Title: Advantages of auxin analogues as plant growth and productivity regulators

Authors: Alfonsas Merkys, Leonida Novickiene, Jurate Darginaviciene, Gemir Maksimov

Addresses: Institute of Botany, Zaliuju ezeru 49, LT 08406 Vilnius, Lithuania. ' Institute of Botany, Zaliuju ezeru 49, LT 08406 Vilnius, Lithuania. ' Institute of Botany, Zaliuju ezeru 49, LT 08406 Vilnius, Lithuania. ' Institute of Botany, Zaliuju ezeru 49, LT 08406 Vilnius, Lithuania

Abstract: The possibility of regulating productivity of potato plants by applying the promising analogues of auxin – compounds TA-12, TA-59, LN-14, LN-16 – has been proved experimentally. The compounds at optimal concentrations (TA-12 1.0, TA-59 0.5, LN-14 and LN-16 1.0 kg/ha) were found to activate the process of tuber formation, increasing the number of tubers and accumulation of assimilates in tubers. TA-12 is characterised by the highest activity: it increased the productivity of potato (~ 6.0 t/ha) as well as sugar-beet root yield (~3.0 t/ha) and sucrose content (~1.1). TA-12 is supposed to affect plant cell through the IAA receptory system.

Keywords: auxin analogues TA-12; TA-59; LN-14; LN-16; IAA; plasmalemma; RNA-polymerase II; plant growth; productivity regulators; potato; sugar beet; tuber formation; root yield; sucrose content.

DOI: 10.1504/IJEP.2007.014231

International Journal of Environment and Pollution, 2007 Vol.29 No.4, pp.443 - 456

Published online: 26 Jun 2007 *

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