DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagoðeno pretraživanje po punom tekstu



ŠUMARSKI LIST 9-10/2020 str. 37     <-- 37 -->        PDF

(Webb and Dumbroff 1969; Webb 1974 ). According to analysis of variance (Table 2), it was found out that GA3 treatment had a significant effect on germination in growth chamber (+ 5 0C) but there wasn’t any difference between GA3 doses (Table 3). Smilarly, Pawlowski (2009) reported that breaking of dormancy was stimulated by gibberellic acid in Acer platanoides seeds. GA3 treatments of Acer hyrcanum seeds shortened the cold stratification period and increased germination but did not eliminate the requirement of cold stratification of the seeds (Naseri et al. 2018). In this study, it was found out that GA3 treatment had a significant effect on germination in greenhouse conditions (Table 4), but this effect was a negative. These results indicate very clearly that GA3 treatment of Acer trautvetteri seeds especially stratified before sowing in greenhouse doesn’t have a positive effect on germination. Therefore, GA3 application should not preffered in the greenhouse sowing of Acer trautvetteri seeds. The same result has been determined in Acer cappadocium seeds (Erdogan Genc and Ucler 2020). Similarly, Stejskalová et al. (2015) found out that gibberellic acid did not increase the germination percentage compared to stratified seeds in Acer pseudoplatanus. Furthermore, Webb and Wareing (1972) reported that GA3 treatments had no effect for breaking dormancy in Acer pseudoplatanus seeds. Whereas, Zare (2014) obtained the highest percentage of germination in Acer menspesolanum subsp. turcomanicum after 500 ppm and 250 ppm gibberellic acid treatments with five months moist chilling. Although growth chamber and green house results both indicated that seed collection time did not seem to play a role as statistically on seed germination, there was a significant interaction between seed collection time and stratification in greenhouse conditions (Table 4). The highest germination was obtained in seeds collected at third collection time and sown after 8 eight weeks cold stratification (60,16 %). In addition, when germination percentages were also evaluated in terms of treatments, the highest germination (81 %) in the greenhouse was detected in the seeds collected at collection time 3. Also, there was a positive correlation between seed collection time and germination (r=0.59). As a result, the third collection time (in october) should be preferred as seed collection time in Acer trautvetteri seeds, considering that it may vary according to the climatic conditions of the year and different location on area of natural distribution of this species or population.
ACKNOWLEDGEMENTS
ZAHVALA
We would like to thank Karadeniz Technical University Scientific Research Projects Department (Project No:2005.113. 001.1.) for financial supporting. This study was a part of Hanife ERDOĞAN GENÇ Ph.D thesis.
References
LITERATURA
Ansin, R. and Ozkan, Z.C., 1997: Tohumlu Bitkiler (Spermatophyta), Odunsu Taksonlar, Karadeniz Teknik Üniversitesi, Orman Fakültesi Yayınları, p: 479-480, No:167/19, Trabzon.
Beyhan, N., Marangoz, D. and Demir, T., 1999: The Effect of GA3 and Stratification on Hazelnut Seed Germination and Seedlings Grown with and without Plastic Tube, Ondokuzmayıs Üniversitesi, Ziraat Fakültesi Dergisi, 14, 3, p:54-64, Samsun, Turkey.
Bourgoin, A. and Simpson, J.D., 2004: Soaking, Moist-chilling and Temperature Effects on Germination of Acer pensylvanicum Seeds, Canadian Journal Forest Research, 34,10, p:2181-2185.
Bradbeer, J.W., 1988: Seed Dormancy and Germination, Botany King’s College London, Blackie Press, p:151, Newyork, USA.
Chauhan, K.C. and Arun, K., 1998: Significance of Diameter Classes and Picking Dates on Seed Physical and Germination Traits in Acer oblongum Wall., Van Vigyan, 36, 1, 1-7, Nauni.
Chen, Shepley S.C., and Chang, Judy, L.L., 1972: Does Gibberellic Acid Stimulate Seed Germination via Amylase Synthesis?, Plant Physiol., Vol.49, 441-442 p.
Davis, P.H., 1969: Flora of Turkey and the East Aegean Islands, Vol.II., Edinburg Universty Press, 578p., Edinburgh.
Derkx, M.P.M., 2000: Pretreatment at Controlled Seed Moisture Content as an Effective Means to Break Dormancy in Tree Seeds, In: Viemont, J.D.( Editor), Dormancy in Plants: From Whole Plant Behaviour to Cellular control, CABI Publishing, USA, p:65-69.
Drâghici, C., Abrudan, I.V., 2010: Dormancy Breaking of Acer and Fraxinus Seeds-a Brief Review, Bulletin of Transilvania University of Braºov, Vol.3 (52), p:29-32, Braºov.
Erdogan Genc, H., Ucler, A.O., 2020: Effect of Different Treatments on Seed Dormancy Breaking and Germination in Acer cappadocicum Gleditsch var. cappadocicum, Šumarski List, 3-4, p:159-166
Evans, E. and Blazich, F.A., 1999: Overcoming Seed Dormancy: Trees and Shrubs, Department of Horticulture Science, Horticulture İnformation Leaflets, NC State Unıversty, US (online) https://content.ces.ncsu.edu/overcoming-seed-dormancy-trees-and-shrubs.
Farhadi, M., Tigabu, M., Arian, A.G., Sharifani, M., Daneshvar, A., Oden, O.C., 2013: Pre-sowing treatment for Breaking Dormancy in Acer velutinum Boiss. Seed lots, Journal of Forestry Research, 24(2):273-278, Northeast Forestry University, Harbin, China.
Farmer, R.E. and Cunningham, M., 1981: Seed Dormancy of Red Maple in East Tennesee, Society of American Foresters, For.Sci., 27, 3, 446-448.
Genc, M., 2012: Süs Bitkisi Yetiºtiriciliği, Süleyman Demirel Üniversitesi yayınları, Yayın No:55, s. 325, Isparta.
Gleiser, G., Carmen Picher, M., Veintimilla , P., Martinez, J., Verdü, M., 2004: Seed Dormancy in Relation to Seed Storage Behaviour in Acer, Botanical Journal of the Linnean Society, Volume 145, Issue 2, June 2004, p:203–208.
Gultekin, H., C., 2007: Akçaağaç (L.) Türlerimiz ve Fidan Üretim Teknikleri, Çevre ve Orman Bakanlığı Ağaçlandırma ve Erozyon Kontrolü Genel Müdürlüğü, Fidanlık ve Tohum ݺleri Daire Baºkanlığı Yayını, 24 s. Ankara.
ISTA, 1996: İnternational Rules for Seed Testing, İnternational Seed Testing Association, Seed Science and Technology, Forest Service, US.