Nano-Priming with La2O3 Improves Early Growth and Regulates Physio-Biochemical Mechanisms in Fragrant Rice Against Cadmium Toxicity

Sun, Fengrui; Chen, W. R.; Ren, Yong; Cheng, Siren; Ashraf, Umair; Zheng, Jiang Yu; Li, Lin; Ma, Yan; Tang, Xiangru; Mo, Zhaowen

doi:10.1007/s42729-023-01318-z

Cited by 11 publications

(2 citation statements)

References 72 publications

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“…Soluble proteins act as osmoregulatory substances in plants, thereby maintaining the integrity of the cell structure and function under stress conditions [20]. Ascorbic acid is one of the most abundant water-soluble antioxidants in plants.…”

Section: Discussionmentioning

confidence: 99%

“…The contents of chlorophyll and carotenoids were quantified as previously described [20]. Fresh seedling samples were immersed in 6 mL of 95% ethanol and incubated in the dark at 4 • C for 24 h. The samples were then centrifuged at 5000 rpm for 10 min at 4 • C. The absorbance of the supernatant was then measured at wavelengths of 665, 649, and 470 nm, respectively.…”

Section: Determination Of the Contents Of Chlorophyll And Carotenoidsmentioning

confidence: 99%

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The Effects of Different Organic Materials and Cover Thicknesses on the Early Growth and Antioxidant Response of Direct-Seeded Rice

Zeng,

Yu,

Liu

et al. 2023

Agronomy

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Direct-seeded rice (Oryza sativa) (DSR) is gaining increasing acceptance worldwide because it saves both time and labor. A covering treatment is a simple method to improve early plant growth under direct-seeding conditions. Herein, field experiments were conducted to study the effects of different powdered organic covering materials, i.e., organic fertilizer, seedling substrate, nutrient soil A, and nutrient soil B. In addition, the effects of different covering thicknesses were studied, including 5, 10, 15, and 20 mm, on the germination and early growth of DSR varieties. The two rice varieties Wufengyou 286 and Zhongjiazao 17 were used for this study. The seedling substrate at 15 mm and nutrient soil A at 5 mm covering thickness significantly increased the rate of germination of Wufengyou 286 by 43.93% and 40.26%, respectively, compared to the control treatment. Organic fertilizer, seedling substrate, and nutrient soil A at covering thicknesses of 5 mm significantly increased the germination rate by 42.57%, 38.62%, and 40.10%, respectively, compared to the control. Notably, all the treatments increased the emergence rate, with Wufengyou 286 exhibiting the most pronounced effect. The seedling substrate at 10 mm covering thickness significantly increased the rate of emergence of Wufengyou286 by 15.42% compared to the control. Similarly, the seedling substrate at 10 mm covering thickness gave the best results by increasing the rate of emergence of Zhongjiazao 17 by 10.85% compared to the control. On average, the rate of emergence of Wufengyou 286 and Zhongjiazao 17 under the experimental treatment increased by 11.81% and 6.45%, respectively, compared to the control. The appropriate cover treatment enhanced the early growth of DSR by improving its morphological attributes, such as plant height and dry weight, and regulating the physio-biochemical responses, such as the production of antioxidants and photosynthetic pigments. The seedling growth rate of both varieties decreased as the thickness increased. This study elucidated the effects of different covering materials on the early growth of DSR, which can further guide their actual production.

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Section: Discussionmentioning

confidence: 99%

Section: Determination Of the Contents Of Chlorophyll And Carotenoidsmentioning

confidence: 99%