Effect of harvest date, drying, short-term storage and freezing after chilling on the germination of rowan seeds

Afroze, Farhana; O'Reilly, Conor

doi:10.1080/02827581.2015.1080293

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Therefore, to hinder germination, nonstored seeds were placed at − 1°C for 2 weeks prior to sowing. According to Afroze and O'Reilly (2015), as well as our observations (Fig. 8), freezing can result in higher germination.…”

Section: Malus Sylvestrissupporting

confidence: 87%

Effect of different conditions of storage on seed viability and seedling growth of six European wild fruit woody plants

Wawrzyniak

Michalak

Chmielarz

2020

Annals of Forest Science

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Key message Malus sylvestris(L.) Mill.,Pyrus communis(L.),Sorbus aucuparia(L.),Prunus avium(L.),Prunus padus(L.), andCornus sanguinea(L.) are related, co-occurring species producingorthodoxseeds. However, we observed differences in their response to storage conditions, such as storage at different seed moisture contents (5%, 8%, and 11%) and/or temperatures (− 3 °C, − 18 °C, and − 196 °C). Severe desiccation to ca. 5% of MC negatively affected seeds ofM. sylvestris. Seeds ofP. aviumwere sensitive to storage in LN or at − 18 °C.S. aucupariaseeds are best stored at − 3 °C, whereasC. sanguineaseeds tolerate desiccation and storage in LN. In general, species with deeper physiological dormancy (S. aucuparia,P. padus, andC. sanguinea) tended to be more tolerant to desiccation and low temperatures. For all species, storage conditions did not affect seedling growth. Context Wild fruit woody species face many threats such as genetic loss, population fragmentation, and alien species; thus, their genetic variability should be preserved. Aims To examine the effect of storage conditions on seed viability and the initial growth of seedlings of six European wild fruit species: Malus sylvestris (L.) Mill., Pyrus communis (L.), Sorbus aucuparia (L.), Prunus avium (L.), Prunus padus (L.), and Cornus sanguinea (L.). Methods Seeds were desiccated to three different levels of moisture content (ca. 5, 8, or 11%) and stored at three different temperatures (− 3°, − 18°, or − 196 °C; liquid nitrogen, LN) for up to 3 years. Germination and seedling emergence tests were performed as well as measurement of seedling growth. Results Desiccation of M. sylvestris seeds from 10.7 to 4.9% significantly lowered germination from 91 to 77% and seedling emergence from 88 to 74%. In P. avium, LN storage significantly inhibited seedling emergence, both in the laboratory and the greenhouse, but did not affect total seed germination. In P. communis, P. padus, and C. sanguinea, neither germination nor seedling emergence was affected by seed storage conditions. There were small or no differences in stem height and root collar diameter in the first year of seedling growth of stored seeds. Conclusion Species with deeper physiological dormancy (S. aucuparia, P. padus, C. sanguinea) tended to be more tolerant of various storage conditions. Seeds of P. padus and C. sanguinea can be stored long term at − 18 °C or in LN at 5–8% MC without losing viability. M. sylvestris and P. avium seeds are sensitive to desiccation below 6% MC or low temperature of storage at − 18 °C or − 196 °C, respectively. We observed that storage conditions had significant influence on germination and seedling emergence but had no effect on seedling growth after the first growing season.

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Section: Malus Sylvestrissupporting

confidence: 87%

Effect of different conditions of storage on seed viability and seedling growth of six European wild fruit woody plants

Wawrzyniak

Michalak

Chmielarz

2020

Annals of Forest Science

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“…We observed early germination within the soil of rowan seeds without pulp in each spring, and germination of the rowan seeds with pulp only after the second and third winter, in accordance with Granström (1987). Under natural stratification conditions (varying moisture and temperature conditions), the dormancy of rowan seeds without pulp will be broken after 24-28 weeks (Barclay & Crawford 1984, Afroze & Reilly 2015, which corresponded to our findings. To overcome dormancy, rowan seeds in fruits required longer periods of cold treatment because the pericarp must first decompose before the fruit-induced dormancy could be broken (Devillez 1979, cited in Raspé et al 2000, Barclay & Crawford 1984, Bewley 1997).…”

Section: Seed Persistence In Soilsupporting

confidence: 89%

Is there an effect of storage depth on the persistence of silver birch (Betula pendula Roth) and rowan (Sorbus aucuparia L.) seeds? A seed burial experiment

Tiebel¹,

Huth²,

Wagner³

2021

iForest

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“…All seeds of a cohort may not have germinated readily under the combination of moisture and cool temperature, however, this would leave some viable seeds dormant to germinate at a later warmer temperature. The permeability of the various seed coats may be affected and the water absorption by the seed may be decreased if the temperature is low (Souza and Cardoso 2000;Afroze and O'Reilly 2016). In addition, moisture in the filter paper inside the Petri dishes penetrated the seed coat more readily in non-stratified seed coats (Schopfer and Plachy 1985) than those that were cold stratified which may result in lower levels of germination.…”

Section: Correlations Between Tz Seed Viability Vigour and Seed Massmentioning

confidence: 99%

A comparative study on seed physiology and germination requirements for 15 species of Eucalyptus

Afroze

Douglas

Grogan

2021

Theor. Exp. Plant Physiol.

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Seed physiology of 15 Eucalyptus species of interest for cut foliage plantations was unknown and therefore evaluated. The viability and vigour of seeds and germination potential of 15 Eucalyptus species was determined by using a tetrazolium (TZ) staining test, and the results were compared to a germination test. In a separate experiment, seeds of each lot were subjected to either 0 or 4-week cold stratification at 4 ± 1 °C to investigate their potential stratification requirement. After stratification, seeds were then allowed to germinate at 22 ± 1 °C with 16 h lighting per day for 36 days. Seed viability and vigour were checked by evaluating % root, cotyledon and first true leaves emergence, and the speed of emergence, in the germination test. The germination percentages varied with the species. Seed stratification with the interaction of seed species lots significantly affected both viability and vigour. The seed viability of the different species ranged from 9 to 100% and 2 to 100%, for the TZ test and germination test, respectively, with a high correlation (R2 = 0.89) between the two. Physiology tests revealed that cold stratification of seed was not required for the 15 species to maximise their germination potential and growth in Irish and British climate.

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Effect of harvest date, drying, short-term storage and freezing after chilling on the germination of rowan seeds

Cited by 5 publications

References 18 publications

Effect of different conditions of storage on seed viability and seedling growth of six European wild fruit woody plants

Effect of different conditions of storage on seed viability and seedling growth of six European wild fruit woody plants

Is there an effect of storage depth on the persistence of silver birch (Betula pendula Roth) and rowan (Sorbus aucuparia L.) seeds? A seed burial experiment

A comparative study on seed physiology and germination requirements for 15 species of Eucalyptus

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