Effects of lithium
on seed germination and plant growth indices in Solanum lycopersicum
Karri Anitha and Srinivas N.
Res. J. Chem. Environ.; Vol. 29(10); 23-31;
doi: https://doi.org/10.25303/2910rjce023031; (2025)
Abstract
A non-essential trace element referred to as "white gold" is lithium (Li). According
to its concentration, it either promotes or inhibits plant development. The current
study analyses the fresh and dried weights, morphological traits and germination
of Solanum lycopersicum L. (Solanaceae) plant growth characteristics and seed germination
of Li-spiked soil at five different concentrations (10ppm, 25ppm, 50ppm, 75ppm and
100ppm). The experiment yielded the following results for Li at all concentrations:
Germination index (GRI), Mean daily germination (MDG), Mean germination time (MGT),
Final germination percentage (FGP), Germination value (GV) and Stress tolerance
index (STI). The experimental results revealed that all S. lycopersicum germination
parameters were impacted by the higher concentrations of Li in the soil. The root
and shoot length in S. lycopersicum decreased with increasing concentrations of
Li.
Further, it was found that as Li concentrations rose, S. lycopersicum's root and
shoot lengths shrank. Additionally, the stress tolerance index estimation demonstrated
that lower concentrations of Li stimulated plant growth and increased biomass at
higher concentrations.
