Varietal Differences in Flowering and Plant Growth Under Night-Break Treatment with LEDs in 12 Chrysanthemum Cultivars

Ochiai, Masaki; Liao, Yi‐Chu; Shimazu, Tadahiro; Takai, Yusuke; Suzuki, Kenta; Yano, Shinobu; Fukui, Hirokazu

doi:10.2525/ecb.53.17

Cited by 13 publications

(8 citation statements)

References 20 publications

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“…Similar results were reported by Korkut (1990), Hanke (1996) and Kaur (2014) in chrysanthemum plants. Ochiai et al (2015) reported that night break treatments at 630-, 660-, and a combination of 660-and 735-nm LEDs inhibited floral differentiation in all cultivars, but combination of 660-and 735-nm LEDs had the most stabile inhibitory effect on floral differentiation among chrysanthemum cultivars. The similar effect has been reported for Chrysanthemum cv.…”

Section: Resultsmentioning

confidence: 98%

“…The flowering could even be promoted by subjecting the plants to dark periods of more than 12 hr or inhibited by the interruption of long-night called as night break with a short exposure to red light with continuous or intermittent low intensity light (cyclic light) using fluorescent or incandescent lamp (Cathey and Borthwick, 1964). Ochiai et al (2015) reported that night-break (NB) treatment inhibited flowering in short-day plants and was widely used in the flower production of cut chrysanthemum (Chrysanthemum morifolium Ramat.). The flow-ments was better than the control (24.71 cm), but was at par among them.…”

Section: Methodsmentioning

confidence: 99%

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Effect of duration of night interruption on growth and flowering of Chrysanthemum cv. Kikiobiory

Thakur

Grewal

2016

JANS

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The study was conducted to determine the effect of duration of night interruption using incandescent bulbs on sustained quality flower production of potted standard Chrysanthemum cv. Kikiobiory. The different night interruption (NI) treatments i.e. control, <5 sec. flash, 30-, 60-, 90- and 120- min. significantly (p<0.05) affected allthe vegetative and floral parameters. The plant height, number of leaves and root suckers per plant increased with the increase duration of NI treatments with maximum at 120- min. NI (90.42 cm, 34.75 and 12.10, respectively). The days taken to flower bud appearance, colour break stage and full bloom were delayed, whereas flower quality with respect to duration of flowering and flower diameter were deteriorated with increase in duration of NI treatments. The days taken to flower bud appearance, colour break stage and full bloom were highest at 120- min. NI (136.84, 183.22 and 202.25 days, respectively) which delayed the flowering by 63.94 days, where full bloom flower appeared in March. There was reduction in duration of flowering and flower diameter with increased NI duration with lowest at 120 min. NI (7.83 days and 15.69 cm). It was observed that increase (120 min.) in night interruption increased the vegetative growth and delayed the flowering; however, flower quality was deteriorated. Thus, it was concluded that 60 min. NI improved flower quality with sustained flower production in potted Chrysanthemum cv. Kikiobiory.

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Section: Resultsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Effect of duration of night interruption on growth and flowering of Chrysanthemum cv. Kikiobiory

Thakur

Grewal

2016

JANS

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“…The clones were considered had taller plants that were more favorable for cut flower (Ochiai et al, 2015). In spray type, the clones no 2015-8, 2015-11 and 2015-14 had the bigger flowers and floret size that were preferable, yet had shorter plants compared to the rest tested spray type clones.…”

Section: Plant Performances Under Highland Conditionmentioning

confidence: 99%

The Evaluation of Chrysanthemum Clones Under Low Elevation

Sanjaya¹,

Marwoto²,

Budiarto³

et al. 2018

Agrivita.J.Agr.Sci

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Cultivation of chrysanthemum at low elevation was one effort to expand potential production areas. Under these circumstances, several environmental conditions might not be as conducive as in highland and deviate the plant from the original characters and potential yield. Fifteen promising variants derived from an unconventional breeding program were evaluated at two different elevations; 1100 and 250 m above sea level (asl) at Cianjur-West Java, Indonesia during hot season from April to September 2016. The experiment was designed as progenital selection to seek the adaptive genotypes on the targeted sites. The results showed that varietal differences existed among the tested clones when grown under highland and lowland. At lowland (250 m asl), all clones showed growth retardation expressed by the reduction of flower qualities with different degrees among genotypes. In standard group, only 2015-9 and 2015-15 that produced unchanged flower color, with acceptable plant height standard for cut flower. While in spray type, all tested clones produced flower with degraded floret color.

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“…Night interruption (NI) during short-day (SD) seasons effectively accelerated the flowering of long-day (LD) plants that allowed for an earlier marketing or seed production and, under naturally LD conditions, delayed the flowering of SD plants (Hamamoto et al 2005;Oh et al 2013). Recent studies reported that even low-intensity NI was effective in controlling the flowering of certain plants (Kim et al 2011;Ochiai et al 2015;Park et al 2015). According to the literature, Cymbidium aloifolium L. photosynthesized during a low-intensity, 4-h NI with 3-5 μmol m −2 s −1 photosynthetic photon flux density (PPFD), an intensity slightly higher than that of moonlight, suggesting that the increased growth and accelerated flowering with NI are attributed to the increased net photosynthesis (Kim et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Both the Quality and Positioning of the Night Interruption Light are Important for Flowering and Plant Extension Growth

Park

Jeong

2019

J Plant Growth Regul

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Chrysanthemum (Dendranthema grandiflorum Kitamura), a qualitative short-day plant, does not produce flowers when the night length is shorter than a cultivar-dependent critical value. Flowering is effectively inhibited when the required uninterrupted night period is broken by short periods of exposure to night interruption lights (NILs). The effects of the quality and positioning of the NIL on the morphogenesis, flowering, and photoperiodic gene expressions of chrysanthemum were investigated. Blue (NI-B), red (NI-R), far-red (NI-Fr), and white (NI-W) light-emitting diodes (LEDs) at an intensity of 10 μmol m −2 s −1 photosynthetic photon flux density (PPFD) were used to interrupt the dark period or plants grown in a closed walk-in growth chamber at night for a total of 4 h. The NILs were positioned to illuminate either the shoot tip, youngest mature leaf (vigorously growing third leaf from the shoot tip), or old leaf (third leaf from the stem base). The NI-R on the shoot tip and all NI-Fr treatments increased the plant extension growth, to a similar height observed in plants in long-day (LD) treatments. Extension growth was generally suppressed for plants in the NIB , and plant height was the smallest when NIB was shed onto the old leaf. Plants in all NIL treatments except NI-Fr showed a negative correlation between the plant height and the age of the leaf (or tissue) exposed to the NIL. Flowering was observed for plants in all treatments except for NI-R shed onto the shoot tip. The transcriptional factor PHYA was slightly expressed in plants which showed a flowering response. However, the CRY1, PHYB, and TFL was not expressed to levels reported previously, and the reason for low expression of these genes in these plants may be due to a combined effect of these genes with other flowering promoting and/or inhibiting genes. These results suggest that both the NIL quality and the age of the leaf (or tissue) exposed to the NIL affect the morphogenesis, flowering, and expression of transcriptional factors. Moreover, the previously known effects of the NIL quality on the morphogenesis as well as the vegetative to reproductive phase transition of plants were the most pronounced when the NIL irradiated the shoot tip, and the least pronounced when the NIL was shed onto the old leaf. Therefore, it seems that not only the appropriate quality, but also the appropriate positioning of the NIL, is important for optimizing flowering and plant extension growth.

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Varietal Differences in Flowering and Plant Growth Under Night-Break Treatment with LEDs in 12 Chrysanthemum Cultivars

Cited by 13 publications

References 20 publications

Effect of duration of night interruption on growth and flowering of Chrysanthemum cv. Kikiobiory

Effect of duration of night interruption on growth and flowering of Chrysanthemum cv. Kikiobiory

The Evaluation of Chrysanthemum Clones Under Low Elevation

Both the Quality and Positioning of the Night Interruption Light are Important for Flowering and Plant Extension Growth

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