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[Effect of water stress on content of active constituents in Erigeron breviscaps]
Ya'ni Zhang1, Wenhua Su, Guangfei Zhang
1Institute of Ecology, Kunming 650091, China.
Objective:
To study the effect of water stress on the content of scutellarin and caffeate in Erigeron breviscaps.
Method:
Fv/Fm, N content, as well as the content of scutellarin and caffeate under three water grads were measured.
Result And Conclusion:
Fv/Fm of the plant decreased significantly in 8% and 23% water treatment, that proved drought and waterlogging occurred. Under the two conditions, the contents of N were lower but the contents of active constituents were higher than those under 15% treatment. The results support the carbon-nutrient balance hypothesis and the "stress effect hypothesis" for the formation of geo-herbs.
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