[Effects of salicylic acid on growth of Pinellia ternata].
OBJECTIVE
To study the effects of salicylic acid of different concentration (SA) on the growth of Pinellia ternate.


METHODS
SA of different concentration was sprayed to the plant as it grew about 15 cm high. Plant height, total chlorophyll content, activity of SOD, MAD content, photosynthesis speed, intercellular CO2 concentration, the transpiration speed and the leaf temperature were measured after 3 times spray.


RESULTS
When 0.5 mmol x L(-1) SA was sprayed, the intercellular CO2 concentration, activity of SOD and photosynthesis speed were increased, while leaf temperature and MDA content were decreased.


CONCLUSIONS
SA at the concentration of 0.5 mmol x L (-1) was suitable for the growth of P. ternate. It obviously decreased sprout tumble and increased the fresh weight of tuber and the alkaloid content.
Xue
Jian-ping
JP
Department of Biology, Huaibei Coal Industry Teachers' College, Huaibei 235000, China. xuejp2000@yahoo.com.cn
Zhang
Ai-min
AM
Fang
Zhong-ming
ZM
Sheng
Wei
W
D002245:Carbon Dioxide / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism; D010788:Photosynthesis / Q000187:drug effects; D030021:Pinellia / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D010937:Plant Growth Regulators / Q000494:pharmacology*; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism / Q000502:physiology; D035281:Plant Tubers / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D010946:Plants, Medicinal / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D020156:Salicylic Acid / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism