Abstract
The structure of seasonal dynamics of daily growth of shoots of basket willow (Salix viminalis) is described and analyzed. Object: model inbred-clone population of S. viminalis. Material: developing shoots on annual saplings from cuttings. Methods: comparative morphological, chronobiological, numerical analysis of time series. The formation of dimorphic root systems of one-year saplings from cuttings is described. It is established that the seasonal dynamics of daily increment of shoots is determined by the interaction of linear and nonlinear components. Linear components are approximated by regression equations, and nonlinear components are approximated by harmonic oscillation equations. The rhythmicity of seasonal dynamics of shoot growth is described. Four groups of biorhythms were identified: annual with a period of about 96 days, subannual with a period of 4064 days, and infradian with a period of 1924 days and infradian with a period of 1016 days. The alternation of peaks and dips in the seasonal dynamics of shoot increment is determined by infradian biorhythms with a period of 19...24 days. Infradian biorhythms with different periods are synchronized with each other. The probable reason is the existence of a pulse synchronizer of biorhythms. Interclonal differences in the seasonal dynamics of the daily growth of shoots were not revealed. The probable cause of intraclonal differences is the ontogenetic heterogeneity of vegetative buds, from which annual shoots have developed. To verify this hypothesis, we plan to observe the development of seedlings grown from cuttings harvested from different parts of the uterine shoots. The results obtained are recommended to be taken into account when planning agroforestry measures for crop of S. viminalis.
Highlights
ЭКОЛОГИЯ РАСТЕНИЙ / PLANT ECOLOGY прута для плетения [1; 6; 8]
На рисунке 6 показаны результирующие колебания, полученные для каждого побега путем сложения гармоник с периодом 10–16 сут, а также среднее колебание, полученное для всех побегов (графики клона vi 40 даны синим цветом, клона vi 43 – красным; среднее гармоническое колебание показано маркером ●, средняя фактическая траектория dL(θ)av – маркером ○)
Ангармонические компоненты сезонной динамики отклонений суточного прироста побегов от линейных сезонных трендов с результирующим периодом 20 сут
Summary
ЭКОЛОГИЯ РАСТЕНИЙ / PLANT ECOLOGY прута для плетения [1; 6; 8]. Используется как биофильтр при очистке сточных вод и как фиторемедиатор при восстановлении загрязненных почв [17; 20; 26]. Траектории отклонений суточного прироста от линейных сезонных трендов – dL(θ), см/сут – показаны на рисунке 1 (траектории клона vi 40 даны синим цветом, клона vi 43 – красным; средняя фактическая траектория dL(θ)av показана маркером ○). Графики гармоник с периодом колебаний 64-40 сут показаны на рисунке 2 (графики клона vi 40 даны синим цветом, клона vi 43 – красным; нетипичные графики показаны маркером +; среднее колебание показано маркером ●; средняя фактическая траектория dL(θ)av – маркером ○).
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