SOUSA, Isabella Cristina Henriques.
Résumé:
Lettuce cultivation is very important for the economy and widely used in human
consumption, in addition to being commonly cultivated in family farming, generating
income for producers, so it is essential to investigate techniques that will benefit
farmers. The general objective was to investigate the germination process of varieties of
Lactuca sativa L., curly lettuce and iceberg lettuce and, specifically, to evaluate the
substrates that enable a germination process favorable to the cultivation of this species
and two varieties. The experiment was conducted in a protected environment in
conventional cultivation, in a greenhouse belonging to the Federal University of
Campina Grande, Education and Health Center, Cuité campus, located on the Olho
d’água da Bica site, rural area of the municipality of Cuité. The 20-day period ran from
August 13, 2024 to September 1, 2024. The work was carried out in a factorial scheme,
it was found that the substrates did not interact with the varieties of Lactuca sativa L.
After the analysis of variance and the comparison of means, it was found that there was
no significant interaction between the substrates and the seeds of the varieties of crisp
and iceberg lettuce. This lack of interaction was enough to prevent considerable
variation in the results of the analyzed variables: germination percentage, germination
speed index and number of definitive leaves. The substrates MecPlant, Carolina Soil
and Ht Hortaliças were those that best provided the best percentage of germination and
germination speed index of the Lactuca sativa L. varieties researched. The American
variety stood out in the investigated variables of germination percentage, IVG and
definitive leaves.
