Effects of light quality on microtuber induction of Solanum tuberosum

Chang Hong; Wang Yu-ping; Wang Di; Zhang Feng
August 2009
Yingyong Shengtai Xuebao;Aug2009, Vol. 20 Issue 8, p1891
Academic Journal
With the detoxified test-tube seedlings of two Solanum tuberosum L. varieties as test materials, this paper studied their development and microtuber induction under effects of different light quality (red, blue, and white lights). Under red light, the seedlings leaf net photosynthetic rate, soluble sugar content, and biomass were the highest, and the leaf number was the greatest. Blue light increased the seedlings dry matter content and microtuber number, advanced the date of microtuber initiation, but inhibited seedlings height. Under white light, the seedlings had the lowest net photosynthetic rate and dry matter content. Different S. tuberosum varieties had definite differences in the demand of light quality for their microtuber induction. Applying red light at seedlings development stage and supplying blue light at microtuber induction stage could gain higher productivity.


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