文献类型： 外文期刊

作者： Hafez, Emad M. ¹ ; Gao, Yan ² ; Alharbi, Khadiga ⁴ ; Chen, Wei ² ; Elhawat, Nevien ⁵ ; Alshaal, Tarek ⁵ ; Osman, Hany S. ⁸ ;

作者机构： 1.Kafrelsheikh Univ, Fac Agr, Dept Agron, Kafr Al Sheikh 33516, Egypt

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

3.Minist Agr & Rural Affairs Peoples Republ China, Key Lab Agroenvironm Downstream Yangze Plain, Nanjing 210014, Peoples R China

4.Princess Nourah bint Abdulrahman Univ, Coll Sci, Dept Biol, POB 84428, Riyadh 11671, Saudi Arabia

5.Univ Debrecen, Fac Agr & Food Sci & Environm Management, Dept Appl Plant Biol, Boszormeny Str 138, H-4032 Debrecen, Hungary

6.Al Azhar Univ, Fac Agr Girls, Cairo 11884, Egypt

7.Kafrelsheikh Univ, Fac Agr, Soil & Water Dept, Kafr Al Sheikh 33516, Egypt

8.Ain Shams Univ, Fac Agr, Dept Agr Bot, Cairo 11241, Egypt

关键词： antioxidants; canola; drought; deficit irrigation; salt-affected soil; sugarcane bagasse ash; wood distillate; physiological responses

期刊名称：PLANTS-BASEL （ 影响因子：4.0； 五年影响因子：4.4 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 15 期

页码：

收录情况： SCI

摘要： In the context of increasing agricultural challenges posed by soil salinity and drought stress, the main importance of the present study was to evaluate some novel treatments for improving canola productivity and resilience by applying wood distillate (WD) in combination with bagasse ash (SBA). A two-year field experiment using a split plot design was conducted and evaluated several physiological and biochemical parameters under different irrigation regimes conducted at 80% and 50% field capacity. While there were considerable moderation effects of SBA and WD on soil salinity, expressed as exchangeable sodium percentage (ESP), under both well-irrigated and drought conditions, more importantly, the ESP was reduced to 31% under drought stress with combined WD and SBA applications over any single factor. WD and SBA treatments of canola leaves showed reduced Na content with increased K levels, and the plants maintained physiological attributes-chlorophyll content, stomatal conductance, and relative water content-to the level of controls of well-irrigation. Besides, they significantly alleviated oxidative stress by decreasing the hydrogen peroxide (H2O2), malondialdehyde (MDA), and electrolyte leakage (EL) levels and increasing the activities of antioxidant enzymes like superoxide dismutase (SOD) and ascorbate peroxidase (APX). Nonenzymatic antioxidants such as total soluble sugars (TSS), total soluble proteins (TSP), total phenolic content (TPC), and total flavonoid content (TFC) were significantly increased under stress conditions with a special accent on combined treatment, whereas the levels of proline and GB that increased in alignment with drought reduced under the combined application. Various growth parameters of plants like plant height, number of branches, and siliques per plant were significantly improved with WD and SBA under drought stress. Principal component analysis (PCA) and Pearson correlation further confirmed the relationships among these parameters and thus underpinned that WD and SBA can evoke a synergistic effect to enhance growth promotion and stress tolerance in canola. This, therefore, infers that the combined application of WD and SBA can be key, offering very high potential as viable options to better canola productivity under adverse environmental conditions.