半致死浓度;
The half lethal concentration of 48? h-LC_ ( 50) of 21 nitrobenzenes to Daphnia carinata was determined by use of the standard test method, and the range of toxicity was from 3.49 for nitrobenzene to 5.40 for 1,4-dinitrobenzene.
采用标准实验方法测定了21种硝基苯类化合物对隆线蚤(Daphnia carinata)的48h半致死浓度值,结果lg(1/LC50)的范围在349~540之间;
It is summarized that the seedling's tolerance of half lethal salt concentration, the seed vigour index, and the seed nitrogen content could be regarded as the physiological index for assessing the level of the seed salt tolerance and whether it be selected for breeding.
初步认为种子耐盐半致死浓度、种子活力指数和含氮量可以作为种子耐盐性评价和选育的生理指标。
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