University of Guilan Iranian Journal of Seed Sciences and Research 2476-3780 11 1 2024 03 20 The effect of salicylic acid on some seed quality characteristics and yield components of spring barley under flooded stress in greenhouse conditions The effect of salicylic acid on some seed quality characteristics and yield components of spring barley under flooded stress in greenhouse conditions 89 102 8040 10.22124/jms.2024.8040 FA Saeed Khomari Associate Professor, Crop Physiology, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran Mohammadreza Asghari Ph.D student, Crop Ecology, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran Maryam Sabouri MSc. Graduated, Seed Science and Technology, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran Mohammad Sedghi Professor, Crop Physiology, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran Salim Farzaneh Associate Professor, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran Journal Article 2024 05 08 This research was conducted to investigate the effect of waterlogging stress on the quality characteristics of barley seeds. Therefore, this factorial experiment was carried out based on a randomized complete block design in greenhouse complex at the Faculty of Agriculture and Natural Resources of University of Mohaghegh Ardabili during 1402-1403. This study considered three factors of waterlogging stress, concentrations of salicylic acid, and time of foliar application of hormone. So the foliar application of salicylic acid in four concentrations (zero, one, two, and four mM) and two stages (the last day of flooding and during the growth recovery period) and waterlogging stress at two levels (control and application of waterlogging condition at the end of stem elongation) were applied. The results showed that waterlogging stress had an effect on most of the morphological traits of the plant and also on the quality characteristics of the barley seeds except for the number of leaves, the number of fertile spikes in the plant, and the number of non-fertile spikes in the plant and caused a decrease in these traits. On the other hand, foliar spraying of salicylic acid compensated for this decrease in the mentioned traits. So in these traits, the effect of salicylic acid in the second foliar spraying was greater than the first foliar spraying; and in both times, the concentration of 4 mM had the greatest effect on the aforementioned traits. This research was conducted to investigate the effect of waterlogging stress on the quality characteristics of barley seeds. Therefore, this factorial experiment was carried out based on a randomized complete block design in greenhouse complex at the Faculty of Agriculture and Natural Resources of University of Mohaghegh Ardabili during 1402-1403. This study considered three factors of waterlogging stress, concentrations of salicylic acid, and time of foliar application of hormone. So the foliar application of salicylic acid in four concentrations (zero, one, two, and four mM) and two stages (the last day of flooding and during the growth recovery period) and waterlogging stress at two levels (control and application of waterlogging condition at the end of stem elongation) were applied. The results showed that waterlogging stress had an effect on most of the morphological traits of the plant and also on the quality characteristics of the barley seeds except for the number of leaves, the number of fertile spikes in the plant, and the number of non-fertile spikes in the plant and caused a decrease in these traits. On the other hand, foliar spraying of salicylic acid compensated for this decrease in the mentioned traits. So in these traits, the effect of salicylic acid in the second foliar spraying was greater than the first foliar spraying; and in both times, the concentration of 4 mM had the greatest effect on the aforementioned traits. https://jms.guilan.ac.ir/article_8040_e53bb067703a13ea97d48fddeadbc559.pdf