Genetics and Forest Seed Handling

Schmidt, Lars

doi:10.1007/978-3-642-54601-3_78

Cited by 20 publications

(26 citation statements)

References 34 publications

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“…In contrast, in E. cyclocarpum HP-25/35 shortened lag time and increased germination rate. Some of the differences obtained with priming treatments were marginal, but if germination rate and lag time were faster and shorter, respectively, such as in S. macrophylla , these advantages turn relevant for the nursery practices (Schmidt, 2000), because even small changes in the germination parameters might shorten permanence of seedlings in the seedbed and greenhouse or shade house.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, restoration practices based on native species are urgently required to face the effects of deforestation and climatic change, but there is limited knowledge about propagation requirements for most of the native species as well as methods to decrease seedling and sapling mortality in the field (Lamb, 2012). The use of locally valuable native species is also limited because of the lack of nurseries interested in their propagation; therefore, a limited number of native species are propagated worldwide, especially in the tropics (Schmidt, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Seed priming (hydration followed by dehydration, sensu Heydecker, Higgins, & Gulliver, 1973) has been successfully implemented to increase seed and seedling performance of agricultural plants and also for some native plants (Benech-Arnold & Sánchez, 2004; Pedrero-López, Rosete-Rodríguez, Sánchez-Coronado, Mendoza-Hernández, & Orozco-Segovia, 2016; A. Sánchez, Orta, & Muñoz, 2001; J. A. Sánchez et al., 2006; Schmidt, 2000). The priming treatments involve two steps: (a) seed hydration in water (hydropriming), osmotic solutions of NaCl (osmopriming), or other solutes; in a solid matrix as vermiculite (matrix priming); or it can occur naturally in the soil (natural priming; Benítez-Rodríguez et al., 2014; Gamboa de Buen et al., 2006; González-Zertuche et al., 2001; Lush, Kaye, & Groves, 1984), and (b) seed dehydration, in which all priming treatments ought to end before radicle protrusion; thus, after hydration, seeds are dehydrated up to their initial water content.…”

Section: Introductionmentioning

confidence: 99%

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Seed Priming Effects on Germination and Seedling Establishment of Useful Tropical Trees for Ecological Restoration

Peraza-Villarreal

Sánchez‐Coronado

Lindig‐Cisneros

et al. 2018

Tropical Conservation Science

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We assessed the effects of seed priming and soil retainers on seed germination and early seedling performance of useful species in a tropical semideciduous forest in Veracruz, México. We determined mass and water and lipid content in the seeds of Albizia saman, Cedrela odorata, Enterolobium cyclocarpum, and Swietenia macrophylla. The seeds were exposed to hydropriming and natural priming (seed burial inside the soil) and germinated at 25 C and 25/35 C. The produced seedlings were grown in a shade house and planted in a plain terrain and a hillside (slope 75%). Seedling growth and survival were evaluated. S. macrophylla and E. cyclocarpum seeds had the lowest and highest water content, respectively. S. macrophylla and C. odorata had oil seeds. A. saman and E. cyclocarpum seeds had physical dormancy. Natural priming improved germination in A. saman, C. odorata, and S. macrophylla while hydropriming and 25/35 C enhanced germination in E. cyclocarpum. In the shade house, natural priming promoted seedling growth in all studied species and in the field survival of A. saman and S. macrophylla. In E. cyclocarpum, this effect was obtained with hydropriming in the plain terrain. In the hillside, hydropriming and natural priming and 25/35 C improved survival of S. macrophylla and E. cyclocarpum, respectively. Seed burial for 8 days improved germination, seedling performance, and survival. To bury seeds inside a pot placed in a shade house induced natural priming in C. odorata. We suggest natural priming for A. saman, C. odorata, and S. macrophylla, and hydropriming for E. cyclocarpum seeds. Germination pretreatments were inexpensive and easy tools potentially applicable in restoration and conservation programs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seed Priming Effects on Germination and Seedling Establishment of Useful Tropical Trees for Ecological Restoration

Peraza-Villarreal

Sánchez‐Coronado

Lindig‐Cisneros

et al. 2018

Tropical Conservation Science

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“…The experiment ceased after five days with no further germination. No pre-treatment of seeds was required for the selected species to break dormancy ( Schmidt, 2000 ; Turnbull & Martensz, 1982 ).…”

Section: Methodsmentioning

confidence: 99%

Germination ofAcacia harpophylla(Brigalow) seeds in relation to soil water potential: implications for rehabilitation of a threatened ecosystem

Arnold

Kailichova

Baumgartl

2014

PeerJ

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Initial soil water conditions play a critical role when seeding is the primary approach to revegetate post-mining areas. In some semi-arid climates, such as the Brigalow Belt Bioregion in eastern Australia, extensive areas are affected by open-cut mining. Together with erratic rainfall patterns and clayey soils, the Brigalow Belt denotes a unique biome which is representative of other water-limited ecosystems worldwide. Apart from other environmental stressors, germination is governed by the water potential of the surrounding soil material. While previous studies have confirmed the high tolerance of Brigalow (Acacia harpophylla) seeds to a broad range of temperature and salinity, the question of how soil water potential triggers seed germination remains. In this study, we used three replicates of 50 seeds of Brigalow to investigate germination in relation to water potential as an environmental stressor. Solutions of Polyethylene Glycol (PEG 6000) were applied to expose seeds to nine osmotic water potentials ranging from soil water saturation (0 MPa) and field capacity (−.01 to −.03 MPa) to the permanent wilting point (−1.5 MPa). We measured germinability (number of germinated seeds relative to total number of seeds per lot) and mean germination time (mean time required for maximum germination of a seed lot) to quantify germination. Based on the empirical data of the germination we estimated the parameters of the hydrotime model which simulates timing and success of seed emergence. Our findings indicate that Brigalow seeds are remarkably tolerant to water stress, with germination being observed at a water potential as low as −1.5 MPa. Likewise, the average base water potential of a seed population (hydrotime model) was very low and ranged between −1.533 and −1.451 MPa. In general, Brigalow seeds germinate opportunistically over a broad range of abiotic conditions related to temperature, salinity, and water availability. Direct seeding and germination of native plants on post-mining land may be an effective and economically viable solution in order to re-establish plant communities. However, due to their capacity to reproduce asexually, alternative rehabilitation approaches such as transplantation of whole soil-root compartments may become attractive for restoration ecologists to achieve safe, stable, and non-polluting ecosystems.

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“…Las especies que tienen mayor porcentaje de supervivencia son P. piscipula, con 99.1% a los dos meses, que disminuye en un 9.1% al término del ensayo y C. brasiliense que se mantiene constante con 92.1% durante todo el experimento. Las especies con menor supervivencia son T. donnell-smithii, que pasa de 96.8 a 44.19% y D. guianense, de 94.2 a 60%, a los dos y seis meses de edad por el grave problema fúngico que provocó la defoliación y la muerte en algunas plantas en el último período de evaluación (Figura 3.7).Los tiempos que involucra la germinación dependen de las características genéticas, fisiológicas y morfológicas de cada semilla, del medio en el que germinan y de sus reservas nutritivas, Soriano et al 2013, Schmidt 2016.Para posteriores estudios debe considerarse que las semillas de C. brasiliense, B. integerrima y T. donnell-smithii son recalcitrantes. Particularmente, C. brasiliense es hidrocora(Nery et al 2007), por lo que su contenido de humedad es alto; el tiempo de germinación es bajo por esta característica y porque se utilizan semillas sin cubierta seminal como en este estudio.…”

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Germinación y crecimiento de especies nativas potenciales para reforestación en el estado de Tabasco, México

Vargas-Simón¹

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Genetics and Forest Seed Handling

Cited by 20 publications

References 34 publications

Seed Priming Effects on Germination and Seedling Establishment of Useful Tropical Trees for Ecological Restoration

Seed Priming Effects on Germination and Seedling Establishment of Useful Tropical Trees for Ecological Restoration

Germination ofAcacia harpophylla(Brigalow) seeds in relation to soil water potential: implications for rehabilitation of a threatened ecosystem

Germinación y crecimiento de especies nativas potenciales para reforestación en el estado de Tabasco, México

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