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. 2015 Jan 14;29(2):299–308. doi: 10.1080/13102818.2014.1000210

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© 2015 The Author(s). Published by Taylor & Francis.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Plant formation from embryogenic callus of P. vietnamensis under different lighting conditions after 12 weeks of culture. a₁, a₂: fluorescent lamp, 3U compact fluorescent lamp, white LED, darkness, green LED, yellow LED (from left to right); b₁, b₂: blue LED, red LED combined with blue LED at the ratios of 10:90, 20:80, 30:70, 40:60 and 50:50 (from left to right); c₁, c₂: red LED, red LED combined with blue LED at the ratios of 90:10, 80:20, 70:30, 60:40 and 50:50 (from left to right).