Effect of salicylic acid on tomato germination and root growth
DOI:
https://doi.org/10.29312/remexca.v12i4.2642Keywords:
Solanum lycopersicum L., germination, salicylic acidAbstract
Tomato (Solanum lycopersicum L.) is a vegetable belonging to the family of Solanaceae. This crop is important in several countries, mainly for its high economic value reflected in its high demand, with markets for fresh or industrialized consumption. Due to its commercial importance, research is carried out on its cultivation to obtain good quality seedlings. Salicylic acid has been proposed as a plant growth regulator, due to the induced effects on some physiological processes of plants. The objective of this study was to evaluate the effect of different concentrations of salicylic acid on the germination and quality of tomato seedlings. The seed imbibition tests, and salicylic acid preparation were carried out in the laboratory of plant physiology and biotechnology of the Technological Institute of Conkal, Yucatán, during 2016-2017. Tomato seeds of the Rio Grande variety with a determinate growth habit were used. The seeds underwent an imbibition process for 24 h under controlled laboratory conditions. The treatments evaluated were 0, 1, 0.01 and 0.0001 μM of salicylic acid (AS) and as a control one without imbibition. With the results, an analysis of variance was performed, as well as the test of comparison of means by the Tukey method (p≤ 0.05), using the SAS version 9.3 statistical package. The results showed that the time of seed imbibition in concentrations of salicylic acid does not inhibit germination and stimulates the differentiation of secondary roots at concentrations of 1 and 0.01 μM of AS.
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