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Phenology and Germination of Crownbeard (Verbesina encelioides)

Published online by Cambridge University Press:  12 June 2017

M. L. H. Kaul  and
P. D. Mangal
M. L. H. Kaul
Affiliation:
Bot. Dep. Kurukshetra and Punjabi Univ's., Kurukshetra-132119 and Patiala-147002
P. D. Mangal
Affiliation:
Bot. Dep. Kurukshetra and Punjabi Univ's., Kurukshetra-132119 and Patiala-147002
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Abstract

Crownbeard [Verbesina encelioides (Cav.) Benth. & Hook. f. ex. A. Gray # VEEEN (Compositae)] exhibited rapid seedling, vegetative, and reproductive growth. Seed germination under ideal conditions was high and occurred in varying soils except in gravel. It was significantly suppressed under drought and waterlogged conditions and was maximum at 21% moisture regimes. Larger and heavier seeds which exhibited higher germination were produced by the plants growing in open and sand dune habitats. Seedling emergence was highest from surface-sown seeds and least in those sown at 2.5-cm soil depth, beyond which no emergence occurred. High phenotypic plasticity, ecological variability, phenological diversity, seed germination in varied soils and under diverse moisture regimes, quick seedling growth and subsequent establishment, coupled with versatile breeding system, contribute to the successful growth, propagation, and spread of this species in nature in India.

Keywords

Seed germinationdimorphismhabitat preference
Type
Weed Biology and Ecology
Information
Weed Science , Volume 35 , Issue 4 , July 1987 , pp. 513 - 518
Copyright
Copyright © 1987 by the Weed Science Society of America 

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