Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings
Excentrodendron hsienmu, a karst-endemic tree species of high ecological and economic value, is classified as endangered and nationally protected in China. This study aimed to establish a theoretical basis for the propagation and conservation of E. hsienmu by evaluating the effects of nitrogen–calc...
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AcademicPres
2025-06-01
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| Series: | Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
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| Online Access: | https://www.notulaebotanicae.ro/index.php/nbha/article/view/14443 |
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| author | Xixian LIANG Jie PANG Yan HUANG Xingyue HUANG |
| author_facet | Xixian LIANG Jie PANG Yan HUANG Xingyue HUANG |
| author_sort | Xixian LIANG |
| collection | DOAJ |
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Excentrodendron hsienmu, a karst-endemic tree species of high ecological and economic value, is classified as endangered and nationally protected in China. This study aimed to establish a theoretical basis for the propagation and conservation of E. hsienmu by evaluating the effects of nitrogen–calcium fertilization on seedling growth and photosynthetic performance. One-year-old seedlings were subjected to nine treatment combinations of pure nitrogen (1.0, 2.0, 3.0 g/plant) and pure calcium (1.5, 3.0, 4.5 g/plant). Results showed that all fertilization treatments significantly improved seedling growth and photosynthetic traits compared to the control. The N2Ca2 treatment (2.0 g N and 3.0 g Ca per plant) yielded the highest increases in height (26.20 cm), ground diameter (6.96 mm), total biomass (85.64 g), root system development, and chlorophyll content. Additionally, photosynthetic parameters such as net photosynthetic rate (13.96 µmol·m-²·s-¹) and transpiration rate (4.21 mmol·m-²·s-¹) were significantly enhanced under N2Ca2. All measured characteristics, except stomatal conductance, differed significantly from the control (p < 0.05). These findings provide a scientific foundation for the optimized cultivation, restoration, and conservation of E. hsienmu.
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| format | Article |
| id | doaj-art-a94440c6942d4962a3372eddd3164f8a |
| institution | DOAJ |
| issn | 0255-965X 1842-4309 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | AcademicPres |
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| series | Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
| spelling | doaj-art-a94440c6942d4962a3372eddd3164f8a2025-08-20T02:42:12ZengAcademicPresNotulae Botanicae Horti Agrobotanici Cluj-Napoca0255-965X1842-43092025-06-0153210.15835/nbha53214443Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlingsXixian LIANG0Jie PANG1Yan HUANG2Xingyue HUANG3Guangxi Vocational University of Agriculture, College of Urban-Rural Construction, Nanning 530004Guangxi University of Finance and Economics, College of Management Science and Engineering, Nanning 530007Guangxi Vocational University of Agriculture, College of Urban-Rural Construction, Nanning 530004Guangxi Vocational University of Agriculture, College of Urban-Rural Construction, Nanning 530004 Excentrodendron hsienmu, a karst-endemic tree species of high ecological and economic value, is classified as endangered and nationally protected in China. This study aimed to establish a theoretical basis for the propagation and conservation of E. hsienmu by evaluating the effects of nitrogen–calcium fertilization on seedling growth and photosynthetic performance. One-year-old seedlings were subjected to nine treatment combinations of pure nitrogen (1.0, 2.0, 3.0 g/plant) and pure calcium (1.5, 3.0, 4.5 g/plant). Results showed that all fertilization treatments significantly improved seedling growth and photosynthetic traits compared to the control. The N2Ca2 treatment (2.0 g N and 3.0 g Ca per plant) yielded the highest increases in height (26.20 cm), ground diameter (6.96 mm), total biomass (85.64 g), root system development, and chlorophyll content. Additionally, photosynthetic parameters such as net photosynthetic rate (13.96 µmol·m-²·s-¹) and transpiration rate (4.21 mmol·m-²·s-¹) were significantly enhanced under N2Ca2. All measured characteristics, except stomatal conductance, differed significantly from the control (p < 0.05). These findings provide a scientific foundation for the optimized cultivation, restoration, and conservation of E. hsienmu. https://www.notulaebotanicae.ro/index.php/nbha/article/view/14443endangered plantExcentrodendron hsienmu seedlingsgrowth characteristicsnitrogen–calcium fertilizationphotosynthetic characteristics |
| spellingShingle | Xixian LIANG Jie PANG Yan HUANG Xingyue HUANG Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings Notulae Botanicae Horti Agrobotanici Cluj-Napoca endangered plant Excentrodendron hsienmu seedlings growth characteristics nitrogen–calcium fertilization photosynthetic characteristics |
| title | Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings |
| title_full | Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings |
| title_fullStr | Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings |
| title_full_unstemmed | Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings |
| title_short | Effects of different ratios of nitrogen–calcium fertilization on growth and photosynthetic characteristics in the endangered plant Excentrodendron hsienmu seedlings |
| title_sort | effects of different ratios of nitrogen calcium fertilization on growth and photosynthetic characteristics in the endangered plant excentrodendron hsienmu seedlings |
| topic | endangered plant Excentrodendron hsienmu seedlings growth characteristics nitrogen–calcium fertilization photosynthetic characteristics |
| url | https://www.notulaebotanicae.ro/index.php/nbha/article/view/14443 |
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