The Influence of Temperature, Daylength and Light Intensity on Flowering in Hydrangea Macrophylla (Thunb.) Ser.

Litlere, B.; Strømme, E.

doi:10.17660/actahortic.1975.51.30

Cited by 23 publications

(14 citation statements)

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“…In order to investigate the potential for yearround production, research on the influence of photoperiod, temperature, light intensity, and chemical growth regulators on floral induction and development has been conducted (Bailey and Weiler, 1984;Bailey et al, 1986;Litlere and Strømme, 1975;Vidalie, 1986). Temperature and photoperiod have a pronounced effect on floral induction and development.…”

Section: Methodsmentioning

confidence: 99%

Remontant Flowering Potential of Ten Hydrangea macrophylla (Thunb.) Ser. Cultivars

Adkins¹,

Dirr²

2003

HortSci

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Floral induction of 10 Hydrangea macrophylla (Thunb.) Ser. cultivars (`All Summer Beauty', `Dooley', `Endless Summer', `Générale Vicomtesse de Vibraye', `Lilacina', `Mariesii Variegata', `Mme. Emile Mouillère', `Nikko Blue', `Penny Mac', and `Veitchii') was evaluated to determine the remontant flowering potential. Cultivars exhibiting superior flowering potential could facilitate year-round production of florist s hydrangea and expand the geographic adaptation of hydrangeas in the landscape. Plants were tested under either 8-hour inductive short-day (SD) or 24-hour noninductive extended-day (ED) photoperiods at 24 ± 2 °C. Floral induction of H. macrophylla occurred under both SD and ED but was more rapid under SD than under ED. Shoot length and total number of nodes were significantly different for cultivars, photoperiods, and harvest dates. Significant differences in the floral initiation and development were observed among cultivars. `Penny Mac', `Endless Summer', `Lilacina', `Mme. Emile Mouillère', and `Nikko Blue' displayed significantly greater floral meristem development under SD than all other cultivars. Over the nine-week period, only `Dooley', `Endless Summer', and `Penny Mac' floral development was affected significantly greater by SD photoperiods than ED photoperiods. All others cultivars showed similar floral development under SD and ED. Stage of meristem development was highly correlated with number of nodes, but not with shoot length.

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Section: Methodsmentioning

confidence: 99%

Remontant Flowering Potential of Ten Hydrangea macrophylla (Thunb.) Ser. Cultivars

Adkins¹,

Dirr²

2003

HortSci

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“…Decreases in temperature and day length in autumn trigger seasonable floral induction in hydrangeas (Struckmeyer, 1950). In particular, temperatures of around 18°C cause floral induction regardless of the photoperiod, while a photoperiod of up to 12 h causes floral induction when the temperature is above 22°C (Bailey and Weiler, 1984;Litlere and Strømme, 1975). Adkins and Dirr (2003) reported that the remontant cultivars they selected could produce flower buds even under a 24 h photoperiod at 24°C.…”

Section: Discussionmentioning

confidence: 99%

Selection of Hydrangea (<i>Hydrangea</i> spp.) Cultivars with High Potential for Unseasonable Flower Bud Production in Japan

et al. 2018

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Hydrangea (Hydrangea spp.) flower buds usually differentiate from the end of summer through autumn, but some cultivars can also produce flower buds in spring. In the present study, we selected cultivars with high potential for such unseasonable flower bud production in Japan by evaluating the flower bud production on pinch-treatment-induced axillary shoots. We also examined the pinching time and the difference between the two shoot types: previously formed shoots that developed from buds formed in the previous autumn and basal shoots that formed in the current spring. We found that 'Christmas', 'Endless Summer', and 'Rosea' had the highest frequencies of unseasonable flower bud production on the axillary shoots of previously formed shoots (90.0%, 80.0%, and 90.0%, respectively) and basal shoots (90.0% for all three cultivars). When the buds were pinched in mid-April, the axillary shoots that formed on both shoot types flowered from early July to midAugust, which was approximately 1 month later than for seasonably produced flower buds in the same cultivars. In 2011, 98.0%, 90.5%, and 84.0% of the axillary shoots that developed on previously formed shoots flowered in 'Christmas', 'Endless Summer', and 'Rosea', respectively, while in 2012, 63.2%, 54.9%, and 75.3% flowered, respectively. Similar values were seen for the basal shoots, with the exception of 'Christmas' in 2011 and 'Endless Summer' in 2012, which both had lower flowering rates than previously formed shoots. In 'Rosea', flower bud differentiation started just after the pinch treatment, and the frequency of flower bud production decreased when the pinch treatment was conducted after late April. Thus, 'Christmas', 'Endless Summer', and 'Rosea' were considered to have high potential for unseasonable flowering following pinch treatment in early spring. However, unseasonable flower bud production may often be suppressed in pinched basal shoots.

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“…Pot plants producers rely on naturally occurring photoperiod in the summer and fall for vegetative growth and floral induction (Struckmeyer, 1950). In order to investigate the potential for production, research on the influence of photoperiod, temperature, light intensity, and chemical growth regulators on floral induction and development has been conducted (Bailey and Weiler, 1984;Bailey et al, 1986;Litlere and Strømme, 1975;Vidalie, 1986). Litlere and Strømme (1975) reported that a photoperiod between 8 to 12-hours are inductive whereas photoperiods more than 16 hours are noninductive.…”

Section: Introductionmentioning

confidence: 99%

Effect of Photoperiod on the Flowering of Some Cultivars of Hydrangea (<i>Hydrangea macrophylla</i>)

Eid¹,

Albatal²,

Haddad³

2016

ijh

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The experiment was conducted in Hama governorate (Bammraa village) in Syria during the spring and summer seasons 2013-2014 to study the effect of photoperiod on some production indicators (Date of flowering, Number of flower clusters, Number of flowers, Diameter of flower cluster and length stem). Floral induction of three Hydrangea macrophylla. Ser cultivars ("Mme. Emile Mouillè re", "Nikko Blue", "Pia" was evaluated to determine the flowering. Plants were tested under either natural day length (ND) or 24-hours-extended day (ED) or 8-hours short day (SD). Floral induction of H. macrophylla occurred under all treatments but was more rapid under ED. Number of flower clusters, flower numbers and diameter of flower cluster were significantly different for cultivars and photoperiods. Floral initiation and development were observed among photoperiods. Results indicated that ED was the best in all production indicators (Number of flower clusters, Number of flowers, Diameter of flower cluster and length stem) in the cultivars with significant differences. In addition, the results showed that the cultivar (Nikko blue) was more responsive in all production indicators but, the amount of anthocyanin was more in deep pink sepals than blue sepals.

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The Influence of Temperature, Daylength and Light Intensity on Flowering in Hydrangea Macrophylla (Thunb.) Ser.

Cited by 23 publications

References 0 publications

Remontant Flowering Potential of Ten Hydrangea macrophylla (Thunb.) Ser. Cultivars

Remontant Flowering Potential of Ten Hydrangea macrophylla (Thunb.) Ser. Cultivars

Selection of Hydrangea (<i>Hydrangea</i> spp.) Cultivars with High Potential for Unseasonable Flower Bud Production in Japan

Effect of Photoperiod on the Flowering of Some Cultivars of Hydrangea (<i>Hydrangea macrophylla</i>)

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