Effects of Chemicals, Decoating and Low Temperature Treatments on Seed Germination in Lycoris aurea
The influences of testa-removal of seed, partial cutting of embryo, xylene treatment, growth regulator, chemical treatment and low temperature treatment on the seed germination of Lycoris aurea were investigated. The germination rate of the testa-removed seeds was higher than that of the whole seeds, and the seeds treated by testa-removal+xylene was 63% of germination. was more effective than kinetin treatment, and seeds treated with 200ppm showed 60% of germination. was more effective than KOH treatment, and seeds treated with 0. 1% was 76% of germination. The seeds, stored for two months at , showed the highest germination rate with 93%
Abstract We study the structure and surface morphology of the 100 nm homoepitaxial LaAlO 3 films grown by pulsed laser deposition in a broad range of growth parameters. We show that there is a narrow window of growth conditions in which the stoichiometric, bulk-like structure is obtained while maintaining a 2-dimensional (2D) layer-by-layer growth mode. In our system, these optimum growth conditions are 100 mTorr background pressure with laser energy density 1.5–2 J/cm 2 . The sensitivity to growth conditions of the stoichiometry and structure of LaAlO 3 films can have a crucial role in the 2-D electron gas formed at the LaAlO 3 /SrTiO 3 interface.