Effects of Dicyandiamide on Physiology and Nitrate Accumulation of Hydroponic Cherry Radish

Q2 Agricultural and Biological Sciences
Fenghua Wang
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引用次数: 0

Abstract

Nitrate is an important factor affecting the safety of vegetables. How to reduce the content of nitrate has become a common concern in vegetable production. The effect of dicyandiamide (DCD) on physiology and nitrate accumulation was studied using hydroponic cherry radish as material, in order to lay a foundation for production radish with better quality. The results showed that DCD treatment increased the content of chlorophyll-a (Chl-a), carotenoid (Car) and anthocyanin while decreased Chl-b content. Treatment with 3% DCD reduced the nitrate content while 6% DCD increased it compared with the control. Furthermore, higher the nitrate content, lower was the nitrate reductase (NR) activity, which suggested that there was a negative correlation between nitrate content and NR activity in leaves of cherry radish. The stomatal density of leaves was almost the same between 3% DCD and the control, while it was lower under 6% DCD. To sum up, DCD significantly affected the photosynthetic pigment content of cherry radish, which may affect the photosynthesis. DCD also reduced the nitrate accumulation as well as increased the Car and anthocyanin content. These findings suggested that application of DCD may be an approval measurement to improve safety and appearance quality of hydroponic cherry radish. © 2022 Friends Science Publishers
双氰胺对水培樱桃萝卜生理及硝酸盐积累的影响
硝酸盐是影响蔬菜安全的重要因素。如何降低硝酸盐含量已成为蔬菜生产中普遍关注的问题。以水培樱桃萝卜为材料,研究了双氰胺(DCD)对萝卜生理及硝酸盐积累的影响,为生产优质萝卜奠定基础。结果表明,DCD处理提高了叶绿素a(Chl-a)、类胡萝卜素(Car)和花青素的含量,而降低了叶绿素b的含量。与对照组相比,3%DCD处理降低了硝酸盐含量,而6%DCD处理增加了硝酸盐浓度。此外,硝酸盐含量越高,硝酸还原酶(NR)活性越低,这表明樱桃萝卜叶片中硝酸盐含量与NR活性呈负相关。叶片气孔密度在3%DCD和对照之间几乎相同,而在6%DCD下则较低。综上所述,DCD显著影响樱桃萝卜的光合色素含量,可能影响光合作用。DCD还减少了硝酸盐的积累,增加了Car和花青素的含量。这些发现表明,DCD的应用可能是提高水培樱桃萝卜安全性和外观质量的一种认可措施。©2022 Friends Science出版社
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
International Journal of Agriculture and Biology
International Journal of Agriculture and Biology AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
1.70
自引率
0.00%
发文量
40
审稿时长
5 months
期刊介绍: Information not localized
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