|
Knudson B
Originally cited by Knudson, 1925 (Physiological studies of the symbiotic germination of orchid seeds. Botanical Gazette, 79, 345-79), 1946 (A new nutrient solution for orchid seed germination. American Orchid Society Bulletin, 15, 214-17).
|
Ca(NO3)2 * 4 H2O
|
1000 mg
|
|
KH2PO4
|
250 mg
|
|
MgSO4 * 7 H2O
|
250 mg
|
|
(NH4)2SO4
|
500 mg
|
|
FePO4 * 4 H2O
|
50 mg (1925 formula)
|
|
Sucrose
|
20 g
|
|
Agar
|
12 g (1925 formula)
15 (1946 formula)
|
|
Note: This medium does not employ the use of chelated iron, resulting in the formation of insoluble (and therefore unavailable) iron phosphate. As a result, this medium is very iron-poor.
Source: Rasmussen, H. Terrestrial orchids from seed to mycotrophic plant. Cambridge University Press, Cambridge. 1995.
|
