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Longevity of Witchweed (Striga asiatica) Seed

  • Faiz F. Bebawi (a1), Robert E. Eplee (a2), Claude E. Harris (a2) and Rebecca S. Norris (a2)

Abstract

Witchweed (Striga asiatica Lour. ♯4 STRLU) seed remained viable for 6 yr under open-shelf laboratory conditions and for 14 yr when deep buried under field conditions. Seed kept in normal atmosphere of the laboratory for < 1 through 6 yr had the following germination percentages: 2, 95, 95, 94, 83, 38, and 7. Newly harvested seed will not germinate because of postmaturity ripening requirements. There were no viable seed after 7 yr of shelf storage in the laboratory. Seed buried in the field gave 60 to 90% germination the first season after production. Annual recovery and testing showed a gradual reduction in viability to 10% at year 14 for the deepest buried seed; shallower buried seed expired sooner. No germination occurred thereafter.

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References

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Keywords

Longevity of Witchweed (Striga asiatica) Seed

  • Faiz F. Bebawi (a1), Robert E. Eplee (a2), Claude E. Harris (a2) and Rebecca S. Norris (a2)

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