domestic Okra (Abelmoschus esculentus) Seeds

Published online by Cambridge University Press:  12 June 2017

Grant H. Egley
Affiliation:
South. Weed Sci. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
C. Dennis Elmore
Affiliation:
South. Weed Sci. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776

Abstract

Germination and longevity of weedy and three domestic okra [Abelmoschus esculentus (L.) Moench. # ABMES] cultivars were investigated. Hard seed coats are the major reason for okra seed dormancy. Hard seeds of weedy okra, induced to germinate by scarification of seed coats, produced plants yielding 94 to 99% hard seeds. Of these, 40% remained hard but viable after overwintering in the soil at 5 cm deep. Nonhard seeds of weedy okra produced plants that yielded 95 to 99% hard seeds, but only 20% remained hard after overwintering in the soil at 5 cm deep. The ‘White Velvet’ cultivar of okra produced a few hard seeds, but none survived longer than 3 months in the soil. The other domestic cultivars, ‘Dwarf Green Long Pod’ and ‘Clemson Spineless', produced no hard seeds. None of these seeds survived over winter in the soil. Some seeds of White Velvet became slightly harder during dry storage based on time in concentrated H2SO4 necessary to induce 80% germination. Although the hard-seed trait existed in the population of this domestic cultivar, it is unlikely that the seeds would overwinter. Seeds that overwinter in a dry condition may be the exception. Because a high percentage of hard seeds overwinter and germinate the following spring, weedy okra has the potential to become a persistent problem.

Type
Weed Biology and Ecology
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Baker, H. G. 1965. Characteristics and modes of origin of weeds. Pages 147172 in Baker, H. G. and Stebbins, G. L., eds. The Genetics of Colonizing Species. Academic Press, New York.Google Scholar
2. Christiansen, M. N. and Justus, N. 1963. Prevention of field deterioration of cotton seed by an impermeable coat. Crop Sci. 3:439440.Google Scholar
3. DeWet, J.M.J, and Harlan, J. R. 1975. Weeds and domesticates: Evolution in the man-made habitat. Econ. Bot. 29:99107.CrossRefGoogle Scholar
4. Egley, G. H. and Duke, S. O. 1985. Physiology of weed seed dormancy and germination. Pages 2764 in Duke, S. O., ed. Weed Physiology. Vol. I: Reproduction and Ecophysiology. CRC Press, Inc., Boca Raton, FL.Google Scholar
5. Egley, G. H., Paul, R. N. Jr., Vaughn, K. C., and Duke, S. O. 1983. Role of peroxidase in the development of water-impermeable seed coats in Sida spinosa L. Planta 157:224232.Google Scholar
6. Egley, G. H., Paul, R. N. Jr., Duke, S. O., and Vaughn, K. C. 1985. Peroxidase involvement in lignification in water-impermeable seed coats of weedy leguminous and malvaceous species. Plant Cell Environ. 8:253260.Google Scholar
7. Elmore, C. D. and Dale, J. E. 1982. Response of weedy and commercial okras (Abelmoschus esculentus) to preemergence herbicides. Weed Sci. 30:213215.Google Scholar
8. Lee, J. A. 1975. Inheritance of hard seed in cotton. Crop Sci. 15:149152.Google Scholar
9. Patil, V. N. and Andrews, C. H. 1985. Development and release of hardseeded dormancy in cotton (Gossypium hirsutum). Seed Sci. and Technol. 13:691698.Google Scholar
10. Walhood, V. T. 1956. A method of reducing the hard seed problem in cotton. Agron. J. 48:141142.Google Scholar
11. Werker, E. 1980/81. Seed dormancy as explained by the anatomy of embryo envelopes. Isr. J. Bot. 29:2244.Google Scholar