Boavida L.C., McCormick S. (2007): Temperature as a determinant factor for increased and reproducible in vitro pollen germination in Arabidopsis thaliana. The Plant Journal, 52: 570–582.
https://doi.org/10.1111/j.1365-313X.2007.03248.x
Brewbaker J.L., Kwack B.H. (1963): The essential role of calcium ion in pollen germination and pollen tube growth. American Journal of Botany, 50: 859–865.
https://doi.org/10.1002/j.1537-2197.1963.tb06564.x
Chen Y.F., Matsubayashi Y., Sakagami Y. (2000): Peptide growth factor phytosulfokine-α contributes to the pollen population effect. Planta, 211: 752.
https://doi.org/10.1007/s004250000370
Danti R., Della Rocca G., Calamassi R., Mori B., Mariotti Lippi M. (2011): Insights into a hydration regulating system in Cupressus pollen grains. Annals of Botany, 108: 299–306.
https://doi.org/10.1093/aob/mcr144
Douaihy B., Vendramin G.G., Boratyński A., Machon N., BouDagher-Kharrat M. (2011): High genetic diversity with moderate differentiation in Juniperusexcelsa from Lebanon and the eastern Mediterranean region. AoB Plants, 2011.doi:10.1093/aobpla/plr003
https://doi.org/10.1093/aobpla/plr003
Dumont-BéBoux N., Weber M., Ma Y., vonAderkas P. (1998): Intergeneric pollen-megagametophyte relationships of conifers in vitro. Theoretical and Applied Genetics, 97: 881–887.
https://doi.org/10.1007/s001220050968
Fernando D.D., Owens J.N., von Aderkas P., Takaso T. (1997):In vitro pollen tube growth and penetration of female gametophyte in Douglas fir (Pseudotsugamenziesii). Sexual Plant Reproduction, 10: 209–216.
https://doi.org/10.1007/s004970050089
Fernando D.D., Owens J.N., von Aderkas P. (1998): In vitro fertilization from co-cultured pollen tubes and female gametophytes of Douglas fir (Pseudotsugamenziesii). Theoritical and Applied Genetics,96: 1057–1063.
https://doi.org/10.1007/s001220050839
Gaaliche B., Majdoub A., Trad M., Mars M. (2013): Assessment of Pollen Viability, Germination, and Tube Growth in Eight Tunisian Caprifig (FicuscaricaL.) Cultivars. ISRN Agronomy, vol. 2013, Article ID 207434.
Garcia D., Zamora R., Hodar J.A., Gomez J.M. (1999): Age structure of Juniperuscommunis L. in the Iberian peninsula: Conservation of remnant populations in Mediterranean mountains. Biological Conservation, 87: 215–220.
https://doi.org/10.1016/S0006-3207(98)00059-7
Garcia D., Zamora R., Gomez J.M., Jordano P., Hodar J.A. (2000): Geographical variation in seed production, predation and abortion in Juniperuscommunis throughout its range in Europe. Journal of Ecology, 88: 436–446.
https://doi.org/10.1046/j.1365-2745.2000.00459.x
Gruwez R., Leroux O., De Frenne P., Tack W., Viane R., Verheyen K. (2013): Critical phases in the seed development of common juniper (Juniperuscommunis). Plant Biology, 15: 210–219.
https://doi.org/10.1111/j.1438-8677.2012.00628.x
Gruwez R., De Frenne P., De Schrijver A., Leroux O., Vangansbeke P., Verheyen K. (2014): Negative effects of temperature and atmospheric depositions on the seed viability of common juniper (Juniperuscommunis). Annals of Botany, 113: 489–500.
https://doi.org/10.1093/aob/mct272
Gruwez R., De Frenne P., Vander Mijnsbrugge K., Vangansbeke P., Verheyen K. (2016): Increased temperatures negatively affect Juniperuscommunis seeds: evidence from transplant experiments along a latitudinal gradient. Plant Biology, 18: 417–422.
https://doi.org/10.1111/plb.12407
ISTA (1999): International Rules for Seed Testing. Seed Science and Technology, 27, Supplement.
Karapatzak E.K., Wagstaffe A., Hadley P., Battey N.H. (2012): High temperature-induced reductions in cropping in Everbearing Strawberries (Fragaria x ananassaDuch.) are associated with Reduced Pollen Performance. Annals of Applied Biology, 161: 255–265.
https://doi.org/10.1111/j.1744-7348.2012.00570.x
Kärkkäinen K., Savolainen O., Koski V. (1999): Why do plants abort so many developing seeds: bad offspring or bad maternal genotypes? Evolutionary Ecology, 13: 305–317.
https://doi.org/10.1023/A:1006746900736
Mead R., Curnow R.N., Hasted A.M. (2003): Statistical methods in Agriculture and experimental Biology, 3rd ed. Chapter 14. Chapman& Hall/CRC.
Meloni M., Perini D., Filigheddu R., Binelli G. (2006): Genetic variation in five Mediterranean populations of Juniperusphoenicea as revealed by Inter-Simple Sequence Repeat (ISSR) markers. Annals of Botany, 97: 299–304.
https://doi.org/10.1093/aob/mcj024
Nepi M., Guarnieri M., Mugnaini S., Cresti L., Pacini E., Piotto B. (2005): A modified FCR test to evaluate pollen viability in Juniperuscommunis L. Grana, 44: 148–151.
https://doi.org/10.1080/00173130510010576
Owens J.N., Molder M. (1977): Sexual reproduction of Abiesamabilis. Canadian Journal of Botany, 55: 2653–2667.
https://doi.org/10.1139/b77-303
Owens J.N., Molder M. (1980): Sexual reproduction of Sitcaspurce (Piceasitchensis). Canadian Journal of Botany, 58: 886–901.
https://doi.org/10.1139/b80-113
Pardi M.L., Viegi L., Renzoni G.C., Franchi G.G., Pacini E. (1996): Effects of acidity on the insoluble polysaccharide content of germinating pollen of Pinus pinea L. and Pinus pinaster Aiton. Grana, 35: 240–247.
https://doi.org/10.1080/00173139609430010
Pasonen, H. L., KäpyläM. (1998): Pollen–pollen interactions in Betula pendula in vitro. New Phytologist, 138: 481–487.
https://doi.org/10.1046/j.1469-8137.1998.00135.x
Pinna M.S., Mattana E., Cańadas E.M., Bacchetta G. (2014): Effects of pre-treatments and temperature on seed viability and germination of Juniperusmacrocarpa Sm. ComptesRendusBiologies, 337: 338–44.
Porch T.G., Jahn M. (2001): Effects of high-temperature stress on microsporogenesis in heat-sensitive and heat-tolerant genotypes of Phaseolus vulgaris. Plant, Cell and Environment, 24: 723–731.
https://doi.org/10.1046/j.1365-3040.2001.00716.x
Shivanna K.R., Rangaswamy N.S. (1992): Pollen Biology. A laboratory manual. Berlin, Heidelberg, Sringer-Verlag: 119.
Southworth D. (1988): Isolation of exines from gymnosperm pollen. American Journal of Botany, 75: 15–21.
https://doi.org/10.1002/j.1537-2197.1988.tb12156.x
Stampoulidis A., Milios E., Kitikidou K. (2013). The regeneration of pure Juniperus excelsa M. Bieb. stands in Prespa National Park in Greece. Sumarski List, 137: 163–172.
Strid A., Tan K. (1997): Flora Hellenica. Nordic Journal of Botany, 18: 334.
Vanden-Broeck A., Gruwez R., Cox K., Adriaenssens S., Michalczyk I.M., Verheyen K. (2011): Genetic structure and seed-mediated dispersal rates of an endangered shrub in a fragmented landscape: a case study for Juniperuscommunis in northwestern Europe. BMC Genetics, 12: 73.
https://doi.org/10.1186/1471-2156-12-73
Verheyen K., Adriaenssens S., Gruwez R., Michalczyk I. M.,Ward L. K.,Rosseel Y., Van den Broeck A., GarcíaD. (2009):Juniperuscommunis: victim of the combined action of climate warming and nitrogen deposition? Plant Biology, 11: 49–59.
https://doi.org/10.1111/j.1438-8677.2009.00214.x
Vrahnakis M., Fotiadis G., Kazoglou Y. (2011): Record, assessment and geographical representation of the rangeland and forest habitat types of the Natura 2000 Sites of Prespa National Park (EthnikosDrymosPrespon - GR1340001, and Mt. Varnous (Ori Varnounta - GR 1340003)) and adjacent areas - Final Report. TEI of Larissa, Society for the Protection of Prespa, 107p. (+ Annexes) (in Greek).
Ward L.K. (2010): Variation in ripening years of seed cones of Juniperuscommunis L. Watsonia, 28: 11–19.
Williams C.G., Auckland L.D., Reynolds M.M., Leach K.A. (2003):Overdominantlethals as part of the conifer embryo lethal system. Heredity, 91: 584–592.
https://doi.org/10.1038/sj.hdy.6800354
Williams C.G. (2009): Conifer reproductive biology. Springer.
WorldClim (2019). Global climate data for ecological modeling and GIS. Available at: https://www.worldclim.org/. Accessed on 22 Sept 2018.
