Abstract
Seeds are more resistant to stress than adult plants. Therefore, plants often ensure the preservation of their seeds in the soil. In particular, resistant soil seed stocks can not only effectively extend the shelf life of seeds and maintain their germination, but can also extend the germination life of seeds, thereby reducing the risks that seeds face during germination and promoting population renewal and recovery. However, Tamarix ramosissima and Salix purpurea seeds have a short germination period, can germinate quickly in a wide range of temperatures, and have an "opportunistic" germination strategy, so a stable soil cannot create a seed fund. On the other hand, the Tamarix ramosissima plant can produce highly germinating seeds during the reproductive season, both in spring and summer, and seeds obtained from summer flowers in August-September remain more than 80% viable in early winter (November, 2 months after ripening). Studies have shown that temperatures below freezing are optimal for long-term dry storage of seeds of many trees and shrubs, which maintains good seed germination. Next spring, when the air temperature rises and the snow melts, the germination of viable seeds of summer flowers is guaranteed and successfully takes root in early spring. Tamarix ramosissima and Salix purpurea's reproductive strategies associated with continuous flowering and fruiting allow it to create a "live Seed Bank", and its rapid germination tactics ensure seed germination for seedlings under favorable conditions that allow reproductive success.
01 Introduction
The full text of the article is available for download in PDF format on the right panel.
02 References
- 1 Байтулин И.О. Теоретические основы и методические подходы к интродукции растений в регионах с экстремальными климатическими условиями // Известия НАН РК. Серия биологическая и медицинская - 2010. - № 2 (278). – С. 18–25
- 2 Алексейчук Г.Н., Ламан Н.А. Физиологическое качество семян сельскохозяйственных культур и методы его оценки. - Минск: Право и экономика, 2005. - 48 с.
- 3 Острошенко В.Ю. Влияние стимулятора роста «Эпин-Экстра» на энергию прорастания и лабораторную всхожесть семян сосны обыкновенной (Pinus sylvestris L.) // Вестник КрасГАУ, серия биологические науки. – 2017. - № 11. – С. 208-218.
- 4 Rajjou L., Lovigny Y., Job C., Belghazi M., Groot S., Job D. Seed quality and germination // In book In seeds: biology, development and ecology. – Navie, 2007. – P. 324-332. https://doi.org/10.1079/9781845931971.0324
- 5 International rules for seed testing. – Japan: Sapporo, 2019. – 20 p.
- 6 Теленгатор М.А., Уколов B.C., Кузьмин И.И. Обработка и хранение семян. - М.: Колос, 1980. - 272 с.
- 7 Reed B.M. Plant Cryopreservation. A Practical Guide. – New-York: Springer Science, 2008. – 513 p.
- 8. Zhang Q., Zhang X.S. 2012. Impacts of predictor variables and species models on simulating Tamarix ramosissima distribution in Tarim Basin, Northwestern China. Journal of Plant Ecology 5:337–345. doi: 10.1093/jpe/rtr049
- 9. Horton J.L., Clark J.L. 2001. Water table decline alters growth and survival of Salix gooddingii and Tamarix chinensis seedlings. Forest Ecology and Management 140:239–247. doi: 10.1016/s0378-1127(00)00314-5
- 10. El-Keblawy A. 2013. Effects of seed storage on germination of two succulent desert halophytes with little dormancy and transient seed bank. Acta Ecologica Sinica 33:338–343. doi: 10.1007/978-94-007-7411-7_7
- 11. Lauron-Moreau, A., Pitre, F.E., Argus, G.W., Labrecque, M., Brouillet, L. Phylogenetic relationships of American Willows (Salix L., Salicaceae) (Открытый доступ)(2015) PLoS ONE, 10 (4), art. no. e0121965. doi: 10.1371/journal.pone.0121965
- 12. Boucher, L.D., Manchester, S.R., Judd, W.S. An extinct genus of Salicaceae based on twigs with attached flowers, fruits, and foliage from the Eocene Green River Formation of Utah and Colorado, USA (2003) American Journal of Botany, 90 (9), pp. 1389-1399. doi: 10.3732/ajb.90.9.1389