Objective: To investigate the effect of plant growthsubstances on induction and culture of callus from Rhodiola quadrifida and also to analyze salidroside contents in the callus.
目的：考察植物生长物质对四裂红景天愈伤组织诱导和培养的影响并分析愈伤组织中红景天苷含量。
2
The light or the absence of inhibitory effect of other plant exogenous growthsubstances to Botritis cinerea was the main factor that they didn't control tomato gray mould disease steadily.
其他外源植物生长物质对灰霉病菌抑菌活性差或没有抑菌活性因而对番茄灰霉病的控制作用不稳定。
3
These noxious substances limit caterpillars' growth and reduce the number of eggs that female moths lay.