Relationship between the Inflorescence Structure and Setting of Decorative Flowers on Lacecap Cultivars of Hydrangea macrophylla (Thunb.) Ser. and H. serrata (Thunb.) Ser.

Uemachi, Tatsuya; Nishio, Toshihiko

doi:10.2503/hrj.4.435

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…The inflorescence of hydrangea is classified into two types: hortensia and lacecap. In hortensia, the decorative florets constitute most of the inflorescence, and in lacecap, decorative florets are situated around the periphery of the inflorescence (Uemachi and Nishio, 2005;Uemachi et al, 2006). In Japan, consumption of cut hydrangea flowers has been increasing in recent years, and the market requires stable production of high-quality cut flowers.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of Transpiration from the Inflorescence Extends the Vase Life of Cut Hydrangea Flowers

Kitamura

Ueno

2015

Hortic J

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The relationship between transpiration from the inflorescence and the vase life of cut hydrangea 'Endless Summer' flowers was studied. In the defoliated cut flowers, the vase life increased with a decreasing number of decorative florets. Cut flowers having small inflorescences with 189 decorative florets exhibited a lower level of transpiration (7 g·day , and approximately 6% of the stomata were observed to be open microscopically. In addition, diurnal change of transpiration from a defoliated cut flower was not observed. These observations indicate that most of the transpiration from the sepals is through cuticular transpiration. The use of defoliated cut flowers that do not bear too many decorative florets and treatments that suppress transpiration from the surface of the decorative sepals would be effective for the vase life extension of cut hydrangea flowers.

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Section: Introductionmentioning

confidence: 99%

Inhibition of Transpiration from the Inflorescence Extends the Vase Life of Cut Hydrangea Flowers

Kitamura

Ueno

2015

Hortic J

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“…Hydrangeas produce two types of florets, decorative and non-decorative florets. The arrangement of two distinct floret types in an inflorescence decides the inflorescence type, hortensia or lacecap (Uemachi and Nishio, 2005;Uemachi et al, 2006). Many hybrid cultivars among H. macrophylla and H. serrata with hortensia type inflorescences have been bred and used for cut hydrangea flower production.…”

Section: Introductionmentioning

confidence: 99%

Relation Between Floral Initiations on Apical Buds of Basal Shoots After the Autumn and Cultivar Differences in Unseasonal Flowering of Hydrangea

2020

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Typically, hydrangea (Hydrangea spp.) plants produce flowers from early to midsummer. However, their basal shoots often continue to produce flowers from late summer to autumn, and we call this unseasonal flowering. The flowering frequencies and flowering period durations of basal shoots were studied using 23 hydrangea cultivars and lines in 2017, 2018, and 2019. The flowering frequencies of basal shoots were relatively high in 'Christmas', 'Endless Summer', 'Ezo', 'Rosea', and 'Sumida-no-hanabi' in each year of the study. The flowering period durations of basal shoots ranged from one to six months among the cultivars and lines studied. Basal shoots of 'Endless Summer' and 'Rosea' continuously flowered during each year of the study period. The basal shoots of 'Hatsushimo', 'Jyogasaki', 'Maihime', 'Masja', 'Ms. Hepburn', 'Uzu', and No. 5 never flowered after August in any of the study years. Using 'Masja' and 'Rosea', axillary buds expected to develop into basal shoots were studied for flower bud initiation in November 2018. Flower bud initiation was observed in 8.9% and 77.4% of axillary buds of 'Masja' and 'Rosea', respectively. The number of nodes produced before flower bud initiation in the buds ranged from 10 to 12 and 8 to 13 in 'Masja' and 'Rosea', respectively. The numbers of nodes corresponded to those of the basal shoots that flowered up to August 2019 in both cultivars. The number of nodes produced by basal shoots of 'Rosea' that flowered after August 2019 ranged from 14 to 19, which was higher than those observed for the axillary buds expected to develop into basal shoots in November 2018. In conclusion, the flowering period duration of hydrangea basal shoots differs among cultivars. The floral initiations on the apical buds of the basal shoots after the previous autumn largely contribute to unseasonal flowering occurrences after August in hydrangea.

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“…저장 기간 및 온도에 따른 절화 수국 품질 분석 소재이다 (Kitamura and Ueno, 2015;. 수국은 꽃차례의 특성에 따라 Mophead(Hortensia)와 Lacecap 형태 로 나뉘는데 (Lee, 2016), 절화용으로 많이 사용되고 있는 Hydrangea macrophylla는 두 가지 형태 모두 속해 있다 (Uemachi and Nishio, 2005;Uemachi et al, 2006;Kitamura and Ueno, 2015). 수국은 크고 화려한 형태의 꽃받침을 관상하며 (JARES, 2015;Uemachi et al, 2004), 꽃받침의 색상에 따라 흰색, 분홍색, 청색 등 화색으로 분류한다.…”

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Change in Quality of Cut Hydrangea Flowers as Affected by Storage Period and Temperature

Lee¹,

Oh²,

Lee³

et al. 2019

HST

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Relationship between the Inflorescence Structure and Setting of Decorative Flowers on Lacecap Cultivars of Hydrangea macrophylla (Thunb.) Ser. and H. serrata (Thunb.) Ser.

Cited by 11 publications

References 2 publications

Inhibition of Transpiration from the Inflorescence Extends the Vase Life of Cut Hydrangea Flowers

Inhibition of Transpiration from the Inflorescence Extends the Vase Life of Cut Hydrangea Flowers

Relation Between Floral Initiations on Apical Buds of Basal Shoots After the Autumn and Cultivar Differences in Unseasonal Flowering of Hydrangea

Change in Quality of Cut Hydrangea Flowers as Affected by Storage Period and Temperature

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