DBPapers
DOI: 10.5593/SGEM2016/B61/S25.066

DIFFERENT SOWING DATES – AN IMPORTANT STRATEGY FOR COEXISTENCE OF GENETICALLY MODIFIED CORN AND CONVENTIONAL CORN

V.Urechean, D. Bonea, M. Soare
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-68-1 / ISSN 1314-2704, June 28 - July 6, 2016, Book6 Vol. 1, 509-516 pp

ABSTRACT

The adventitious presence of GM material in conventional corn crops is due to several factors including the cross-pollination from GM to non-GM crop. An important strategy for reducing the rate of cross-pollination is the reduction in flowering synchronization by sowing at different dates. Therefore, our study has included experiments with narrow plots (14 rows) were the transgenic corn MON 810 was sown in the same time (simultaneous) and before the conventional corn (staggered), with different isolation distances and cardinal points. The cross - pollination rates have been monitored by xenia effect. A delay of flowering of 10-12 days between MON 810 and the conventional corn, combined with the isolation distance over the source pollen donor has reduced the gene flow by 65.7%, as compared with the same time flowering making it possible to coexist even at a distance isolation of 10 m. This demonstrates the possibility of improving corn coexistence through temporal isolation based of different sowing dates.

Keywords: cross-pollination rate, flowering synchronous, MON 810, xenia effect