University of Guilan Iranian Journal of Seed Sciences and Research 2476-3780 11 3 2024 09 22 Effect of seaweed foliar application and bacterial inoculation on the morpho-physiological traits of Dracocephalum moldavica L. in salt stress conditions Effect of seaweed foliar application and bacterial inoculation on the morpho-physiological traits of Dracocephalum moldavica L. in salt stress conditions 79 93 8794 10.22124/jms.2024.8794 FA Fariba Vafaahd Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran Shiva Khalesro Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran Fatemeh Sefidkon Medicinal and Aromrtic Plants Research Division, Research Institute of Forests and Rangelands, Tehran, Iran Batool Mahdavi, Department of Plant Production and Genetics, Faculty of Agriculture, University of Vali-e-Asr Rafsanjan, Iran Journal Article 2024 08 19 Salinity stress is one of the environmental factors limiting the growth and development of plants. This research was conducted to evaluate the effect of salinity stress and biofertilizers on the morpho-physiological traits of the dragonhead. The experimental treatments included biofertilizers at four levels (control, bacteria pseudomonas fluorescens, algae Sargassum boveanum, algae Sargassum boveanum + bacteria pseudomonas fluorescens) and salinity stress at four levels (0, 50, 100, 150 mM). The research was set up as a factorial experiment using a randomized complete block design with four replications at the greenhouse of the Faculty of Agriculture of the Kurdistan University in 2023. The results showed that the integrated application of algae and bacteria resulted in the highest values of morpho-physiological traits included plant height, root length, root volume, dry weight of aerial part, and protein of dragonhead. But with the increase of salinity stress levels, the mentioned characteristics decreased. Additionally, biofertilizers had a significant impact on the proline, chlorophyll, and peroxidase enzyme in the salinity stress conditions. Therefore, the integrated treatment of Sargassum boveanum foliar application and pseudomonas fluorescens inoculation not only had a positive effect on the morpho-physiological traits of dragonhead under salinity stress conditions, but also they are the key approach to achieve sustainable agricultural goals. Salinity stress is one of the environmental factors limiting the growth and development of plants. This research was conducted to evaluate the effect of salinity stress and biofertilizers on the morpho-physiological traits of the dragonhead. The experimental treatments included biofertilizers at four levels (control, bacteria pseudomonas fluorescens, algae Sargassum boveanum, algae Sargassum boveanum + bacteria pseudomonas fluorescens) and salinity stress at four levels (0, 50, 100, 150 mM). The research was set up as a factorial experiment using a randomized complete block design with four replications at the greenhouse of the Faculty of Agriculture of the Kurdistan University in 2023. The results showed that the integrated application of algae and bacteria resulted in the highest values of morpho-physiological traits included plant height, root length, root volume, dry weight of aerial part, and protein of dragonhead. But with the increase of salinity stress levels, the mentioned characteristics decreased. Additionally, biofertilizers had a significant impact on the proline, chlorophyll, and peroxidase enzyme in the salinity stress conditions. Therefore, the integrated treatment of Sargassum boveanum foliar application and pseudomonas fluorescens inoculation not only had a positive effect on the morpho-physiological traits of dragonhead under salinity stress conditions, but also they are the key approach to achieve sustainable agricultural goals.

https://jms.guilan.ac.ir/article_8794_a37fd889974e810e1c9be5d882826da7.pdf