Back Thomas G., Pharis Richard P. (2003): Structure?Activity Studies of Brassinosteroids and the Search for Novel Analogues and Mimetics with Improved Bioactivity. Journal of Plant Growth Regulation, 22, 350-361  https://doi.org/10.1007/s00344-003-0057-0 Bajguz A. (2011): Brassinosteroids – occurrence and chemical structures in plants. In: Hayat S., Ahmad A. (eds): Brassi-nosteroids: A Class of Plant Hormone. Dordrecht, Heidelberg, London, New York, Springer Science + Business Media B.V.: 1–28.Bajguz Andrzej, Hayat Shamsul (2009): Effects of brassinosteroids on the plant responses to environmental stresses. Plant Physiology and Biochemistry, 47, 1-8  https://doi.org/10.1016/j.plaphy.2008.10.002Basler David, Körner Christian (2012): Photoperiod sensitivity of bud burst in 14 temperate forest tree species. Agricultural and Forest Meteorology, 165, 73-81  https://doi.org/10.1016/j.agrformet.2012.06.001Caffarra Amelia, Donnelly Alison (2011): The ecological significance of phenology in four different tree species: effects of light and temperature on bud burst. International Journal of Biometeorology, 55, 711-721  https://doi.org/10.1007/s00484-010-0386-1Charrier G., Cochard H., Ameglio T. (): Evaluation of the impact of frost resistances on potential altitudinal limit of trees. Tree Physiology, 33, 891-902  https://doi.org/10.1093/treephys/tpt062Christersson Lars, Fircks Heinrich A. von (1988): Injuries to conifer seedlings caused by simulated summer frost and winter desiccation. Silva Fennica, 22, 195-201  https://doi.org/10.14214/sf.a15509Dittmar Christoph, Elling Wolfram (2006): Phenological phases of common beech (Fagus sylvatica L.) and their dependence on region and altitude in Southern Germany. European Journal of Forest Research, 125, 181-188  https://doi.org/10.1007/s10342-005-0099-xDittmar Christoph, Fricke Wolfgang, Elling Wolfram (2006): Impact of late frost events on radial growth of common beech (Fagus sylvatica L.) in Southern Germany. European Journal of Forest Research, 125, 249-259  https://doi.org/10.1007/s10342-005-0098-y Forest Management Institute (2003): Přehled lesních typů a souborů lesních typů v ČR (typologická tabulka). Available at http://www.uhul.cz/images/typologie/tab_LT_web_F.pdf (accessed Sept 20, 2016).Fujii Seiichi, Saka Hitoshi (2001): The Promotive Effect of Brassinolide on Lamina Joint-Cell Elongation, Germination and Seedling Growth under Low-Temperature Stress in Rice (Oryza sativa L.).. Plant Production Science, 4, 210-214  https://doi.org/10.1626/pps.4.210Gallo Kevin, Hale Robert, Tarpley Dan, Yu Yunyue (2011): Evaluation of the Relationship between Air and Land Surface Temperature under Clear- and Cloudy-Sky Conditions. Journal of Applied Meteorology and Climatology, 50, 767-775  https://doi.org/10.1175/2010JAMC2460.1 Geiger R. (1950): The Climate Near the Ground. Cambridge, Harvard University Printing Office: 482.Gomes Mara de Menezes Assis, Campostrini Eliemar, Leal Nilton Rocha, Viana Alexandre Pio, Ferraz Tiago Massi, Siqueira Luciane do Nascimento, Rosa Raul Castro Carriello, Netto Alena Torres, Nuñez-Vázquez Miriam, Zullo Marco António Teixeira (2006): Brassinosteroid analogue effects on the yield of yellow passion fruit plants (Passiflora edulis f. flavicarpa). Scientia Horticulturae, 110, 235-240  https://doi.org/10.1016/j.scienta.2006.06.030Gömöry Dušan, Paule Ladislav (2011): Trade-off between height growth and spring flushing in common beech (Fagus sylvatica L.). Annals of Forest Science, 68, 975-984  https://doi.org/10.1007/s13595-011-0103-1Grove Michael D., Spencer Gayland F., Rohwedder William K., Mandava Nagabhushanam, Worley Joseph F., Warthen J. David, Steffens George L., Flippen-Anderson Judith L., Cook J. Carter (1979): Brassinolide, a plant growth-promoting steroid isolated from Brassica napus pollen. Nature, 281, 216-217  https://doi.org/10.1038/281216a0 He R.Y., Wang G.J., Wang X.S. (1991): Effects of brassinolide on growth and chilling resistance of maize seedlings. In: Cutler H.G., Yokota T., Adam G. (eds): Brassinosteroids: Chemistry, Bioactivity and Applications. Washington, D.C., American Chemical Society: 26–35.Hofmann Maria, Durka Walter, Liesebach Mirko, Bruelheide Helge (2015): Intraspecific variability in frost hardiness of Fagus sylvatica L.. European Journal of Forest Research, 134, 433-441  https://doi.org/10.1007/s10342-015-0862-6 Holubík O., Podrázský V., Vopravil J., Khel T., Remeš J. (2014): Effect of agricultural lands afforestation and tree species composition on the soil reaction, total organic carbon and nitrogen content in the uppermost mineral soil profile. Soil and Water Research, 9: 192–200. Hradecká D., Urban J., Kohout L., Pulkrábek J., Hnilička R. (2009): Využití brassinosteroidů k regulaci stresu během růstu a tvorby výnosu řepy cukrové. Listy cukrovarnické a řepařské, 125: 271–273. Khripach V.A., Zhabinskii V.N., Groot, A.E. (1999): Brassinosteroids: A New Class of Plant Hormones. San Diego, Academic Press: 456. Kohout L., Kasal A., Chodounská H. (2004): Použití 2α,3α,17β-trihydroxy-5α-androstan-6-onu pro ovlivňování stresu rostlin. [Utilisation of 2α,3α,17β-trihydroxy-5α-androstan-6-one for influencing of plant stress.] PV 2001-2436 (2.7.2001) – CZ pat. No. 294 343 (4.10.2004). Kohout L., Kasal A., Chodounská H., Slavíková B., Hniličková J. (2002): The use of 2α,3α,17β-trihydroxy-5α-androstan-6-one for plant development regulation. PCT pat. appl. No. PCT/CZ02/00041 (2.7.2002) (WO2003003834) and EU patent 1 401 278 (16.1.2003).Kreyling J., Thiel D., Nagy L., Jentsch A., Huber G., Konnert M., Beierkuhnlein C. (2012): Late frost sensitivity of juvenile Fagus sylvatica L. differs between southern Germany and Bulgaria and depends on preceding air temperature. European Journal of Forest Research, 131, 717-725  https://doi.org/10.1007/s10342-011-0544-yKrishna Priti (2003): Brassinosteroid-Mediated Stress Responses. Journal of Plant Growth Regulation, 22, 289-297  https://doi.org/10.1007/s00344-003-0058-z Kuneš I., Baláš M., Millerová K., Balcar V. (2011): Vnášení listnaté příměsi a jedle do jehličnatých porostů Jizerských hor. Lesnický průvodce 9/2011. Jíloviště-Strnady, VÚLHM: 36.Kuneš Ivan, Baláš Martin, Zahradník Daniel, Nováková Olga, Gallo Josef, Nárovcová Jarmila, Drury Miles Louis (2014): Role of planting stock size and fertilizing in initial growth performance of rowan (Sorbus aucuparia L.) reforestation in a mountain frost hollow. Forest Systems, 23, 273-  https://doi.org/10.5424/fs/2014232-04869Langvall Ola, Nilsson Urban, Örlander Göran (2001): Frost damage to planted Norway spruce seedlings — influence of site preparation and seedling type. Forest Ecology and Management, 141, 223-235  https://doi.org/10.1016/S0378-1127(00)00331-5Lechowicz Martin J. (1984): Why Do Temperate Deciduous Trees Leaf Out at Different Times? Adaptation and Ecology of Forest Communities. The American Naturalist, 124, 821-  https://doi.org/10.1086/284319Lenz Armando, Hoch Günter, Körner Christian, Vitasse Yann, Russo Sabrina (2016): Convergence of leaf-out towards minimum risk of freezing damage in temperate trees. Functional Ecology, 30, 1480-1490  https://doi.org/10.1111/1365-2435.12623Leslie AD, Mencuccini M, Perks M (2014): Frost damage to eucalypts in a short-rotation forestry trial in Cumbria (England). iForest - Biogeosciences and Forestry, 7, 156-161  https://doi.org/10.3832/ifor1161-007Li Boqiang, Zhang Changfeng, Cao Baohua, Qin Guozheng, Wang Weihao, Tian Shiping (2012): Brassinolide enhances cold stress tolerance of fruit by regulating plasma membrane proteins and lipids. Amino Acids, 43, 2469-2480  https://doi.org/10.1007/s00726-012-1327-6Li Kai-rong, Zhang Wei-bing, Li Hui-ke (2005): Effect of natural brassinolide on germination of Ailanthus altissima seeds. Forestry Studies in China, 7, 12-14  https://doi.org/10.1007/s11632-005-0014-zLi K. R., Wang H. H., Han G., Wang Q. J., Fan J. (2008): Effects of brassinolide on the survival, growth and drought resistance of Robinia pseudoacacia seedlings under water-stress. New Forests, 35, 255-266  https://doi.org/10.1007/s11056-007-9075-2Lindkvist L., Lindqvist S. (1997): Spatial and temporal variability of nocturnal summer frost in elevated complex terrain. Agricultural and Forest Meteorology, 87, 139-153  https://doi.org/10.1016/S0168-1923(97)00021-XMenzel Annette, Helm Raimund, Zang Christian (2015): Patterns of late spring frost leaf damage and recovery in a European beech (Fagus sylvatica L.) stand in south-eastern Germany based on repeated digital photographs. Frontiers in Plant Science, 6, -  https://doi.org/10.3389/fpls.2015.00110 Ministry of Agriculture of the Czech Republic (2015): Zelená zpráva o stavu lesa a lesního hospodářství České republiky v roce 2014. Prague, Ministry of Agriculture of the Czech Republic: 108. Nováková O., Kuneš I., Gallo J., Baláš M. (2014): Effects of brassinosteroids on prosperity of Scots pine seedlings. Journal of Forest Science, 60: 388–393. Nováková O., Gallo J., Baláš M., Špulák O., Kuneš I. (2015): Vliv brassinosteroidů na výškový přírůst, fluorescenci chlorofylu a mortalitu sazenic smrku ztepilého a borovice lesní v podmínkách lesní školky. Zprávy lesnického výzkumu, 60: 122–129. Novotný P., Frýdl J., Čáp J. (2015): Zhodnocení kvalitativních parametrů buku lesního (Fagus sylvatica L.) na sedmi pro-venienčních výzkumných plochách ve věku 25 let. Zprávy lesnického výzkumu, 60: 14–23.Oke T. R. (1970): The temperature profile near the ground on calm clear nights. Quarterly Journal of the Royal Meteorological Society, 96, 14-23  https://doi.org/10.1002/qj.49709640703 Petritan I.C., von Lüpke B., Petritan A.M. (2011): Influence of shelterwood and ground vegetation on late spring frost damages of planted beech (Fagus sylvatica) and Douglas-fir (Preudotsuga menziesii) saplings. Baltic Forestry, 17: 227–234. Podrázský V., Remeš J. (2007): Humus form status in close-to-nature forest parts comparing to afforested agricultural lands. Lesnícky časopis – Forestry Journal, 53: 99–106. Podrázský V., Remeš J. (2008): Rychlost obnovy charakteru lesních půd na zalesněných lokalitách Orlických hor. Zprávy lesnického výzkumu, 53: 89–93. Podrázský V., Zahradník D., Remeš J. (2014): Potential consequences of tree species and age structure changes of forests in the Czech Republic – review of forest inventory data. Wood Research, 59: 483–490.Pullman G. S., Zhang Y., Phan B. H. (2003): Brassinolide improves embryogenic tissue initiation in conifers and rice. Plant Cell Reports, 22, 96-104  https://doi.org/10.1007/s00299-003-0674-x Rao R.S., Vidya Vardhini B., Sujatha E., Anuradha S. (2002): Brassinosteroids – a new class of phytohormones. Current Science, 82: 1239–1245.Robson T. Matthew, Rasztovits Erwin, Aphalo Pedro J., Alia Ricardo, Aranda Ismael (2013): Flushing phenology and fitness of European beech (Fagus sylvatica L.) provenances from a trial in La Rioja, Spain, segregate according to their climate of origin. Agricultural and Forest Meteorology, 180, 76-85  https://doi.org/10.1016/j.agrformet.2013.05.008Sasse Jenneth M. (2003): Physiological Actions of Brassinosteroids: An Update. Journal of Plant Growth Regulation, 22, 276-288  https://doi.org/10.1007/s00344-003-0062-3Schütz Jean-Philippe, Götz Michael, Schmid Willi, Mandallaz Daniel (2006): Vulnerability of spruce (Picea abies) and beech (Fagus sylvatica) forest stands to storms and consequences for silviculture. European Journal of Forest Research, 125, 291-302  https://doi.org/10.1007/s10342-006-0111-0Singh Ishwar, Kumar Upendra, Singh S. K., Gupta Charu, Singh Madhulika, Kushwaha S. R. (2012): Physiological and biochemical effect of 24-epibrassinoslide on cold tolerance in maize seedlings. Physiology and Molecular Biology of Plants, 18, 229-236  https://doi.org/10.1007/s12298-012-0122-xŠpulák O, Balcar V (2013): Temperatures at the margins of a young spruce stand in relation to aboveground height. iForest - Biogeosciences and Forestry, 6, 302-309  https://doi.org/10.3832/ifor0815-006 Steyrer G. (2011): Abiotische Schäden im Winter und Frühjahr. Forstschutz Aktuell, 53: 30–31. Strasser L. (2011): Schwarzes Laub und braune Nadeln – Spätfrost in Bayern. Forstschutz Aktuell, 53: 28–29.Thussagunpanit Jutiporn, Jutamanee Kanapol, Kaveeta Lily, Chai-arree Witith, Pankean Porn, Homvisasevongsa Sureeporn, Suksamrarn Apichart (2015): Comparative Effects of Brassinosteroid and Brassinosteroid Mimic on Improving Photosynthesis, Lipid Peroxidation, and Rice Seed Set under Heat Stress. Journal of Plant Growth Regulation, 34, 320-331  https://doi.org/10.1007/s00344-014-9467-4 Vardhini V., Rao R.S. (2003): Amelioration of osmotic stress by brassinosteroids on seed germination and seedling growth of three varieties of sorghum. Plant Growth Regulation, 41: 25–33. https://doi.org/10.1023/A:1027303518467Vitasse Yann, Basler David (2013): What role for photoperiod in the bud burst phenology of European beech. European Journal of Forest Research, 132, 1-8  https://doi.org/10.1007/s10342-012-0661-2Wilen Ronald W., Sacco Melanie, Gusta Lawrence V., Krishna Priti (1995): Effects of 24-epibrassinolide on freezing and thermotolerance of bromegrass (Bromus inermis) cell cultures. Physiologia Plantarum, 95, 195-202  https://doi.org/10.1111/j.1399-3054.1995.tb00827.x