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Characterising Biological and Physiological Drought Signals in Diverse Parents of a Wheat Mapping Population.

Authors :
Laskoś, Kamila
Czyczyło-Mysza, Ilona Mieczysława
Waligórski, Piotr
Dziurka, Kinga
Skrzypek, Edyta
Warchoł, Marzena
Juzoń-Sikora, Katarzyna
Janowiak, Franciszek
Dziurka, Michał
Grzesiak, Maciej T.
Grzesiak, Stanisław
Quarrie, Steve
Marcińska, Izabela
Source :
International Journal of Molecular Sciences. Jun2024, Vol. 25 Issue 12, p6573. 18p.
Publication Year :
2024

Abstract

Water deficit affects the growth as well as physiological and biochemical processes in plants. The aim of this study was to determine differences in physiological and biochemical responses to drought stress in two wheat cultivars—Chinese Spring (CS) and SQ1 (which are parents of a mapping population of doubled haploid lines)—and to relate these responses to final yield and agronomic traits. Drought stress was induced by withholding water for 14 days, after which plants were re-watered and maintained until harvest. Instantaneous gas exchange parameters were evaluated on the 3rd, 5th, 10th, and 14th days of seedling growth under drought. After 14 days, water content and levels of chlorophyll a+b, carotenoids, malondialdehyde, soluble carbohydrates, phenolics, salicylic acid, abscisic acid (ABA), and polyamines were measured. At final maturity, yield components (grain number and weight), biomass, straw weight, and harvest index were evaluated. Physiological and biochemical parameters of CS responded more than those of SQ1 to the 14-day drought, reflected in a greater reduction in final biomass and yield in CS. Marked biochemical differences between responses of CS and SQ1 to the drought were found for soluble carbohydrates and polyamines. These would be good candidates for testing in the mapping population for the coincidence of the genetic control of these traits and final biomass and yield. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16616596
Volume :
25
Issue :
12
Database :
Academic Search Index
Journal :
International Journal of Molecular Sciences
Publication Type :
Academic Journal
Accession number :
178186001
Full Text :
https://doi.org/10.3390/ijms25126573