Effect of sugarcane drainage water and foliar application of L-amino ‎acids and salicylic acid on qualitative and quantitative characteristics of ‎Camelina (Camelina sativa L.) cultivars

Document Type : scientific research article

Authors

1 Ph.D. student, Department of Plant Production and Genetics, Shahid Chamran University of Ahvaz, Iran

2 Associate Professor, Department of Plant Production and Genetics, Shahid Chamran University of Ahvaz, Iran

3 Department of Plant Production and Genetics, Shahid Chamran University of Ahvaz

4 Professor, Department of Plant Genetics and Breeding, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

5 Associate Professor, Department of Plant Production and Genetics, Shahid Chamran University of Ahvaz, Iran ‎

Abstract

Abstract

Background and Objectives: Camelina as a medicinal-oil plant is one of the oldest ‎cultivated ‎plants of the Brassicaceae family. ‎Agricultural drainage water constitutes a large ‎amount of unconventional waters. However, the ‎foliar application of L-amino acids and ‎salicylic acid has been considered as a suitable method ‎to mittigate the adverse effects of ‎various environmental stresses on plant. However, there is ‎little information about their ‎mechanism for reducing the stress of using drainage water ‎resources. This experiment aimed to ‎evaluate the effect of sugarcane drainage water and foliar ‎application of L-amino acids and ‎salicylic acid on qualitative and quantitative characteristics of ‎Camelina (Camelina sativa) ‎cultivars.‎



‏ ‏Materials and Methods: This study was conducted during the 2022-2023 and 2023-‎‎2024 ‎growing seasons in the sugarcane industry of Hakim Farabi, located in southern ‎Khuzestan ‎Province, in a split-split plot design based on a randomized complete block design ‎with four ‎replications. The main plots consisted of different water sources: river water irrigation ‎‎(control), ‎alternative irrigation (alternating between river water and drain water), and sugarcane ‎drainage ‎water irrigation. Foliar application of L-amino acids and salicylic acid tested at five ‎levels, ‎including control (no foliar application), The L-amino acids used included alanine, ‎arginine, ‎aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, ‎lysine, ‎methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine ‎from ‎stock solutions of 1.5 and 3 l.ha-1., and 1 and 2 millimolar concentrations of salicylic ‎acid ‎during the flowering stage, which served as sub-plots. The cultivars Sohail and Sepehr ‎were ‎assigned as sub-sub plots. Data ‎analysis were done using SAS V. 9.4.‎



Results: Results indicated that the highest seed yield over the two years was obtained from ‎river ‎water irrigation combined with a foliar application of 3 l.ha-1 of L-amino acids in the ‎Sepehr ‎cultivar (1476 and 3609 kg.ha-1). In contrast, the lowest seed and oil yield was recorded ‎for the ‎Sepehr cultivar under irrigation with sugarcane drain water. The best seed and oil yield in ‎the ‎Soheil cultivar was also achieved with a foliar application of 3 l.ha-1 of L-amino acids (687 ‎and ‎‎1691 kg/ha). The Sepehr cultivar demonstrated higher grain and biological yields under ‎river ‎water irrigation conditions.The results showed that the foliar application of L-amino ‎acids and ‎salicylic acid under the conditions of using not using drainage water had a positive ‎effect on the ‎traits of grain yield, oil and protein, biological yield, and oil and protein ‎percentage. Among all ‎treatments, the foliar application of L-amino acids at 3 liters per hectare ‎achieved the best ‎performance under the conditions of using and not using drainage water. ‎Sepehr cultivar ‎showed lower performance than the Soheil cultivar under the conditions of ‎using drainage ‎water.‎



Conclusion: Foliar application of L-amino ‎acids and salicylic acid , as potential regulators for ‎increasing the growth and development of ‎Camelina, by increasing the absorption of nutrients, ‎moderated the effects of stress and ‎improved grain oil yield. Results showed that, in order to ‎improveing ionic relations in ‎Camelina, the Soheil cultivar and the foliar application of salicylic ‎acid and L-amino acids can ‎be used in the conditions of sugarcane drainage water irrigation. ‎The foliar applications positively influenced seed yield, biological yield, Oil yield, ‎Oil ‎percentage, Seed protein percentage and protein yield under both drainage water conditions ‎and ‎normal conditions. Foliar applications of enhanced the growth and development of ‎Camelina by improving nutrient ‎absorption, mitigating stress effects, and increasing seed yield. ‎Overall, it seems that the Soheil ‎cultivar exhibited better yield stability and could be cultivated ‎successfully using drainage water ‎of sugarcane fields in the region.‎

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