The influence of the mineral composition of the medium on the growth of planktonic algae Part 1. Methods and culture media
The influence of the mineral composition of the medium on the growth of planktonic algae Part 1. Methods and culture media
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DOI：
10.2307/2256574
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发表时间：
1942-01-01
影响因子：
5.5
通讯作者：
Chu, SP
中科院分区：
文献类型：
--
作者：
Chu, SP
在纯培养条件下，14种浮游藻类在繁盛状态下保持了50 ~ 20年。在成分和稀释程度与天然水相当的介质中。详细研究了6种藻类（boryanum、paradoxum、Botryococcus braunii、Asterionella gracillima、Fragilaria crotonensis、Nitzschia acacularis和N. palea）的需水量。除了少数例外，藻类在含有硝酸盐或无氮的培养基中生长得同样好。盐。最有利的条件。Ca、Mg、K、Na、SiO2在不同藻类中的含量差异较大。在镁含量高的培养基中，钙的需要量往往较低。，而过量钾的存在使生物体能够耐受更高的锥度。钙和镁…除了硅藻外，不需要大量的SiO2。SiO2的掺入对菊石的生长有不利影响。超过4ppm。而对葡萄球菌和葡萄球菌则是在百万分之20左右。硅藻在凝结时受到抑制。是>54ppm。N和P的要求非常一致。所研究的所有藻类在N， 1-7和P， 0.1-2 ppm的培养基中繁殖旺盛。而亏亏当conc。N < 0.2, P < 0.05。都超过了20ppm。这些声音的最佳范围。当使用硝酸盐时，通常比使用NH4盐作为N的来源时宽。
Fourteen planktonic algae have been maintained in pure culture in flourishing condition for > 2 yrs. in media of composition and degree of dilution comparable with natural waters. The requirements of 6 algae (Pedi-astrum boryanum, Staurastrum paradoxum, Botryococcus braunii, Asterionella gracillima, Fragilaria crotonensis, Nitzschia acicularis and N. palea) were investigated in detail. With few exceptions the algae grew equally well in media supplied with nitrate or with NIL. salts. The most favorable concs. of Ca, Mg, K, Na, SiO2 differ considerably for different algae. The Ca requirement is often lower in media with higher Mg cones., while the presence of excessive K renders the organisms tolerant of higher conc. of Ca and Mg.. No appreciable quantity of SiO2 is necessary except for the diatoms. There is an unfavorable effect on the growth of Pediastrum when the SiO2 conc. exceeds 4 ppm. and on Staurastrum and Botryococcus when it is > 20 ppm. Diatoms are inhibited when the conc. is > 54 ppm. The requirements of N and P agree closely. All algae studied flourish in media with N, 1-7 and P, 0.1-2 ppm. and suffer from deficiency when the conc. of N is < 0.2 and that of P < 0.05 and from an inhibiting effect when the conc. of either exceeds 20 ppm. The optimum range of these concs. is often wider when nitrate is used than when an NH4 salt is the source of N.