Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


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Russian
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Article
UDC: 
635.965.282.6:581.522.4(571.1)

Biological Features of Gladiolus hybridus in Connection with the Adaptation of the Siberian Region

Autors: 
Sedelnikova Lyudmila L., Central Siberian Botanical garden of the Siberian branch of the Russian Academy of Sciences
Vorobyova Irina G., Central Siberian Botanical garden of the Siberian branch of the Russian Academy of Sciences
Abstract: 

The adaptive possibilities of the varietal diversity of Gladiolus hybridus in the forest-steppe zone of Western Siberia are analyzed. Morphobiological features of shoot formation are shown. Long-term (1999–2019) results of seasonal development of plants in generative age state are presented. The specificity of the terms of flowering varies from different groups of the sum of positive temperatures. Flowering in Novosibirsk occurs in early varieties with the sum of positive temperatures >1462° C, medium >1558° C, late >1711° C. It was determined that in the prewinter the cone of growth of the shoot of renewal forms rudimentary vegetative organs, which corresponds to the second stage of organogenesis. Differentiation of the cone of growth of escape to generative organs begins during the period of intensive growth of escape in June. During the period from 60–73 days, the cone of growth of the shoot passes intrarenal development from III to VIII stages of organogenesis. IX–XII stages of organogenesis correspond to the phenological stages from flowering to fruiting. Flowering duration is 10–25 days, seasonal development 118–123 days. There was a decrease in the coefficient of vegetative reproduction in varieties from 2015 to 2018 of 2–12 times. The main ecological niche of the pathogen Fusarium rot of gladiolus (of vosb. Fusarium oxysporum f. gladioli) are underground organs (roots, corms), and also-above-ground organs of plants. Comparison of the degree of resistance of gladiolus to Fusarium showed a different reaction of varieties during the growing season and storage of corms.

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Received: 
30.11.2020