Wyniki wyszukiwania

1

Activity of ATPases during dormancy breaking in Norway maple [Acer platanoides L.] seeds

100%

Krawiarz K., Szczotka Z.

Acta Societatis Botanicorum Poloniae

|

2000

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tom 69

|

nr 2

2

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Breaking of seed dormancy in Iris suaveolens Boiss. et Reuter under in vitro conditions

88%

Hajyzadeh M., Yildirim M. U., Mokhtarzadeh S., Sarihan E. O., Khawar K. M.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2019

|

tom 18

|

nr 4

Iris species have great economic importance for their use in ornamental and pharmaceutical industry. Flora of Turkey reports about 43 local taxons of which 16 are endemic. Iris suaveolens Boiss. et Reuter is an endemic species with high seed dormancy and has high tolerance to cold and drought. This study focused on seed dormancy break of I. suaveolens under in vitro conditions. In the first experiment, the seeds were given stratification treatment on MS medium containing different concentrations of BAP with or without NAA. The 2nd experiment reports effects of alternative combinations of cold (at 4°C, 24 h dark) – warm (16 h light photoperiod) conditions on medium containing different concentrations of plant growth regulators on agar solidified MS medium. Both experiments showed about 8.33% seed germination against 64.5% seed viability as confirmed by tetrazolium test. All germinating seeds were abnormal and very weak. In the third experiment, 10 minutes acid scarified seeds cultured at 24°C in 16 h light photo period on MS medium achieved 60.0% germination. Similar treatment under cold + dark condition was inhibitory and failed to show identical results. This underlines the importance of acid scarification, photoperiod and warm treatments of I. suaveolens seeds to break seed dormancy. All germinated seeds showed normal growth and development under field conditions.

3

Temperature pretreatment effects on Trifolium pratense L. seed dormancy and germination

63%

Bochenek A., Zuk-Golaszewska K., Golaszewski J.

Polish Journal of Natural Sciences

|

2017

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tom 32

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nr 4

The cause of seed dormancy relief may be various external factors, however the most data suggest particular role of temperature, especially it is seasonally changing environmental cue. The impact of temperature on hydrotime model parameters of red clover seeds has not been studied up to date. The aim of the study was to determine the water relations of red clover seeds during germination after different constant or fluctuating temperature pretreatment in a dry and moist seedbed, on the basis of the hydrotime model. The highest germination was obtained as a result of temperatures in a moist seedbed thanks to a shift of the mean base water potential towards negative values. Alternating positive temperatures broke the dormancy of red clover seeds to the greatest extent. The use of the hydrotime model to characterise and predict relief of combinational dormancy may be a very effective approach, especially for cultivars, which contains a small percentage of hard seeds. Red clover seeds do not need extreme temperatures or large amplitudes of temperatures alternation to break dormancy in temperate climates. Our results acknowledged the advisability of sowing red clover in autumn because exposition to winter and early spring conditions allow seeds to reach a high vigour and successfully emerge in spring.

4

NO-induced alleviation of dormancy of apple embryos is related to modification of phytohormonal signaling pathways

63%

Andryka P., Wisniewska A., Gniazdowska A., Krasuska U., Bogatek R.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

|

nr 3

5

Hydrotime model analysis of cornflower achene germination

63%

Bochenek A., Golaszewski J., Kondrat B., Szymczak M., Jagielska T.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 3

6

Nitric oxide trascriptional players during seed dormancy and germination

63%

Albertos P., Mateos I., Fernandez-Arbaizar A., Romero-Puertas M., Lorenzo O.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

|

tom 94

|

nr 2

7

Redox-mediated regulation of wheat seed dormancy revealed through modification-specific proteomics

63%

Bykova N., Hoehn B., Rampitsch C., Hu J., Fan T.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 2

8

NO modifies ABA- and GA-related gene expression in germinating apple (Malus domestica Borkh.) embryos

63%

Andryka P., Wisniewska A., Krasuska U., Gniazdowska A., Bogatek R.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 2

9

Dormancy breaking and seed germination of the annual weeds Thlaspi arvense, Descurainia sophia and Malcolmia africana (Brassicaceae)

63%

Karimmojeni H., Taab A., Rashidi B., Bezrafshan A. H.

Journal of Plant Protection Research

|

2014

|

tom 54

|

nr 2

In Iran, Descurainia sophia, Malcolmia africana, and Thlaspi arvense are abundantly found as importunate weeds in winter cereal. Understanding the timing of seed germination under natural conditions is crucial for learning how to manage these annual weeds. Therefore, this study was conducted to evaluate the effect of soil burial, dry storage, cold stratification, KNO3, GA3, and scarification on the seed dormancy and germination of these three species. Species had significantly different responses to the treatment. In D. sophia, seeds buried at a depth of 10 cm for 60 days (55%), and seeds dry stored at 20°C for 180 days (45%) showed the highest level of germination. In M. africana, the germination percentage reached 95% when seeds buried at a depth of 1 cm were soaked in a GA3 concentration of 150 ppm. T. arvense had the lowest level of germination compared to the other species. The highest percentage of T. arvense germination was obtained in seeds treated with 150 ppm GA3. Potassium nitrate partly increased germinability in seeds of M. africana, which initially were less dormant than those of T. arvense and D. sophia.

10

Plant-derived smoke enhances germination of the invasive common milkweed (Asclepias syriaca L.)

63%

Mojzes A., Kalapos T.

Polish Journal of Ecology

|

2015

|

tom 63

|

nr 2

Common milkweed (Asclepias syriaca L.) has become an invasive weed in Central and Eastern Europe, where human-induced fires have also taken part in forming the landscape. There is growing evidence that plant-derived smoke enhances seed germination, especially for species from fire-prone ecosystems, via the mechanisms of dormancy-breaking, germination stimulation or both. Hence, we hypothesized that smoke promotes seed germination for common milkweed by either or both mechanisms. To test this, germination responses of A. syriaca to the application of aqueous smoke solution (smoke-water) were studied in laboratory. Seeds were either cold stratified ( 7°C, 16 days) in tap water (TW), smoke-water (SW) or were not stratified at all, and then were germinated with SW or with TW (encompassing 5 treatments: 0—TW, 0—SW, TW—TW, TW—SW and SW—TW, where the first abbreviation indicates stratification, the second germination condition). In line with our hypothesis, the low (5%) germination of seeds was enhanced by cold stratification with SW at a greater extent (increasing to 52%) than by cold stratification with TW (25%), indicating that SW contributed to dormancy-breaking of seeds for A. syriaca. In contrast, SW did not stimulate germination when it was applied during the germination phase. To our best knowledge, this is the first study demonstrating smokeenhanced germination for common milkweed, which mechanism may help this species to successfully colonize new habitats after fire. As fire frequency is expected to increase in Europe with recent climate change, these results might contribute to a more efficient control of A. syriaca in areas threatened by its invasion.

11

Effect of environmental conditions on germination and persistence of Taraxacum officinale WEB. ex WIGGERS seeds in a soil bank

63%

Bochenek A., Gielwanowska I., Zuk-Golaszewska K.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2008

|

tom 524

The aim of this study was to explain how temperature, desiccation, light and nitrate affect the seasonal pattern of germination and persistence of dandelion achenes. Directly after collection, Taraxacum officinale Web. ex Wiggers achenes were characterized by non-deep primary dormancy, while dry stored at a low temperature, they showed slight seasonal variations of dormancy level. Both high and low soil temperatures caused dormancy release in dandelion seeds. Dandelion achenes did not form a persistent soil bank. The decline of viable seeds was probably due to long-term sub-zero soil temperatures accompanied by its considerable hydration. Nitrate may be a component of the system of environmental signals which, along with light and desiccation, would enable dandelion seeds to detect even the smallest gaps in dense vegetation. As the dormancy changes are fast, the detection of these gaps by Taraxacum officinale achenes may be especially effective. Such ability of dandelion seeds may explain the remarkable ease with which this species occupies grassland areas densely covered with vegetation.

12

Stratification conditions determining seed dormancy release of European bladder nut [Staphylea pinnata L.]

63%

Tylkowski T.

Acta Societatis Botanicorum Poloniae

|

2007

|

tom 76

|

nr 2

European bladder nut has its northern limit in Poland and is legally protected. Climatic conditions, edible seeds attractive for small animals and seed dormancy to a large extent affect its restocking under natural conditions. The aim of this study was to determine conditions for seed dormancy release. Nuts dried after collection to ca 11% of moisture content (fresh weight basis) may be stored without loss of seed viability for over 1 year in a cold store at the temperature of -3oC. For the purpose of seed dormancy release nuts need to be stratified. Seed dormancy release was found highest after the application of warm-followed-by-cold stratification, first for 4-6 weeks at the temperature of 15oC or at cyclically alternating temperature of 10~20oC (24+24 h/cycle), followed by 16-18 weeks at 3oC. Seeds germinate at 3oC with the same rate as at cyclically alternating temperature of 3~15oC (16+8 h/day). Drying of nuts at room temperature to approx. 11% during the warm stratification phase (after 2 or 4 weeks) and further stratification resulted in a significant increase in seed germinability. In some seed lots scarification of nuts (dried during the warm stratification phase) contributes to a further significant increase of seed germinability.

13

Breaking seed dormancy in black murberry [Morus nigra L.] by cold stratification and exogenous application of gibberellic acid

63%

Koyuncu F.

Acta Biologica Cracoviensia. Series Botanica

|

2005

|

tom 47

|

nr 2

Experiments were done to determine the effects of cold stratification (0, 20, 40, 60, 80 or 100 days), application of gibberelic acid (GA3) (0, 250, 500, 1000 or 2000 mg/l) and the combination (GA3 + stratification) on seed germination of black mulberry. Application of 1000 mg/l GA3 proved more effective than any of the other concentrations of GA3 applied. Seeds stratified for 100 days showed 88% germination. The combined treatment of 250 mg/l GA3 and 100 days of stratification yielded 96% germination of seeds. The relationships between GA3 concentration and seed germination (r = 0.93), and between stratification duration and seed germination (r = 0.91) of black mulberry were linear.

14

Qualitative changes in the proteins of cotyledons during cold and warm stratification of Acer platanoides seeds

63%

Pawlowski T., Szczotka Z.

Acta Societatis Botanicorum Poloniae

|

2001

|

tom 70

|

nr 1

15

Breaking of seed dormancy, germination and seedling emergence of the common hawthorn (Crataegus monogyna Jacq.)

63%

Bujarska-Borkowska B.

Dendrobiology

|

2002

|

tom 47 Supplement

The most advantageous time for collecting fruits of the common hawthorn (Crataegus monogyna Jacq.) falls on October, when they are fully ripe. The stones extracted from the fruits must be dried at room temperature to the moisture content of about 10%. The dormancy of the common hawthorn seeds can be overcome by their stratification in a moist medium in one of the three thermal regimes: - 25°/3°C (16 weeks at 25°C followed by 15-18 weeks at 3°C, i.e. to the time when the first seedlings start to appear) - 20~30°/3°C (16 weeks at 20~30°C (16+8 hrs/day) followed by 15-18 weeks at 3°C, i.e. to the time when first seedlings start to appear) - 20~30°/3°C (16 weeks at 20~30°C (24+24 hrs) followed by 15-18 weeks at 3°C, i.e. to the time when first seedlings start to appear) Having been stratified, the seeds germinate vigorously (in 3-5 weeks) and at a high percentage at temperatures of 3~10°, 3~15°, 3~20° and 3~25°C, (16+8 hrs/day) and the seedlings emerge at 3~20°C (16+8 hrs/day) in 4-6 weeks. Storage for one year at -3°C in the case of the seeds dried after harvest to the moisture content of 10% does not reduce their germination capacity. Stones scarification in concentrated sulphuric acid for 120 minutes followed by stratification at 3°C has an adverse effect on seed emergence at the temperature 3~20°C (16+8 hrs/day). It is recommended that stratified seeds should be sown into the still cool soil at the end of March or the beginning of April, as the increased temperature induces the secondary dormancy in seeds.

16

Abscisic acid and water stress responsive genes in maize

63%

Pages M., Alba M. M., Arenas C., Busk P. K., Culianez-Macia F. A., Figueras M., Jensen A. B., Jessop A. C., Peracchia G., Goday A.

Genetica Polonica

|

1994

|

tom 35B

17

The effects of temperature on the dormancy and germination of Cirsium arvense [L.] Scop. seeds

51%

Bochenek A., Golaszewski J., Piotrowicz-Cieslak A. I., Gorecki R. J.

Acta Societatis Botanicorum Poloniae

|

2009

|

tom 78

|

nr 2

105-114

The ecophysiological regulation of seed dormancy in perennial species and those with a varied life cycle has not been studied in detail yet. That is why an attempt has been made to determine the Cirsium arvense seed water relations during stratification and afterripening at different temperatures and germination at constant or fluctuating temperatures on the basis of the hydrotime model. The obtained results showed that breaking of the primary dormancy of achenes took place only during the first stratification month at moderate temperatures, mainly due to an increase in the average water-stress tolerance in a seed population. The induction of secondary seed dormancy during after-ripening at all temperatures resulted mostly from a substantial loss of the seeds' ability to tolerate water stress. Fluctuating temperatures affected neither seed germination nor the hydrotime model parameters. The analysis of the variations of hydrotime model parameters allows a better understanding of the physiological basis of seed dormancy relief and induction.

18

Molecular cloning and expression analysis of ABA 8'-hydroxylase genes during germination of triticale (X Triticosecale Wittm.) seeds

51%

Fidler J., Zdunek-Zastocka E., Bielawski W.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 3

19

Wplyw temperatury na kielkowanie wybranych odmian pszenzyta jarego

51%

Mos M., Wojtowicz T.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2004

|

nr 231

191-200

20

Zmiennosc stanu spoczynkowego ziarniakow odmian pszenicy ozimej

51%

Binek A.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2000

|

tom 216

|

nr 2

313-318

Ograniczanie wyników

Activity of ATPases during dormancy breaking in Norway maple [Acer platanoides L.] seeds

Breaking of seed dormancy in Iris suaveolens Boiss. et Reuter under in vitro conditions

Temperature pretreatment effects on Trifolium pratense L. seed dormancy and germination

NO-induced alleviation of dormancy of apple embryos is related to modification of phytohormonal signaling pathways

Hydrotime model analysis of cornflower achene germination

Nitric oxide trascriptional players during seed dormancy and germination

Redox-mediated regulation of wheat seed dormancy revealed through modification-specific proteomics

NO modifies ABA- and GA-related gene expression in germinating apple (Malus domestica Borkh.) embryos

Dormancy breaking and seed germination of the annual weeds Thlaspi arvense, Descurainia sophia and Malcolmia africana (Brassicaceae)

Plant-derived smoke enhances germination of the invasive common milkweed (Asclepias syriaca L.)

Effect of environmental conditions on germination and persistence of Taraxacum officinale WEB. ex WIGGERS seeds in a soil bank

Stratification conditions determining seed dormancy release of European bladder nut [Staphylea pinnata L.]

Breaking seed dormancy in black murberry [Morus nigra L.] by cold stratification and exogenous application of gibberellic acid

Qualitative changes in the proteins of cotyledons during cold and warm stratification of Acer platanoides seeds

Breaking of seed dormancy, germination and seedling emergence of the common hawthorn (Crataegus monogyna Jacq.)

Abscisic acid and water stress responsive genes in maize

The effects of temperature on the dormancy and germination of Cirsium arvense [L.] Scop. seeds

Molecular cloning and expression analysis of ABA 8'-hydroxylase genes during germination of triticale (X Triticosecale Wittm.) seeds

Wplyw temperatury na kielkowanie wybranych odmian pszenzyta jarego

Zmiennosc stanu spoczynkowego ziarniakow odmian pszenicy ozimej