Article ; Online: Effects of Different LED Light Qualities on Plant Growth and Flower Traits of Chrysanthemum Ping Pong
Guangdong nongye kexue, Vol 49, Iss 12, Pp 44-
2022 Volume 54
Abstract: Objective】Due to the instability of flower color and some other growth traits of chrysanthemums growing in high temperature environment in South China, effective LED light combinations were investigated to regulate the growth and flower color of ... ...
| Abstract | 【Objective】Due to the instability of flower color and some other growth traits of chrysanthemums growing in high temperature environment in South China, effective LED light combinations were investigated to regulate the growth and flower color of chrysanthemums in order to provide theoretical references of LED light cultivation technology for the production of chrysanthemums.【Method】Different LED light combination treatments of RBFR (the photosynthetic photon flux density PPFD ratio of red ∶ blue ∶ far-red light ≈ 10 ∶ 7 ∶ 2.5), RBUV (red ∶ blue ∶ ultraviolet light ≈ 10 ∶ 6 ∶ 0.5) and WB (white ∶ blue ≈ 10 ∶ 4.8) were performed on 35-day-old potted seedlings of commercially popular chrysanthemum cultivars of 'Pink Ping Pong'and Purple Ping Pong, the LED white light treatment was used as the CK group, the total light intensity of each group was set to be about 240 μmol·m-2s-1, and all treatments lasted for 80 days. The changes of growth trait indicators of the chrysanthemums growing from seedling to mature flowering were observed and photographed.【Result】(1) Compared with CK group, the plant heights of 80-day-treatment Pink Ping Pong and 70-day-treatment Purple Ping Pong under RBFR treatment increased by 18.3% and 27.3% respectively, the stem thicknesses increased by 14.1% and 38.1% respectively, the petiole lengths increased by 0.4% and 34.8% respectively; and the mean values of leaf length, leaf width, leaf fresh weight and leaf dry weight of the 70-day-treatment Purple Ping Pong under RBFR treatment were 18.6%, 5.8%, 25.6% and 45.5% higher than those of CK group, respectively; values of the above growth trait indicators were the highest among all treatment groups. (2) In terms of flowering trait indicators of the 70-day-treatment Ping Pong, mean values of peduncle length, peduncle diameter, petal length and petal width of the top capitulum and diameter of side capitulum of 'Pink Ping Pong'under WB treatment were the highest among all treatment groups, which were 4.5%, 2.3%, 10.9%, 17.3%, and 19.1% higher than ... |
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| Keywords | chrysanthemum 'ping pong' ; led light combination ; far-red to red-blue light ; plant growth ; white blue light ; flower color ; flower quality ; Agriculture ; S |
| Subject code | 580 |
| Language | English |
| Publishing date | 2022-12-01T00:00:00Z |
| Publisher | Guangdong Academy of Agricultural Sciences |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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