Evaluación del comportamiento germinativo de tres especies vegetales nativas con potencial ornamental del centro-norte santafesino
; Castro, Damian Cesar
; Zabala, Juan Marcelo
; Micheloud, Norma
; Buyatti, Marcela Alejandra Otros responsables
Fecha
04/2021
Editorial
Universidad Nacional del Litoral. Facultad de Ciencias Agrarias
Revista
Fave. Sección Ciencias Veterinarias
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Institución organizadora
ISSN
1666-7719
eISSN
2346-9129
ISBN
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Español
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Resumen
La flora nativa posee un enorme potencial paisajístico que ha sido poco explorado. En el presente trabajo se han estudiado aspectos relacionados con las semillas y comportamiento germinativo de tres especies vegetales nativas del centro - norte santafesino con potencial ornamental priorizadas para su introducción a la producción en viveros en el marco de las acciones del Programa de Documentación, Conservación y Valoración de la Flora Nativa (PRODOCOVA). Las especies en estudio corresponden a “Sangre drago” Croton urucurana Baill., “Horquetero” Tabernaemontana catharinensis A. DC. y “Ojo de muñeca” Paullinia elegans Cambess. Para C. urucurana se halló una temperatura óptima a temperaturas alternantes de 20-30 °C, mientras que para P. elegans y T. catharinensis, temperatura constante a 25 °C determinó el mayor porcentaje de germinación. Se identificaron para todas las especies el momento para el recuento inicial y final del porcentaje de germinación. Adicionalmente se observó que semillas de P. elegans son recalcitrantes. Estos resultados son de gran utilidad para la introducción a cultivo de las especies en estudio.
The native flora has an enormous landscaping potential not fully explored yet. In the present work, aspects related to seeds and germination behavior of three native plant species from central-northern Santa Fe with ornamental potential, prioritized for their introduction to nursery production in the framework of the actions of the Program for Documentation, Conservation and Valuation of Native Flora (PRODOCOVA), have been studied. The studied species were “Sangre drago” Croton urucurana Baill, “Horquetero” Tabernaemontana catharinensis A. DC., and “Ojo de muñeca” Paullinia elegans Cambess. For C. urucurana alternating temperatures of 20-30 °C were found as optimal temperature, while for P. elegans and T. catharinensis, constant temperature at 25 °C determined the highest percentage of germination. Additionally, the initial and fi nal count of the germination percentage were determined for each species. Finally, it was also noted that seeds of P. elegans are recalcitrant. These results provide the basis for the introduction to cultivation of the studied species.
The native flora has an enormous landscaping potential not fully explored yet. In the present work, aspects related to seeds and germination behavior of three native plant species from central-northern Santa Fe with ornamental potential, prioritized for their introduction to nursery production in the framework of the actions of the Program for Documentation, Conservation and Valuation of Native Flora (PRODOCOVA), have been studied. The studied species were “Sangre drago” Croton urucurana Baill, “Horquetero” Tabernaemontana catharinensis A. DC., and “Ojo de muñeca” Paullinia elegans Cambess. For C. urucurana alternating temperatures of 20-30 °C were found as optimal temperature, while for P. elegans and T. catharinensis, constant temperature at 25 °C determined the highest percentage of germination. Additionally, the initial and fi nal count of the germination percentage were determined for each species. Finally, it was also noted that seeds of P. elegans are recalcitrant. These results provide the basis for the introduction to cultivation of the studied species.
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