A new evaluation and control method on semiconductor risk production manufacturing period

Liu, Ziqian Javaer; Qian, Hongtao H T

doi:10.1109/cstic.2016.7464072

Cited by 1 publication

(2 citation statements)

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“…The fresh weight and dry weight of lettuce increased significantly after continuous light before harvest. This is according with the former research results [ 3 , 38 , 39 ], which may be because the increase of photosynthetic duration to improve the net photosynthetic efficiency of lettuce leaves and promote the accumulation of photosynthetic products, thus significantly improving the yield of lettuce [ 9 ]. The fresh weight of lettuce was significantly increased after continuous light treatment with different light quality.…”

Section: Discussionsupporting

confidence: 70%

“…Zha et al [ 35 ] found that continuous light with high ratio of red to blue light quality could promote the growth of lettuce, which was consistent with the results of this experiment. It is because red light is the most absorbed light by green plants [ 39 ]. Red light plays a role in regulating light morphogenesis through phytochrome, which can promote stem elongation, promote carbohydrate synthesis, make plants grow faster and increase plant yield [ 40 ].…”

Section: Discussionmentioning

confidence: 99%

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LED Light Quality of Continuous Light before Harvest Affects Growth and AsA Metabolism of Hydroponic Lettuce Grown under Increasing Doses of Nitrogen

Zhang

Zha

Liu

et al. 2021

Plants

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To study the effects of light quality of continuous light before harvest on the growth and ascorbic acid (AsA) metabolism of lettuce (Lactuca sativa L.) grown under relative high nitrogen level, lettuce plants grown under different nitrogen levels (8, 10 and 12 mmol·L−1) were subjected to continuous light with different red: blue light ratios (2R:1B and 4R:1B) before harvest. The results showed that the shoot fresh weight of lettuce under 12 mmol·L−1 nitrogen level was significantly higher than that under other treatments. There were no significant differences in shoot dry weight, root fresh weight, root dry weight, soluble sugar content, nitrate content and AsA content in leaves among the treatments at different nitrogen levels. The content of AsA in leaves was significantly higher than that in petioles before and after continuous light. Under the same nitrogen level, the fresh weight of lettuce under continuous light quality 4R:1B was significantly higher than that under other treatments. The content of AsA in lettuce leaves increased in different degrees after continuous light before harvest. High yield and AsA content could be obtained by 72 h continuous light with red and blue light 4R:1B at 12 mmol·L−1 nitrogen level. After continuous light, the content of AsA increased significantly due to the increase of the ratio of red light and nitrogen level, which increased the activities of L-galactono-1,4-lactone dehydrogenase (GalLDH) and dehydroascorbic acid reductase (DHAR) involved in AsA synthesis and in the recycling of DHAR to AsA respectively.

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Section: Discussionsupporting

confidence: 70%