PJB-2022-438
The use of introgressive hybrids in the selection of Kochia prostrata (L.) Schrad
Nurgul Meldebekova, Galymzhan Kenzhegaliev, Kanysh Kushenov, Kanat Shanbayev and Elmira Kantarbaeva
Abstract
In the territory of Kazakhstan, introgressive hybridisation is documented in many species of forage plants of the North Turan. Regarding Kochia prostrata, the facts of introgression at the subspecies level become known, therefore, it indicates the existence of spontaneous hybrids. It showed the morphological similarity of the so-called "rocky ecotypes" with natural hybrid populations. In the second stage (2000-2005), more in-depth studies based on the theory of introgressive hybridisation clarified the origin of rocky ecotypes as a result of the evolutionary incompleteness of the subspecies stage. Subsequently, the analysis of the species area of K. prostrata, conducted by the authors based on the results of expeditionary studies, allowed identifying 5 foci (microcentres) of localisation of introgressive hybrids in the territory of Kazakhstan and Central Asia. The applied use of these natural hybrids served as a theoretical justification for the deployment of large-scale selection work. Based on the results of many years of research (2005-2015), the authors have successfully developed the main methods of the selection of K. prostrata. The creation of hay-type varieties using rocky (introgressive) populations was a new area in selection practice. This study presents the materials of the completed process of selection from collection nurseries to the final stage of the State Testing of the Isken variety, covering a period of more than 15 years
To Cite this article:
Meldebekova, N., G. Kenzhegaliev, K. Kushenov, K. Shanbayev and E. Kantarbaeva. 2024. The use of introgressive hybrids in the selection of Kochia prostrata (L.) Schrad. Pak. J. Bot., 56(3): DOI: http://dx.doi.org/10.30848/PJB2024-3(35)
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