Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages

Yan, Zhengnan; Cao, Xiuxiu; Bing, Lixue; Song, Jinxiu; Qi, Ye; Han, Qingyan; Yang, Yanjie; Lin, Duo

doi:10.3390/agronomy14102270

Open AccessArticle

Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages

by

Zhengnan Yan

^1,†,

Xiuxiu Cao

^1,†,

Lixue Bing

¹,

Jinxiu Song

²

,

Ye Qi

³,

Qingyan Han

⁴,

Yanjie Yang

¹ and

Duo Lin

^1,*

¹

College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China

²

College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

³

Shandong Qicai Manor Vegetable Food Base Co., Ltd., Shouguang 262700, China

⁴

Key Laboratory of Facility Vegetable of Jilin Province, Jilin Academy of Vegetable and Flower Sciences, Changchun 130119, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Agronomy 2024, 14(10), 2270; https://doi.org/10.3390/agronomy14102270

Submission received: 28 August 2024 / Revised: 26 September 2024 / Accepted: 29 September 2024 / Published: 1 October 2024

(This article belongs to the Special Issue Towards Sustainability of Controlled Environment Agriculture: Vertical Farms vs. Greenhouses)

Download

Browse Figures

Versions Notes

Abstract

The concentration of nitrogen fertilizer is matched with the nutrient requirements in different growth stages of plants, which coordinates their vegetative and reproductive growth. In this study, the influences of nitrogen concentration before and after initiation of flower bud differentiation (first and second stage, respectively) on pepper seedling quality were studied. The chlorophyll a content, sucrose synthase activity, and sucrose phosphate synthase activity of pepper seedlings grown under moderate nitrogen (15 mmol L⁻¹) in the first stage combined with high nitrogen (25.61 mmol L⁻¹) in the second stage were 15.7%, 39.3%, and 34.6% higher than those of the same nitrogen concentration (15 mmol L⁻¹) in the first and second stages treatment, respectively. The regression model also showed that the values of flower bud diameter, shoot fresh weight, root fresh weight, and glutamine synthetase activity of pepper were high under the condition of moderate nitrogen in the first stage and higher nitrogen in the second stage. In addition, the results of comprehensive evaluation showed that moderate nitrogen (15 mmol L⁻¹) in the first stage and high nitrogen (25.61 mmol L⁻¹) in the second stage treatment ranked first, which improved carbon and nitrogen metabolism, increased biomass accumulation, and promoted the flower bud differentiation and flowering of pepper seedlings.

Keywords: chlorophyll content; comprehensive evaluation; flower bud; nitrogen concentration; pepper seedling

Share and Cite

MDPI and ACS Style

Yan, Z.; Cao, X.; Bing, L.; Song, J.; Qi, Y.; Han, Q.; Yang, Y.; Lin, D. Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages. Agronomy 2024, 14, 2270. https://doi.org/10.3390/agronomy14102270

AMA Style

Yan Z, Cao X, Bing L, Song J, Qi Y, Han Q, Yang Y, Lin D. Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages. Agronomy. 2024; 14(10):2270. https://doi.org/10.3390/agronomy14102270

Chicago/Turabian Style

Yan, Zhengnan, Xiuxiu Cao, Lixue Bing, Jinxiu Song, Ye Qi, Qingyan Han, Yanjie Yang, and Duo Lin. 2024. "Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages" Agronomy 14, no. 10: 2270. https://doi.org/10.3390/agronomy14102270

APA Style

Yan, Z., Cao, X., Bing, L., Song, J., Qi, Y., Han, Q., Yang, Y., & Lin, D. (2024). Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages. Agronomy, 14(10), 2270. https://doi.org/10.3390/agronomy14102270

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Responses of Growth, Enzyme Activity, and Flower Bud Differentiation of Pepper Seedlings to Nitrogen Concentration at Different Growth Stages

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI