Features of the use of cultivars of the genus Canna L. in landscape construction of cities in Udmurtia

A striking element in the floral design of green spaces is Canna×generalis. One of the reasons for the low prevalence of this crop is the complexity of preserving planting material and its high cost. To solve the problem of preservation of Canna×generalis rhizomes grown in the Middle Urals, studies were conducted with the storage of large rhizomes (bud diameter from 2.6 cm to 4 cm) and small fractions (bud diameter from 1.0 cm to 2.5 cm) in various ways - open (air-dry) and in sand. The analysis of amylase activity, starch and sugar content at the beginning and end of the rhizome storage period, and the number of sprouted buds at the end of the storage period was performed. Open storage of C.×generalis rhizomes was found to be the optimal storage method, which was evaluated by a total of 24 points. During this storage, there was a high activity of awakening the buds before planting in the ground (more than 50%) and getting a more even seedling. This storage method is suitable for small-flowered tall cultivars of C.×generalis that form large rhizomes. Large-flowered C.×generalis must be stored with a lump of earth, since their rhizomes do not have large reserves of starch and dry up when stored in an air-dry way. Of the 9 cultivars of C.×generalis studied in the collection of the Department of introduction and acclimatization of plants, in the conditions of the Middle Urals, 4 cultivars have proved themselves well: 'Diamond’ ‘' Rosemond Coyles’ ‘ 'Richard Wallens’,' Red king Humbert’ and the old small-flowered and tall sample ' Yunnatsky’, which have an annual abundant and long flowering. As a result of the monitoring of flower design in the cities of Udmurtia, it was found that C.×generalis is more widely used in the city of Sarapul, less often in Izhevsk, and in Glazov and Votkinsk it is not used.

Study on the Effects of Wastewater Duress on Chlorophyll Content of 4 Species Wetland Plants

The research which is the species selection of constructed wetland plants and the resistance of the plants is the key to ecological wastewater treatment technology. This paper studies the change of chlorophyll content in 4 wetland plants (Phragmites communis, Typha orientalis, Arundo donax and Canna generalis) in different wastewater duress time. The results show: chlorophyll contents in Canna generalis and Arundo donax have less change, and their anti-stress capability are stronger.

Study on the Effects of Domestic Sewage on Soluble Protein Content of Parts Constructed Wetland Plants

The study on the resistance of different wetland plants to wastewater duress is the key to ecological wastewater treatment technology. This paper studies the change of soluble protein content in 4 common wetland plants (Phragmites communis, Typha angustata, Arundo donax and Canna generalis) in Shandong in different wastewater duress time. The results show: when the wastewater duress time is 2 days and 4 days, soluble protein content in Phragmites communis has minimal change, and its anti-stress capability is the strongest; when the wastewater duress time is 6 days, soluble protein content in Canna generalis has minimal change, and its anti-stress capability is the strongest, followed by Typha angustata.

Combinational Decolorization of Simulated Malachite Green Polluted Water by Plant and Microbe

This article dealt with the synergistic effect of plant and microbe on malachite green decolorization. Plant (Canna generalis) and microbe (Pseudomonas aeruginosa) were adapted to culture in 20 mg.L-1malachite green solution alone or combined for 7 d or 14 d,after culture the residual concentration of the malachite green solution were determined. The results indicated thatP. aeruginosaused alone was useless to malachite green decolorization, whileC. generalisused alone removed 42.6%-53.2% of malachite green in 7 d-14 d culture, and the combined use ofC.generalisandP.aeruginosaremoved 60.4%-75.5% of malachite green.P.aeruginosaandC.generalishad synergistic effects on malachite decolorization. This research was benifited for the actual use of combinational remediation of malachite green by plant and microbe.

Study on the Effects of Wastewater Duress on MDA in Constructed Wetland Plants

The study on the wetland plant species and their resistance is the key to ecological wastewater treatment technology. The study on the effects of wastewater duress on the physical and chemical properties of constructed wetland plants and the anti-stress capability of constructed wetland plants can provide theoretical basis and technical support for constructed wetland plant material selection. By adopting surface flow constructed wetland system, the effects are studied on MDA in 4 common plants in Shandong (Phragmites communis, Typha oriental, Arundo donax and Canna generalis) in different wastewater duress time. The results show: All in all, Phragmites communis and Canna generalis have stronger anti-stress capability, while Arundo donax and Typha oriental has weaker anti-stress capability; but as wastewater duress time increases, the anti-stress capability of Phragmites communis decreases, while the anti-stress capability of Canna generalis increases.