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Forests 2015, 6(9), 3109-3122; doi:10.3390/f6093109

Effect of Hydropriming and Biopriming on Seed Germination and Growth of Two Mexican Fir Tree Species in Danger of Extinction

1
Facultad de Ciencias Agrícolas, Universidad Veracruzana, Campus Xalapa, Circuito Universitario Gonzalo Aguirre Beltrán s/n, Xalapa, Veracruz 91090, Mexico
2
Centro de Investigaciones Biológicas del Noroeste, Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita, La Paz, Baja California Sur 23096, Mexico
3
Universidad de Sonora, Campus Santa Ana, Carretera Internacional y Av. 16 de Septiembre s/n, Santa Ana, Sonora 84600, Mexico
*
Author to whom correspondence should be addressed.
Academic Editors: Fei-Hai Yu and Eric J. Jokela
Received: 9 May 2015 / Revised: 8 July 2015 / Accepted: 25 August 2015 / Published: 7 September 2015
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Abstract

Abies spp. in general have been shown to need a period of cold stratification to break dormancy and germinate, but this can be very time consuming. In this study, hydropriming by itself and in combination with biopriming was carried out on Abies hickelii and Abies religiosa seeds. For biopriming, three species of plant growth promoting rhizobacteria ( Pseudomonas fluorescens, P. putida and Bacillus subtilis) were tested. The purpose was to determine if germination and growth could be improved for these two endangered species. Our results demonstrated that treating A. hickelii and A. religiosa with both hydropriming and biopriming with certain strains of Plant Growth-Promoting Rhizobacteria (PGPR) could improve germination rates up to 91% for A. hickelii and up to 68% for A. religiosa. Importantly, these treatments showed no significant negative impact on the growth of A. religiosa and actually improved growth in A. hickelii. The application of both hydropriming and biopriming offer possibly an alternative methodology to improve germination, survival and preservation of these fir tree species of Mexico that are at risk of extinction. View Full-Text
Keywords: germination; seedling growth; rhizobacteria; Abies germination; seedling growth; rhizobacteria; Abies
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zulueta-Rodríguez, R.; Hernández-Montiel, L.G.; Murillo-Amador, B.; Rueda-Puente, E.O.; Capistrán, L.L.; Troyo-Diéguez, E.; Córdoba-Matson, M.V. Effect of Hydropriming and Biopriming on Seed Germination and Growth of Two Mexican Fir Tree Species in Danger of Extinction. Forests 2015, 6, 3109-3122.

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