Comparison of Pollen Abortiveness in Four Weed Species Treated with Mercuric Chloride
Abstract
Pollen grain abortiveness due to mercury exposure was investigated in four species of weeds, namely Cleome rutidosperma Mart., Conmelina diffusa Burm.f., Ludwigia micrantha (L.) Hara, and Stachytarpheta jamicensis (L.) Vahl. All four species tested showed mean pollen grain abortion rates significantly higher than those of their unexposed cohorts. Phollen grain abortion was manifested by reduced size and staining deficiencies. Scheffe’s test for variability indicated that higher mercury concentrations are required to effect changes in pollen grain abortiveness. The weed species tested can possibly be used as bioindicators of mercury pollution. Because of the plant’s ability to absorb mercury, these species can also be considered as possible bioremediators.
Published
2007-07-31
Issue
Section
Articles
Keywords
Pollen abortiveness, Mercury, Bioinidcator, Cleome rutidosperma, Commelina diffusa, Stachytarpheta jamicensis, Ludwigia micrantha
Submission of a manuscript implies: that the work described has not been published before (except in the form of an abstract or as part of a published lecture, review, or thesis); that it is not under consideration for publication elsewhere; that its publication has been approved by all co-authors, if any, as well as by the responsible authorities at the institute where the work has been carried out; that, if and when the manuscript is accepted for publication, the authors agree to the automatic transfer of the copyright to the publisher; that the manuscript will not be published elsewhere in any language without the consent of the copyright holders; that written permission of the copyright holder is obtained by the authors for material used from other copyrighted sources; and that any costs associated with obtaining this permission are the authors’ responsibility.