Germinação de sementes de passiflora edulis sims submetidas a diferentes temperaturas

Abstract

This work sought to verify the responses of the SCS437 Catarina variety, developed by Epagri, regarding the ideal germination temperature. Temperature is one of the main factors that interfere both in the development and in the germination of sour passion fruit in the southern region of the country, and it is of great importance to verify the responses of the varieties to these factors. For this, a germination test was carried out with a completely randomized design (DIC), using 5 replications. Each repetition with 100 seeds, with substrates of Germitest paper moistened with distilled water with a volume of 2.5 times the weight of the paper. The seeds were placed in germination chambers and kept at temperatures of 15ºC, 20ºC, 25ºC and 30ºC, totaling the 4 treatments. The trial lasted a total of 28 days, with weekly data collection on the 7th, 14th, 21st and 28th days in order to verify the total amount of germinated seeds and define seed vigor through weekly counts. With the development of the research we obtained the following results: The temperatures of 20, 25 and 30ºC showed satisfactory germinations and strong vigor as well, not differing significantly between them, already with 15ºC it presented 0 germination in all attempts, proving to be a great problem to production of seedlings in times with very low temperatures.