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Physical dormancy in seeds of Dodonaea viscosa (Sapindaceae) from India

Published online by Cambridge University Press:  22 February 2007

S.S. Phartyal ,
J.M. Baskin ,
C.C. Baskin  and
R.C. Thapliyal
S.S. Phartyal*
Affiliation:
Forest Tree Seed Laboratory, Forest Research Institute, DehraDun, -248006, UA, India
J.M. Baskin
Affiliation:
Department of Biology, University of Kentucky, Lexington, Kentucky 40506-0225, USA
C.C. Baskin
Affiliation:
Department of Biology, University of Kentucky, Lexington, Kentucky 40506-0225, USA Department of Agronomy, University of Kentucky, Lexington, Kentucky 40546-0321, USA
R.C. Thapliyal
Affiliation:
Forest Tree Seed Laboratory, Forest Research Institute, DehraDun, -248006, UA, India
*
*Correspondence: Email: shyamphartyal@rediffmail.com;shyamphartyal@yahoo.co.in
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Abstract

In contrast to reports in the literature that seeds of Dodonaea viscosa from China and Pakistan are non-dormant, or nearly so, we found that a high percentage of seeds of this species collected in north-western India have a water-impermeable seed coat at maturity, i.e. physical dormancy. Thus, seeds that were mechanically scarified and boiled (to open a ‘water gap’ in the seed coat) germinated to much higher percentages (84% and 77%, respectively) than did those that were non-scarified (24%). Our results agree with studies of seed dormancy in this species in various other parts of its large geographical range.

Keywords

Dodonaea viscosaimbibition curvesphysical dormancyseed dormancy-breakseed germinationseed moisture content
Type
Short Communication
Information
Seed Science Research , Volume 15 , Issue 1 , March 2005 , pp. 59 - 61
Copyright
Copyright © Cambridge University Press 2005

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