نوع مقاله : مقاله کامل علمی پژوهشی
نویسندگان
1 دانشجوی دکتری گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران
2 دانشیار گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران
3 گروه مهندسی تولید و ژنتیک گیاهی، دانشگاه شهید چمران اهواز
4 استاد گروه ژنتیک و به‌نژادی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران
5 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژه‌ها [English]
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