Record ID No. |
1123 |
Author(s) |
Yen ChiangHer., Chou MingChien , 2006 |
Affiliation |
Department of Forestry, National Chung-Hsing University, 250 Kuokuang Rd., Taichung 40227, Taiwan. |
Title |
Effects of nodules and mycorrhiza on the N-fixation of Casuarina equisetifolia with different nutrient treatments |
Source. Vol.(no):Page |
Taiwan-Journal-of-Forest-Science. 21(4): 523-530p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Nodule forming nitrogen fixers |
Host |
Casuarina equisetifolia |
Organism |
Frankia, AMF |
Country |
Taiwan, Asia |
Abstracts |
This study was conducted to monitor the N-fixation activity of Casuarina equisetifolia inoculated with Frankia as well as arbuscular mycorrhizal fungi (AMF) and to which 1/2 Hoagland's solution, 1/2 Hoagland's solution deficient in N, and 1/2 Hoagland's solution deficient in Mo-Fe treatments were applied, in order to observe the growth performance of the seedlings. The results showed that the height, root collar, and dry weight of C. equisetifolia treated with 1/2 Hoagland's solution were better than those with the other treatments. Seedling nodulation and N-fixation activity with treatment with 1/2 Hoagland's solution deficient in N were the best, while the growth and N-fixation activity with treatment with 1/2 Hoagland's solution deficient in Mo-Fe were the least. Seedlings inoculated with Frankia and AMF had the best performance for nodulation and N-fixation activity. Diurnal variations in N-fixation activity were monitored, and results showed distinct differences among treatments. The N-fixation activity rose gradually from 800 h, and reached a maximum at 1400-1500 h. Seedlings treated with Frankia and arbuscular mycorrhizal fungi and to which 1/2 Hoagland's solution deficient in N was applied had the highest N-fixation activity (9.12-11.24 micro mol C2H4 h-1 plant-1), and to which 1/2 Hoagland's solution was applied had the next highest N-fixation activity (7.47-9.22 micro mol C2H4 h-1 plant-1). The control had the lowest N-fixation activity (0.66-3.36 micro mol C2H4 h-1 plant-1).. |