Physiol Plant. 2022 Sep 10:e13779. doi: 10.1111/ppl.13779. Online ahead of print.
ABSTRACT
The current study was performed under controlled conditions to study the effects of exogenous potassium application on carotenoid contents and drought tolerance in Camelina. Water deficit levels such as 100% FC (control) and 40% FC (drought stress) were imposed after germination of Camelina plants grown to maturity, and different treatments of exogenous K+ were applied at the vegetative stage. We have reported seventeen traits of plant growth, physiology, antioxidant enzyme activity, focusing on carotenoids in Camelina to explore their potential yield and yield components. For this purpose, we used multivariate analysis techniques (descriptive statistics, correlation matrix, analysis of variance (ANOVA) and principal components analysis (PCA) to determine the best relation between potassium and studied traits. The results showed a large number of variations in the studied trait under control and water deficit condition. Plant fresh weight (g) was negatively correlated with shoot length and SOD insignificantly correlated with plant fresh weight (g) under water deficit conditions. Potassium loading predicted that foliar application (3mM K2SO4), foliar application (6mM KNO3), foliar application (12mM KNO3) and foliar application (12mM K2SO4) are the important doses that contribute the most to enhance the growth, physiological and biochemical activities and carotenoids to improve the Camelina yield under water deficit condition. These doses should be considered in the future to improve the Camelina yield under semi-arid conditions with increased genetic diversity (varietal selection). This article is protected by copyright. All rights reserved.
PMID:36087099 | DOI:10.1111/ppl.13779
