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Flowering Patterns, Seed Production, and Somatic Polymorphism of Three Weed Species

Published online by Cambridge University Press:  12 June 2017

Scott A. Senseman  and
Lawrence R. Oliver
Scott A. Senseman
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville. AR 72703
Lawrence R. Oliver
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville. AR 72703
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Abstract

Field studies determined flowering pattern, seed production, and somatic polymorphism of pitted morningglory, common cocklebur, and sicklepod under interspecific and no interference with soybean. Flowering patterns differed between years but were similar under both interferences. Interspecific interference reduced flower and seed numbers 85 to 99%. Rainfall had little effect on flowering, but photoperiod and temperature responses were evident for all weed species. The production equations for seed number per plant from dry weight were quadratic for pitted morningglory and common cocklebur but linear for sicklepod. All species showed somatic polymorphism; however, differences in seed germination and viability were not consistent between years.

Keywords

Pitted morningglory, Ipomoea lacunosa L. #3 IPOLAcommon cocklebur, Xanthium strumarium L. # XANSTsicklepod, Cassia obtusifolia L. # CASOBsoybean, Glycine max (L.) Merr. ‘Forrest’Interspecific interferenceIPOLAXANSTCASOB
Type
Weed Biology and Ecology
Information
Weed Science , Volume 41 , Issue 3 , September 1993 , pp. 418 - 425
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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