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3 resultados encontrados para: AUTOR: Pire, Reinaldo
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1.
Libro
Inga jinicuil Schtdl. Árbol multiuso / Georgina Vargas Simón, Reinaldo Pire
Vargas Simón, Georgina ; Pire, Reinaldo (coaut.) ;
Villahermosa, Tabasco, México : Universidad Juárez Autónoma de Tabasco , 2017
Clasificación: T/333.95 / C65/28
Cerrar
SIBE Campeche
ECO040006867 (Disponible) , ECO040006866 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Chetumal
ECO030008745 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010019431 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020013754 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050006389 (Disponible)
Disponibles para prestamo: 1
PDF

2.
Artículo
Seed germination in Ormosia macrocalyx, an endangered tropical forest tree
Vargas Simón, Georgina (coaut.) ; Martínez Zurimendi, Pablo (coaut.) ; Domínguez Domínguez, Marivel (coaut.) ; Pire, Reinaldo J. (coaut.) ;
Contenido en: Botanical Sciences Vol. 95, no. 2 (April-June 2017), p. 329-341 ISSN: 2007-4476
PDF
Resumen en: Inglés |
Resumen en inglés

Background: Ormosia macrocalyx is a tropical forest tree classified as endangered. Its seeds experience problems of dispersion and apparent physical dormancy due to their hard seed coating. Hypotheses: 1) The stages of dehiscence of the fruits of Ormosia macrocalyx influence the germinative behavior of its seeds. 2) Pregerminative treatments will improve the germination process of the seeds stored under refrigeration. Study species: Ormosia macrocalyx Study site and period: Villahermosa, Tabasco, Mexico from October 2012 to October 2014 Methods: Two completely randomized experiments were conducted in order to analyze the germination process by 1) evaluating germination in seeds from fruit at three stages of dehiscence (closed, semi-open, and open fruit) and 2) applying four treatments, including three pregerminative treatments (water soaking for 24 h, mechanical scarification and scarification+1% gibberellic acid) plus an untreated control, to seeds stored under refrigeration for 17 months.

Results: Differences were found in germination rate (GR), corrected germination rate (CGR) and time to attain 50 % germination (T50) among treatments in the first experiment, with the seeds from open fruits presenting the lowest response (3.31 % day-¹ for GR and CGR, and 15.8 days for T50), although all treatments showed similar times for the initiation of germination (GI) and final germination percentage (GP). In the second experiment, the effect of scarification was greater than both the control and soaking treatments. Scarification treatment values were 68.0 % (GP), 12.0 days (GI), 4.53 % day-¹ (GR), 6.65 (CGR) and 14.5 days (T50). Addition of gibberellic acid did not produce any further advantage over scarification alone. Conclusions: Seeds from open fruits have lower germination rates, although the final GP is not affected. Stored seeds present physical dormancy but lose viability with storage and, when collected after remaining attached to the tree for undefined periods, scarification can greatly improve their germination rate.


3.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Efecto de la longitud radicular al momento del transplante sobre el crecimiento vegetativo de Cuijinicuil (Inga jinicuil Schtdl, and Cham. ex. Ge. Don) en invernadero
Vargas Simón, Georgina ; Pire, Reinaldo (coaut.) ; O De la O, Karina de la (coaut.) ;
Contenido en: Revista Agrociencia Vol. 43, no. 6 (agosto-septiembre 2009), p. 603-608 ISSN: 1405-3195
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
48113-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Español | Inglés |
Resumen en español

Inga jinicuil es una especie potencialmente importante en programas de reforestación en regiones tropicales, por lo cual se evaluaron tratamientos basados en el trasplante de semillas germinadas con diferentes rangos de longitud de radícula y su efecto sobre el crecimiento de la plántula. Se recolectaron frutos con semillas germinadas en Nacajuca, Tabasco, México, y se seleccionaron semillas con longitud de radícula de 1-2 cm (T1), 2-3 cm (T2) y 3-4 cm (T3), las cuales fueron sembradas individualmente en bolsas de vivero.

El diseño experimental fue completamente aleatorio con 10 repeticiones. Durante 30 semanas se determinó la longitud de tallo (LT) y de la raíz principal (LRP), el número de raíces secundarias (NRS) y de folíolos (NF) y la tasa relativa de crecimiento (TRC). LT y NF fue mayor en T2 que en T1 (p<0.01); T2 y T3 fueron superiores al T1 en LRP, NRS y TCR. Se concluye que el tamaño de la raíz, desde 2 cm de longitud al momento del trasplante, incide significativamente en el crecimiento posterior de la plántula.

Resumen en inglés

Inga jinicuil is a potentially important species in reforestation programs in tropical regions. For this reason, germinated seeds with different radicle lengths were planted to determine the effect of radicle length on seedling growth. Fruits with germinated seeds were collected in Nacajuca, Tabasco, México, and seeds with root lengths of 1-2 cm (T1), 2-3 cm (T2) and 3-4 cm (T3) were selected and planted individually in nursery bags.

The experimental design was completely randomized with 10 replications. For 30 weeks, length of stem (LT), length of primary root (LRP), number of secondary roots (NRS), number of leaflets (NF) and relative growth rate (TRC) were evaluated. LT and NF were greater in T2 than in T1 (p<0.01); T2 and T3 were superior to T1 in LRP, NRS, and TCR. It is concluded that root length of 2 cm or more at the time of planting, significantly affects subsequent seedling growth.