In recent years, natural Pinellia ternata populations of have gradually been exhausted, while the cultivated yield has been limited due to lack of research and uncertain climate condition. Therefore, it is necessary to explore methods of improving yield and quality in P. ternata using brassinolide (BR) treatments and choice of a suitable seed bulb size.• This article reports the effects of BR and two seed bulb sizes (diameter: 0.5-1.0 cm and 1.0-1.5 cm) on active and nutrient components and antioxidant activity in P. ternata. The experiment included six levels of BR (0, 0.05, 0.10, 0.50, 1.00 and 2.00 mg l À1 ).• The tuber yield of the two seed bulb sizes and bulbil yield of small seed bulbs increased 5.67%, 22.66% and 69.23% by day 105 after 0.50 mg l À1 BR treatment, compared with the control. On day 105, only 0.05 mg l À1 BR increased scores in principal components analysis (PCA) in tubers of small seed bulbs by 167.29%, and 0.05 and 0.50 mg l À1 BR increased PCA score in bulbils of large seed bulbs by 145.66% and 252.97%, respectively, compared with the control. Significant BR 9 seed bulb size interactions were found on yield and quality of P. ternata.• The results indicate that BR effects on yield and quality of tubers and bulbils of P. ternata are not only related to BR concentration but also to seed bulb size.
Epitaxial BiFe 0.95 Mn 0.05 O 3 (BFMO) film with room-temperature switching properties is prepared on SrTiO 3 (STO) substrate with a SrRuO 3 (SRO) buffer layer by sol–gel method coupled with rapid thermal annealing (RTA). The remnant polarization and coercive field of SRO/BFMO/SRO capacitor, measured at 455 kV/cm, are 51.8 μC/cm2 and 153.5 kV/cm, respectively. Besides the good fatigue resistance and retention characteristics, the relatively small leakage current density of the capacitor is mainly attributed to the suppression of oxygen vacancies resulting from RTA. Moreover, the SRO/BFMO/SRO capacitor satisfies the Ohmic conduction behavior at fields lower than 90 kV/cm, and the Schottky emission at fields higher than 90 kV/cm.
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