Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Ameliorating Spring Wheat Productivity in Drought Conditions: Identification of Correlations of Rht (-b1a, -b1b, d1a, d1b) Semi-dwarfism Genes and Coarse-Grained TaGW8-b1a, TaGS 5–3a

Lyudmila Zotova
,
Zhumalin Aibek
,
Aissarat Gajimuradova
,
Meisam Zargar
* ORCID logo ,
Dauren Serikbay
,
Liang Chen
,
Timur Savin
ORCID logo ,
Aiman Rysbekova
ORCID logo ,
Zhangchen Zhao
Version 1 : Received: 3 October 2023 / Approved: 4 October 2023 / Online: 4 October 2023 (04:21:35 CEST)

How to cite: Zotova, L.; Aibek, Z.; Gajimuradova, A.; Zargar, M.; Serikbay, D.; Chen, L.; Savin, T.; Rysbekova, A.; Zhao, Z. Ameliorating Spring Wheat Productivity in Drought Conditions: Identification of Correlations of Rht (-b1a, -b1b, d1a, d1b) Semi-dwarfism Genes and Coarse-Grained TaGW8-b1a, TaGS 5–3a. Preprints 2023, 2023100195. https://doi.org/10.20944/preprints202310.0195.v1 Zotova, L.; Aibek, Z.; Gajimuradova, A.; Zargar, M.; Serikbay, D.; Chen, L.; Savin, T.; Rysbekova, A.; Zhao, Z. Ameliorating Spring Wheat Productivity in Drought Conditions: Identification of Correlations of Rht (-b1a, -b1b, d1a, d1b) Semi-dwarfism Genes and Coarse-Grained TaGW8-b1a, TaGS 5–3a. Preprints 2023, 2023100195. https://doi.org/10.20944/preprints202310.0195.v1

Abstract

Wheat yield plays an important role in the global economy. Changing climate conditions and increased drought negatively affect grain yield. Currently, breeding programs are aimed at improving wheat productivity. To accelerate the selection process of hybrids and parental forms for crosses, it is essential to pay attention to plants' phenotypic and genetic potential. We studied the genes of the "green revolution" group Rht and coarse-grained TaGW and TaGS to increase yields by selecting optimal parameters for wheat. We focused on short-stemmed and coarse-grained characteristics in a dry climate and conducted a correlation analysis between the genetic potential of wheat varieties and hybrids and their phenotypic manifestation in drought conditions. Rht-D1b significantly reduced the height of plants by 51.67% and reduced the coleoptile length by 30.45%. At the same time, TaGW8-B1a increased the grain width by 13.37%. However, in the presence of Rht-D1b and Rht-B1b in the genome, the 1000-kernal weight was 35.06 g (p<0.05), the Rht-B1b gene enhanced it by 9% (p<0.05), while both Rht-D1a and Rht-B1a alleles gave a 1000-kernal weight of 37.96 g (p<0.05). The Rht-D1b and Rht-B1b alleles gave 18.5 seeds per ear, while the Rht-D1a and Rht-B1a alleles gave the value of grains per ear -24.1 pcs. The data obtained indicated the relationship of phenotypic and genetic parameters in wheat between the coarse-grained and short-stemmed genes, which makes it possible to select based on the genetic parameters of varieties and hybrids, thereby speeding up the selection process.

Keywords

Spring wheat; Drought conditions; semi-dwarf genes; grain weight genes; selection

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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