Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Creation of Salinity and Drought Resistant Mutant Rice Forms by Ionizing Radiation (Gamma and Neutron Radiation)

Kurmanbek Bakiruly
,
Aidos Zhalbyrov
,
Anastasiya Kruglyak
* ORCID logo ,
Yulia Aleksiayenak
ORCID logo ,
Gulsim Baimbetova
,
Zeinolla Yershin
,
Yury Gledenov
,
Aleksandr Doroshkevich
ORCID logo ,
Nurbol Appazov
ORCID logo
Version 1 : Received: 19 April 2023 / Approved: 19 April 2023 / Online: 19 April 2023 (10:53:56 CEST)

How to cite: Bakiruly, K.; Zhalbyrov, A.; Kruglyak, A.; Aleksiayenak, Y.; Baimbetova, G.; Yershin, Z.; Gledenov, Y.; Doroshkevich, A.; Appazov, N. Creation of Salinity and Drought Resistant Mutant Rice Forms by Ionizing Radiation (Gamma and Neutron Radiation). Preprints 2023, 2023040590. https://doi.org/10.20944/preprints202304.0590.v1 Bakiruly, K.; Zhalbyrov, A.; Kruglyak, A.; Aleksiayenak, Y.; Baimbetova, G.; Yershin, Z.; Gledenov, Y.; Doroshkevich, A.; Appazov, N. Creation of Salinity and Drought Resistant Mutant Rice Forms by Ionizing Radiation (Gamma and Neutron Radiation). Preprints 2023, 2023040590. https://doi.org/10.20944/preprints202304.0590.v1

Abstract

The article presents the results of the γ-ray and fast neutrons impact on various rice species, in order to obtain mutant forms resistant to salinity (NaCl) and drought factors (sorbite). They are going to be used as initial forms in synthetic selection when creating varieties, adapted to the stressful conditions of, both, soil and climate in the Kazakhstan Aral Sea. The average lethal doses (LD50) of γ-rays and fast neutrons, as well as, the average NaCl and sorbite lethal concentrations were established. A distinct dependence on the effect of ionizing radiation and stress factors on the number of induced resistant mutant forms has been related to the initial rice variety. The largest number of mutant forms was obtained from the local variety Syr Suluy, followed by Leader and Aikerim varieties. Out of all varieties, only 1% of the initially irradiated by γ-rays seeds survived, while after fast neutron irradiation – 4,3%. M1 mutant plants significantly differ from the initial forms in terms of morphological features – plant height, panicle length, and grain size. They are tolerant to lodging, and have short and highly sterile panicles, indicating that they are mutants.

Keywords

rice; variety; selection; mutagenesis; gamma rays; fast neutrons; salinity; drought tolerance; LD50

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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