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Potato Tuber Growth and Yield Under Red and Blue LEDs in Plant Factories
Journal of Plant Growth Regulation ( IF 4.8 ) Pub Date : 2021-01-02 , DOI: 10.1007/s00344-020-10277-z
Wei He , Min Pu , Jin Li , Zhi-Gang Xu , Lijun Gan

To investigate the effects of red and blue light on potato growth and yield, potato plantlets were transplanted under white (W), red (R), blue (B), and red + blue (RB; 50%R + 50%B) light in growth chambers. Plants under W had a significantly lower tuber yield per plant than the other treatments, although their shoot dry weights were the highest among all treatments. Potato plants under R had the highest tuber yield per plant among all treatments. The distribution of tuber yield under R showed a lower ratio of 2–20 g tubers and a higher ratio of > 20 g tubers, compared to tubers under W. Plants under R had greater leaf dry weight and slowly decreasing total leaf area compared to other treatments in the late stage of potato growth, thereby extending active tuber bulking under R. Although plants under B and RB did not significantly differ in tuber yield per plant, tuber bulking under B and RB occurred in different ways. Plants under RB advanced tuberization in the seedling stage, while tubers under B rapidly accumulated biomass in the medium stage. Plants under B had higher sucrose transport from leaves to sinks and stronger tuberization signals in tubers than those under W. Tubers under B had significantly increased levels of ADP-glucose pyrophosphorylase and sucrose synthase to promote starch biosynthesis, compared to tubers under W. Overall, red light increased tuber biomass accumulation, while blue light rapidly promoted tuber bulking.



中文翻译:

植物工厂中红色和蓝色LED下马铃薯块茎的生长和产量

为了研究红色和蓝色光对马铃薯生长和产量的影响,将马铃薯苗移植到白色(W),红色(R),蓝色(B)和红色+蓝色(RB; 50%R + 50%B)下生长室内的光线。W处理下的植物每株块茎产量明显低于其他处理,尽管其茎干重在所有处理中最高。在所有处理中,R下的马铃薯植株单株块茎产量最高。与W下的块茎相比,R下的块茎产量分布显示出较低的2-20 g块茎比率和较高的> 20 g块茎比率。与其他条件下相比,R下的植物具有更大的叶干重和缓慢减少的总叶面积马铃薯生长后期的处理,从而扩大了在R下的有效块茎膨大。尽管B和RB种植的单株块茎产量无显着差异,但B和RB种植的块茎膨大以不同的方式发生。RB下的植物在苗期进行块茎化,而B下的块茎在中期阶段迅速积累生物量。与W下的块茎相比,B下的块茎中的蔗糖从叶到汇的转运更高,块茎中的块茎信号更强.B下的块茎的ADP-葡萄糖焦磷酸化酶和蔗糖合酶水平显着增加,以促进淀粉的生物合成。红光增加了块茎生物量的积累,而蓝光则迅速促进了块茎的膨大。而B之下的块茎则在中期迅速积累了生物量。与W下的块茎相比,B下的块茎中的蔗糖从叶到汇的转运更高,块茎中的块茎信号更强.B下的块茎的ADP-葡萄糖焦磷酸化酶和蔗糖合酶水平显着增加,以促进淀粉的生物合成。红光增加了块茎生物量的积累,而蓝光则迅速促进了块茎的膨大。而B之下的块茎则在中期迅速积累了生物量。与W下的块茎相比,B下的块茎中的蔗糖从叶到汇的转运更高,块茎中的块茎信号更强.B下的块茎的ADP-葡萄糖焦磷酸化酶和蔗糖合酶水平显着增加,以促进淀粉的生物合成。红光增加了块茎生物量的积累,而蓝光则迅速促进了块茎的膨大。

更新日期:2021-01-02
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