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Germination, Growth, and Seed Production of Ipomoea hederacea when Planted at Monthly Intervals

Published online by Cambridge University Press:  12 June 2017

Robert J. Thullen  and
Paul E. Keeley
Robert J. Thullen
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Shafter, CA 93263
Paul E. Keeley
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Shafter, CA 93263
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Abstract

In 1979 and 1980, ivyleaf morningglory [Ipomoea hederacea (L.) Jacq. # IPOHE] seed were planted in field plots at monthly intervals beginning with March and continuing through October. During the first 9 weeks, seedlings from the July plantings grew more rapidly than those from the other monthly plantings and produced the heaviest fresh weights. Vegetative growth slowed after the 9-week harvest and seedlings from June plantings had heavier fresh weights at the 12-week harvest. Plants from the July planting produced the greatest number of seed at both the 9- and 12-week harvests. After scarifying, seed produced by plants from April through August (12-week harvest) germinated best with the 27/32 C night/day air temperature regime, but also germinated at 15/21, 21/27, and 27/32 C regimes. Ivyleaf morningglory seed did not germinate at an air temperature regime of 10/15 C. With an air temperature regime of 32/38 C the germination of some lots began to decrease.

Keywords

FlowerscapsulesIPOHE
Type
Research Article
Information
Weed Science , Volume 31 , Issue 6 , November 1983 , pp. 837 - 840
Copyright
Copyright © 1983 Weed Science Society of America 

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References

Literature Cited

1. Cole, A. W. and Coats, G. E. 1973. Tall morningglory germination response to herbicides and temperature. Weed Sci. 21:443–446.CrossRefGoogle Scholar
2. Crowley, R. H. and Buchanan, G. A. 1982. Variations in seed production and the response to pests of morningglory (Ipomoea) species and small-flower morningglory (Jacquemontia tammifolia). Weed Sci. 30:187–190.CrossRefGoogle Scholar
3. Taylor, B. B. and Heathman, E. S. 1977. Weeds in western cotton. Proc. Beltwide Cotton Prod. Res. Conf. p. 161.Google Scholar
4. Thullen, R. J. and Keeley, P. E. 1982. The effects of some environmental conditions on the germination of black nightshade and ivyleaf morningglory. Proc. West. Soc. Weed Sci. 35:76–82.Google Scholar