Efeito do condicionamento fisiológico de sementes beterraba com ácido salicílico na produção de mudas

Abstract

Conditioning is a technique that can contribute to improving the physiological potential of seeds. The use of growth regulators along with physiological conditioning can favor the physiological processes of the seed, and salicylic acid is an important phytohormone as it regulates several processes in seed germination. The objective of this work was to evaluate the effect of physiological conditioning of beet seeds with different doses of salicylic acid for the production of seedlings. The experiment was carried out in the experimental area of the UFFS campus Chapecó, in an agricultural greenhouse. The cultivar used was Vermelha longa and the conditioning was done with 4 grams of seeds. The doses used for conditioning were: 0 (control, with water only); 0.1; 0.2, and 0.4 mM salicylic acid. The experiment was conducted in a randomized block design, with five replications. The following variables were evaluated: percentage of emerged plants, plant height, number of leaves, root length, and dry mass of shoots and roots of seedlings. The data obtained were submitted for analysis of variance, in addition to the use of the regression test. We can conclude that physiological conditioning together with AS did not cause a significant effect on any of the variables that were evaluated, except for the emergence of plants at 21 after sowing, however, it does not contribute to the improvement of the other parameters evaluated in the production of seedlings, during 28 days after sowing.