Liečivé rastliny v meniacich sa environmentálnych podmienkach

Vliv abiotických a biotických stresorů na vlastnosti rostlin 11.5.2005
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Poděkování
Práce vznikla v rámci projektu NAZV č. QF 4167 nazvaného „Studium funkcí rostlinného
pokryvu půdy v meziporostním období jako součásti systému agro-environmentálních
opatření Horizontálního plánu rozvoje venkova“. Mezinárodní spolupráce probíhala v rámci
programu Erasmus-Sokrates.
The induction of secondary dormancy by false flax (Camelina sativa L.) in
water stress conditions
Summary
Key words: Camelina sativa - secondary dormancy - water potential.
The light and soil water content deficiency belong to factors, which influence the induction of
secondary dormancy by false flax (Camelina sativa L.) and other seeds of oilseed plants. The
influence of different values of water potentials (-0.2; -0.5; -1.0; -1.5; -2.0; -2.5 and -3.0
MPa) on induction of secondary dormancy in seeds of three cultivars of false flax (Lindo,
Calena a Ligena). Water stress was simulated with solutions of polyethylene glycol (PEG
6000). The evaluated seeds were from harvest in the year of 2004 in the conditions of
ecological farming. In our trials was found the influence of different values of water potential
on the germination dynamics by false flax. The proportions of dormant seeds were from 0.25
to 24.5 % in the dependence of values of water potential. The number of dormant seeds
differed significantly also among cultivars.
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