Effects of Soil Exogenous Nitrogen on Bamboo (dendrocalamus Latiflorus Munro) Shoots, Photosynthetic Characteristics, and Nitrogen Metabolism
Year: 2022
Type: article
Abstract: Nitrogen (N) is an essential nutrient element that is involved in almost every aspect of a plant's physiological mechanism.Therefore, the current research aims to determine the optimal amount of N fertilizer for bamboo seedlings for better nutrient management practices to minimize N pollution in bamboo forests.We evaluated the physiological response of Dendrocalamus latiflorus Munro grown under five varying levels of N fertilizer; such as N0, N1, N2, N3, N4, and N5 (0, 1.50, 3.00, 4.50, 6.00, and 7.50 g•pot -1 , respectively).N4 treatment had a significant effect on the number of shoots, which was greatly correlated with net photosynthetic rate (Pn) and photosynthetic pigment including carotenoid (Car), total chlorophyll (Chls), and Chl a per b ratio (Chl a/b) as well as N-related indices [leaf N, leaf ammonium N (NH4 + -N), and nitrate reductase (NR)].N supply significantly increased soil carbon and N contents, which could be conducive to the accumulation of leaf chlorophyll content, improving leaf photosynthesis mechanism, and accelerating N metabolism and conversion through an enzymatic reaction.Overall, the N application of 6.00 g•pot -1 was advantageous to improving physiological characteristics and shoot production of seedlings, which provided a theoretical basis for improving bamboo nitrogen use efficiency and high-yield cultivation.
Institution: Fujian Agriculture and Forestry University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W4312912422