Assessment of the source material of Clarkia Pursh by breeding valuable economic and biological characteristics in the conditions of the south Western Siberia
Year: 2025
Type: article
Abstract: An assessment of the economic and biological value of Clarkia Pursh varieties of ornamental annual herbaceous plants is presented based on a set of characteristics important for different areas of breeding of this crop in the south of Western Siberia. The scheme of the experiment included 20 variants, in 4 repetitions. The experiment included 5 new domestic varieties created by the author on the basis of the Novosibirsk State Agrarian University (55°01’ s. 82°55’ w.d.). The first domestic variety is Clarkia purpurea (Curtis) A. Nelson & J.F. Macbr. The Purple Fairy was characterized by an early flowering period (42±1 day after germination), Cv = 4,0 %, a short growing season of 102±2 days, high seed productivity (1000 seeds = 0,73±0,004 and seeds from one plant = 5,5±0.02 g), and pollen viability – 82 %, fruit setting – 93 % and seed productivity coefficient (KSP) – 83 % and high 100 % laboratory germination of seeds. Among the clarkia samples, sources of five different flowering periods were identified: 15 % – early flowering; 2) 15 % – mid-early flowering; 3) 20 % – medium flowering; 4) 40 % – mid-late blooming; 5) 10 % – late blooming. For the first time in the climatic conditions of the south of Western Siberia, temperature limits for the passage of interphase periods were established for 3 Clarkia species according to the sum of active temperatures above 10°C: С. рurpurea required the smallest sum of active temperatures above 10°C (Q1=801°C – Q3 =1723°C), with an average value of 1234°C. The sources of the abundance of flowering have been identified. The author’s varieties were distinguished by high seed qualities. A direct dependence of the seed productivity coefficient on the viability of pollen has been established (r = 0.99, p < 0.05). The early clarkia varieties, C. purpurea (5.5 g) and C. unguiculata (3.8 g), had the highest seed productivity. Thus, a comprehensive assessment of Clarkia samples served as the basis for the development of the national methodology RTG/1157/1 for conducting tests on Clarkia Pursh environmental protection systems, made it possible to identify sources of selectively valuable economic and biological traits and create a fund of original seeds that provides directions for further breeding and reproduction of promising samples for their further implementation in the production and landscaping of the region.
Author: E. V. Koroleva
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W4413061949