Giberelina (GA3) no crescimento e desenvolvimento de plântulas de araçazeiro amarelo (Psidium catteyanum Sabine) oriundas de três estratégias reprodutivas

Abstract

The Myrtaceae family presents several species with market potential, but not yet commercially used, such as the yellow araçá, whose fruit is well accepted in the market, both for its sensorial and functional qualities, that can be used in the pharmaceutical and food industry. The important thing to allow commercial use is the use of seedlings with genetic quality and vigor consistent with the species, which requires studies of the origin of the material according to its reproductive strategy and correct management. The objective of this work was to verify the growth and development of yellow araça (Psidium cattleyanum Sabine) seedlings from seeds obtained by different reproductive strategies and after exogenous application of gibberellin. The work was carried out at the UNEPE – Nursery, located at the Universidade Tecnológica Federal do Paraná - Câmpus Dois Vizinhos, and the material originated from three reproductive strategies (self-pollination, crosspollination and free pollination). Randomized, in factorial 3 x 3 (reproductive strategy x concentration of GA3). Concentrations of GA3 tested were 0, 300 and 600 mg. L- 1), applied after 30 days of transplanting in sacks of seedlings. During this initial phase of yellow araça seedlings the greatest vigor was achieved with material whose seed origin came from open pollination. The concentrations of gibberellin tested did not present significant results regarding the total increment of the individuals.