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Influence of Capsule Age on Germination of Nondormant Jimsonweed (Datura stramonium) Seed

Published online by Cambridge University Press:  12 June 2017

John A. Pawlak ,
Don S. Murray  and
Brenda S. Smith
John A. Pawlak
Affiliation:
Field Res. Rep., Valent USA, Memphis, TN 38138
Don S. Murray
Affiliation:
Field Res. Rep., Valent USA, Memphis, TN 38138
Brenda S. Smith
Affiliation:
Field Res. Rep., Valent USA, Memphis, TN 38138
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Abstract

Seed capsules of field-grown jimsonweed were harvested 2, 4, 6, and 10 weeks after anthesis. Degree day accumulation from anthesis and weeks after anthesis were equal in predicting the time required for nondormant jimsonweed seed production and seed dry weight. Seed germination increased as capsule age increased from 2 to 6 weeks. No additional increase in germination was observed in seed from capsules collected 10 weeks after anthesis. Maximum seed weight was obtained from capsules 6 and 10 weeks old in 1986 and 1987, respectively. Germination was correlated highly with seed weight.

Keywords

Jimsonweed, Datura stramonium L. var. tatula Torr. ♯3 DATSTDegree daythermal unittemperatureweed biologyDATST

Information

Type
Research
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 31 - 34
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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