Fig 3 - uploaded by Ivan Savinov
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Diversity of the structure of the axillary complex in representatives of the Celastrales order. (a) Euonymus and Tripterygium species; (b) Celastrus species; (c) Putterlickia, Moya, Maytenus, and Gymnosporia species; and (d) Wimmeria species. (1) Main axis, (2) covering leaf, (3) barb, (4) axil bud, (5) flower, (6) inflorescence axis extension, (7) bractée (floral bract).
Source publication
Despite the considerable interest of many researchers in the Celastrales order, which is largely due to the great diversity of structural features and almost cosmopolitan distribution (except for some arid regions), no comprehensive biomorphological analysis of its representatives has been undertaken so far. The goal of this work is to analyze the...
Context in source publication
Context 1
... complexes, so typical for many Celastrales representatives, are formed in the vegetative sphere and in the zone of inflorescences (Fig. 3). They are a system of pseudocollateral buds (second-order shoots and some more orders) and are typical for many representatives of the order (Euonymus, Celastrus and Tripterygium, Salacia, Sarawakodendron, Brexia, etc.). One essential feature is the ability of buds to branch (Fig. 4). Serial complexes of Eunymus plants can be ...
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Citations
The adventitious roots of desert shrubs respond to a nabkhas soil environment by adjusting their configuration characteristics, but the mechanism of this response and the main influencing factors are still unclear. To illustrate this response pattern, Nitraria tangutorum Bobrov, Sovetsk. in West Ordos National Nature Reserve was studied, and the shrub was divided into three growth stages: the rudimental stage, developing stage, and stabilizing stage. A combination of total root excavation and root tracing was used to investigate their adventitious root morphology. The results show the following: (1) As the shrub grows, the ability to accumulate sand into nabkhas increases. (2) The soil nutrient accumulation capacity increased with shrub growth. The “fertilizer island effect” was formed in the nutrient developing stage and stabilizing stage of nabkhas soil, but the rudimental stage was not formed. (3) The adventitious root architecture of N. tangutorum at different growth stages was all herringbone with a simple branch structure. With the growth in N. tangutorum, the root diameter of each level gradually increased, the branches of the shrub grew gradually complicated, and the range of resource utilization gradually expanded. (4) Redundancy analysis (RDA) results show that soil organic carbon (SOC) was the main factor affecting the adventitious root architecture. The results of this study reveal the adjustments the adventitious root architecture of N. tangutorum make in order to adapt to the stress environment and provide data support for the protection of natural vegetation in West Ordos.
