Subjects: Biology >> Botany >> Applied botany submitted time 2023-10-22 Cooperative journals: 《广西植物》
Abstract： In order to improve the leaf color and optimize the facility of cultivation system of Aglaonema commutatum, its hydroponic seedlings were used as the test material in this study, six light qualities (white light, R∶B = 1∶1, R∶B = 1∶2, R∶B = 2∶1, R∶B = 1∶3, R∶B = 3∶1, in which R and B represent red light and blue light respectively) and two photoperiods (8 h‧d-1, 12 h‧d-1) were cross cultured to determine the morphological indexes, biomass, SPAD value, anthocyanin content and leaf color parameters and to investigate its response to red and blue light quality and photoperiodic interactions（hue value a*, hue value b*, luminosity L* and hue angle h*）. The results were as follows: (1) The dry weight and fresh weight of A. commutatum seedlings treated with LP11 (R∶B=1∶3×12 h‧d-1) were the highest, which was most conducive to plant growth and biomass accumulation followed by LP5 (R∶B=1∶3×8 h‧d-1) treatment. (2) At the end of the experiment, under the same light quality conditions, the SPAD value of 8 h‧d-1 photoperiod was higher than that of 12 h‧d-1 photoperiod, the anthocyanin content of 12 h‧d-1 photoperiod was higher than that of 8 h‧d-1 photoperiod, the SPAD value of LP11treatment was the lowest and the anthocyanin content was the highest. The leaf color parameters a* and b* of A. commutatum cultured in 12 h‧d-1 photoperiod were higher than those in 8 h‧d-1 photoperiod, and the value of h* was lower than that in 8 h‧d-1 photoperiod. (3) The comprehensive evaluation of the membership function showed that the LP11 treatment was the most effective in promoting the growth and leaf color improvement of A. commutatum. In a word, 12 h‧d-1 photoperiod is more conducive to the growth and leaf color change of A. commutatum, and LP11treatment is the best combination of light quality and photoperiod.
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