Stratification and use of gibberellin in seed of Psidium cattleianum

Abstract

Thus, the objective of this work was to evaluate the germination of yellow-bean seed submitted to stratification, with subsequent application of gibberellin. The experiment was carried out in the Vegetable Physiology Laboratory, UTFPR - Câmpus Dois Vizinhos using mature seeds of P. cattleianum cultivar 'Yacy', manually extracted and dried in the shade for 24 hours, separated into lots of 100 units, with Mass measurement of fresh matter and stored in eppendorf® sealed and placed in 5°C BOD for 0, 5, 10, 15, 20, 25, 30, 35, 40, and 45 days. After these periods the seeds were placed in 50 mL beakers containing GA3 (200 mg L-1) or water, according to the treatment, seeded in gerbox® boxes, on wet germitest® paper and kept in B.O.D with the constant temperature of 25 ° C. A completely randomized design, in factorial 2 x 10 (solution of GA3 x stratification period), with four replicates of 100 seeds was used. Daily evaluations were carried out up to 60 days after implantation, verifying percentage of germinated seeds, IVG and TMG. The data were submitted to the normality test of Lilliefords, noting the necessity of the transformation, they were submitted to analysis of variance and Duncan's test. The use of gibberellins combined with or without the use of stratification gave better results for germination, IVG and TMG, showing that the use of this hormone promises better uniformity of germination, so it is recommended to immerse in GA3 solution for Seeds after yellowing.