Chunping Wang^1* , Shicai Zhang^2* , Hong Wu¹ , Xiaomiao Yang² , Rongli Tang¹ , Yifei Li² , Xiaoying Jiang¹ , Kairong Lei¹ , Renzhong Huang² , Qizhong Huang² , Qing Lin¹

1 Chongqing Key Laboratory of Adversity Agriculture, Biotechnology Research Center, Chongqing Academy of Agricultural Sciences, Chongqing, 401329, P.R. China
2 Vegetable and Flower Research Institute, Chongqing Academy of Agricultural Sciences, Chongqing, 401329, P.R. China
* These authors contributed equally to this work
Author    Correspondence author
Molecular Plant Breeding, 2021, Vol. 12, No. 24   doi: 10.5376/mpb.2021.12.0024
Received: 24 Aug., 2021    Accepted: 31 Aug., 2021    Published: 15 Sep., 2021

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Wang C.P., Zhang S.C., Wu H., Yang X.M., Tang R.L., Li Y.F., Jiang X.Y., Lei K.R., Huang R.Z., Huang Q.Z., and Lin Q., 2021, Dry matter accumulation and nitrogen absorption characteristics of processed pepper under different nitrogen levels, Molecular Plant Breeding, 12(24): 1-6 (doi: 10.5376/mpb.2021.12.0024)

In order to promote the rational use of nitrogen fertilizer, the dry matter accumulation, nitrogen absorption of processed pepper were studied by substrate culture and quantitative irrigation of nutrient solution under 6 different nitrogen levels (60%, 80%, 90%, 100%, 120% and 140% of the normal N application). It showed that, with the increase of nitrogen application, the dry weight of leaf, dry weight of fruit, dry weight of stem, dry weight of root, and dry weight of plant were increasing; The nitrogen content of each part run up to the maximum at 80%~100% nitrogen level; There was no significant difference between the dry weight of leaf, dry weight of root, and dry weight of fruit, as well as nitrogen content and nitrogen accumulation of these parts at 90%, 100%, 120% and 140% nitrogen level. Correlation analysis showed that nitrogen accumulation showed the highest correlation with the dry weight of leaf, dry weight of stem, dry weight of fruit, dry weight of root, and dry weight of plant, but had little correlation with nitrogen content in each part. In addition, the slight difference in nitrogen content of plant at different nitrogen levels can reflect its nutritional status, while the amount of dry matter can reflect its amount of nitrogen accumulation. This study will provide theoretical reference for rational application of nitrogen fertilizer in processed pepper.

Nitrogen; Processed pepper; Dry matter; Nitrogen absorption