The role of polystimulin hormone application and stratification temperature to break the dormancy and improve seed germination for Abies nordmanniana (Stev.) Spach

Kirdar, Erol; Ertekin, Murat

doi:10.15258/sst.2008.36.2.04

Cited by 5 publications

(7 citation statements)

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“…Dormancy release of seeds from low altitude populations is more sensitive to temperature increase (from 2°C to 5°C) than that of seeds from high altitudes. These results are consistent with those from a study by Kirdar and Ertekin (2008) in which stratification (at 4°C and 9°C for 23 days) released seed dormancy of four seedlots of A. nordmanniana, however, seeds from the lower altitude (Ortaköy seedlot, 1600 m) showed a greater sensitivity to stratification temperature increase than those from higher altitudes (Meydancık seedlot, 1950 m; Yayla and Veliköy seedlots, 1800 m). Thus, populations from low rather than high altitudes may exhibit inhibition of dormancy release resulting from temperature increases due to global warming.…”

Section: Effect Of Temperature and Soil Moisture Content During Cold supporting

confidence: 90%

“…This result is consistent with that from a study on Carex remota [7] in which seed germination was inhibited as stratification temperature increased from 5 to 15°C. However, seed germination of Abies nordmanniana was significantly increased with an increase of stratification temperature from 4 to 9°C [16].…”

Section: Effect Of Temperature and Soil Moisture Content During Cold mentioning

confidence: 92%

“…For example, dormant seeds of Carex remota germinated to a high percentage after 4 weeks stratification at 5°C, while seed germination was significantly inhibited or even induced secondary dormancy when stratified at 11°C, 13°C or 15°C [7]. In contrast, Kirdar and Ertekin (2008) reported that stratification at 9°C was more effective than at 4°C in breaking seed dormancy of four seedlots of Abies nordmanniana. The duration of cold stratification also has been found to affect seed dormancy release [1,8].…”

Section: Introductionmentioning

confidence: 96%

“…Some studies have determined the response of seed dormancy release to single environmental factors such as temperature [5,7,[16][17][18], winter duration [11,19] and seed/soil moisture content [13][14][15] during cold stratification. The results of these studies suggested that global warming could impact the dynamics of seed dormancy release and thus delay or enhance plant regeneration from seeds [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Seed dormancy release of Halenia elliptica in response to stratification temperature, duration and soil moisture content

et al. 2020

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Background: Although the effect of cold stratification on seed dormancy release has been extensively studied for many species, knowledge of the role of stratifying temperature, soil moisture content and duration of stratification on seed dormancy release at the population level is limited. Here, we aimed to determine the response of seed dormancy release to these factors in six populations of Halenia elliptica. Results: Seed dormancy release was more responsive to low than high temperatures, and no dormancy break occurred at 8°C. Seed germination percentage increased first and then remained unchanged as stratifying soil moisture content increased from 0 to 24%. Seed dormancy release of populations from low altitude was more sensitive to increased stratifying temperature and decreased soil moisture content than those from high altitudes. Conclusions: Temperature and soil moisture changes resulting from global warming could affect seed dormancy release and consequently seedling establishment. Thus, incorporating data on seed dormancy release involving temperature, soil moisture content and stratification duration is beneficial for predicting plant species regeneration, migration and coexistence in a scenario of climate change.

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Section: Effect Of Temperature and Soil Moisture Content During Cold supporting

confidence: 90%

Section: Effect Of Temperature and Soil Moisture Content During Cold mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Seed dormancy release of Halenia elliptica in response to stratification temperature, duration and soil moisture content

et al. 2020

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“…Up to date, several scientific studies (Gültekin et al 2004;Gültekin et al 2005;Gürlevik and Gültekin 2008;Yavuz and Yılmaz 2017) performing warm and cold stratification, treatment with sulfuric acid, gibberellic acid, mechanical treatment, cracking, and different sowing times have been conducted to enhance the seed germination of Syrian juniper. Kirdar and Ertekin (2008) reported that cytokinin-like polystimulin-K and bioactive polystimulin-A6 mostly have positive effects on breaking dormancy and enhancing germination. However, in the earlier studies mentioned above, pretreatments have never been combined together for the seeds from different altitudes.…”

Section: Introductionmentioning

confidence: 99%

The impacts of altitude and seed pretreatments on seedling emergence of Syrian juniper (Juniperus drupacea (Labill.) Ant. et Kotschy)

et al. 2021

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Background Syrian juniper is an economically important species and in danger of extinction. For these reasons, the best seedling production methods of the species should be determined and its plantations should be established. The aim of the study is to examine the impacts of altitude and different pretreatment combinations of cold and warm stratifications, citric acid, shaking seeds in bottles with crushed glass, and different stimulating agents including Baikal EM1, Biohumus, Polystimulin A6 and K hormones (PS-A6 and PS-K) on seed germination of Syrian juniper. To conduct the study, the cones of the Syrian junipers were collected from three different altitudes (1000, 1200, and 1400 m a.s.l.) within the boundaries of Forest Management Directorate of Bozyazı, Mersin in Turkey. The seeds were subjected to three replicates per one treatment (altitude in interaction with pretreatment). There were 100 seeds per replicate. Results Two-way ANOVA revealed significant effects of altitude, pretreatment, and their interaction on seedling emergence of Syrian juniper. Seeds from higher altitudes had higher germination rates in all pretreatments. The highest percent emergence (85%) was recorded in the combination consisting of shaking with crushed glass, both cold and warm stratification, and successive application of stimulators PS-A6 and PS-K. All the treatments with most germinating seeds encompassed shaking in crushed glass or soaking in citric acid, both warm and cold stratifications, and application of stimulating agents. Conclusions The use of seeds from higher altitudes should be considered for seedling production of Syrian juniper due to their higher germination potential. Beyond altitudinal differences, specific pretreatments can rise germination potential more than twofold.

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Effect of cold stratification on the temperature range for germination of Pinus koraiensis

Song

Zhang

et al. 2022

J. For. Res.

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Germination at low spring temperatures may offer a competitive advantage for the growth and survival of plant species inhabiting temperate forest ecosystems. Pinus koraiensis is a dominant species in temperate forests of northeastern China. Its seeds exhibit primary morphophysiological dormancy following dispersal in autumn, limiting natural or artificial regeneration: direct seeding and planting seedlings in spring. The aim of this study was to determine the optimum cold stratification temperature that induces germination to increase towards lower temperatures. Seeds from two populations (Changbaishan and Liangshui) were cold stratified at 0, 5 and 10 °C. Germination to incubation temperatures (10/5, 20/10, 25/15 and 30/20 °C; 14/10 h day/night) were determined after 2 and 4 weeks, and 5.5 and 6.5 months of cold stratification. After 5.5 months, approximately 68–91% of seeds from both populations germinated at incubation temperatures of 25/15 °C and 30/20 °C, regardless of cold stratification temperatures. When the cold stratification temperature was reduced to 0 °C and the period increased to 6.5 months, germination at 10/5 °C significantly improved, reaching 37% and 64% for the Changbaishan and Liangshui populations, respectively. After 6.5 months of cold stratification, there was a significant linear regression between cold stratification temperatures and germination at 10/5 °C. The range in temperatures allowing for germination gradually expanded to include lower temperatures with decreasing cold stratification temperatures from 10 to 5 °C and further to 0 °C.

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The role of polystimulin hormone application and stratification temperature to break the dormancy and improve seed germination for Abies nordmanniana (Stev.) Spach

Cited by 5 publications

References 0 publications

Seed dormancy release of Halenia elliptica in response to stratification temperature, duration and soil moisture content

Seed dormancy release of Halenia elliptica in response to stratification temperature, duration and soil moisture content

The impacts of altitude and seed pretreatments on seedling emergence of Syrian juniper (Juniperus drupacea (Labill.) Ant. et Kotschy)

Effect of cold stratification on the temperature range for germination of Pinus koraiensis

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