Effect of different fertilizing levels on yields and efficiency components of Pinellia ternata from Sichuan / 中国中药杂志

<p><b>OBJECTIVE</b>The effect of the different fertilizing levels on yields and main active components of Pinellia ternata from Sichuan was studied under the cultivated condition, in order to provide theoretical basis for the standardized cultivation.</p><p><b>METHOD</b>Using one of the wild populations of P. ternate from Sichuan as tested material, the experiment was performed with orthogonal designing methods L25 (5(3)). During growth and development period, agronomic traits such as number of sprouting, inflorescence and bulblets were counted. After harvesting, main chemical compositions, growth and proliferation rates were determined.</p><p><b>RESULT</b>In different fertilizing levels, the P. ternata from Sichuan showed the same growth rhythm, though there were significant difference (P < 0.05) among the average emergence rate,whereas extremely significant difference (P < 0.01) were detected among the average ratio of bolting, the average bulbils, individual growth rate, individual proliferation rate, beta-sitosterol and alkaloid content under different fertilizing levels. Nitrogenous fertilizer that affected the content of alkaloids and beta-sitosterol were extremely significant (P < 0.01), whereas phosphate and potassium fertilizer had no significant effect. The effect of fertilizer factor and inter effects on beta-sitosterol showed no significant effect, but have influence on other indexes.</p><p><b>CONCLUSION</b>The optimum fertilizer composition was 315 kg x hm(-2) of nitrogen, 225 kg x hm(-2) of P2O5 and 270 kg x hm(-2) of K2O.</p>

Effects of different storage methods on germination and physiological indexes of seed-stem of Pinellia ternata from Sichuan / 中国中药杂志

<p><b>OBJECTIVE</b>To study the optimum storage methods of Pinellia ternata from Sichuan.</p><p><b>METHOD</b>Nine methods were used to overwintering storage of the seed-stem of P. ternata from Sichuan. The germination of seed-stem was observed through the following year after planting, then the germination percentage, vigor of germination and germination index were calculated. At the seedling stage, the physiological indexes like rooting number, root length, root activity, chlorophyll content and catalase activity etc. were determined.</p><p><b>RESULT</b>Under the different storage conditions, all the tested indexes of P. ternata from Sichuan were significantly different between each other (P < 0.05), except the chlorophyll content.</p><p><b>CONCLUSION</b>The seed-stem of P. ternata from Sichuan should be preserved in the wet sand (or in soil) in a greenhouse or 4 degrees C refrigerator. Under these conditions, the germinating vigor and growth activity of seed-stem performed the best.</p>