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Ray Achene Polymorphism and Germination in Ragweed Parthenium (Parthenium hysterophorus)

Published online by Cambridge University Press:  12 June 2017

Sarbesh K. Dubey  and
Harendra N. Pandey
Sarbesh K. Dubey
Affiliation:
School of Life Sciences, North-Eastern Hill Univ., Shillong, India 793 014
Harendra N. Pandey
Affiliation:
School of Life Sciences, North-Eastern Hill Univ., Shillong, India 793 014
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Abstract

Ragweed parthenium (Parthenium hysterophorus L. #3 PTNHY) growing at six localities between 28°46′N and 13°O'N latitudes in India produced polymorphic ray achenes that varied in size and weight. Frequency of small achenes (1.9 to 2.2 mm) was higher at lower latitude (13°O'N) and that of large achenes (2.5 to 2.8 mm) at higher latitude (28°46′N). Achene weight was positively correlated with its germination percentage. Large-heavy achenes showed better germination than small-light ones.

Keywords

Achene sizeweightpopulationlatitudeParthenium hysterophorus L. PTNHY
Type
Weed Biology and Ecology
Information
Weed Science , Volume 36 , Issue 5 , September 1988 , pp. 566 - 567
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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