Evaluation of pregerminative treatments in gulupa seeds (P. edulis f. edulis Sims).

Abstract

<jats:p>Abstract The genus Passiflora, commonly known as fruits of passion, includes numerous species, including gulupa (Passiflora edulis f. edulis), of nutracetic and economic importance, both for consumption in nature and for its agro-industrial applicability. This research was developed to evaluate the effects of various pre-germinative treatments on the germination of gulupa seeds from the municipality of Ramiriquí (Boyacá), such as: exposure to hydrogen peroxide (H2O2), hypochlorite of sodium (NaOCl), gibberellic acid (GA3), distilled water imbibition and stratification at 4 °C, in varying concentrations and exposure times (24 and 48 hours), using an experimental design completely random, with three repetitions of 50 seed each one. Statistical analysis showed significant differences between treatments, with H2O2 being 15% the most effective, with a germination percentage (PG) of 88% in exposed seeds for 48 hours. In the presence of NaOCl the percentages were lower 36 - 40%. GA3 at 100 ppm for 24 hours recorded 51% PG, at the other concentrations of this growth regulator and exposure times this value was lower. The use of H2O2 has not been reported as a treatment to induce germination in the genus Passiflora. These results can be applied for the treatment of seeds in plant species can be a viable, effective, economical and easily applicable alternative.</jats:p>

Posibilidades de reproducción de Schinus johnstonii (Anacardiaceae), una especie nativa del Monte argentino

“…Existen diferentes métodos pre-germinativos ya probados que contribuyen a superar la dormición de las semillas. Estos incluyen la remoción o abrasión física de la cubierta seminal (sin dañar al embrión), la abrasión con algún medio ácido que debilite la testa (Vásquez et al, 2019;Martínez Camargo, Morillo Coronado, Cepeda Mora, Mesa Fernández, 2020) y/o el lavado con agua corriente que remueva las sustancias inhibidoras solubles (Young y Young, 1999). En especies adaptadas a ambientes con incendios recurrentes se ha demostrado que los productos químicos resultantes de la combustión parcial o total de restos vegetales pueden actuar como precursores de la germinación (Keeley, 1987;Ghebrehiwot, Kulkarni, Light, Kirkman, van Staden, 2011).…”

Algoritmo De Determinação De Área Foliar Do Tomate

“…Membro da família Solanaceae o tomate (Solanum lycopersicum) é uma das hortaliças mais produzida no Brasil, tendo finalidades comercias e industriais, o que reflete positivamente na economia do país [1]. A produção de tomate em Goiás é de aproximadamente 82 t ha-1 deixando o estado em 1° no ranking de produção nacional [2].…”