Breeding of Spray Rose Cultivar ‘Pink Shine’ with Pink Color and Longer Vase Life

Yang, Gyeong Rok; Kim, Wonhee; Kim, Se Jin; Jung, Hyeon Hwan; Yoo, Bong Sik; Lee, Hae Jin; Park, Ki Young

doi:10.11623/frj.2020.28.3.15

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…Recently, cut rose varieties have been bred in Korea [26][27][28]. However, newly bred rose varieties do not adapt well to negative environments, such as high and low temperatures and low light intensity.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Four-Seasonal Quality and Yield of Cut Flower Roses Grafted onto Rosa Rootstocks

et al. 2022

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Cut roses are ornamental crops that are produced year-round, and the quality and yield of these cut flowers vary depending on the temperature and light intensity of the four seasons. Grafting improves productivity by increasing adaptability to negative environments, such as high temperature and low light intensity. The effectiveness of grafting depends on the type of the scion and rootstock. In order to confirm the effectiveness of stenting on roses, two varieties of cut roses (Rosa hybrida cv. Pink Beauty and Pink Shine) were grafted onto three rootstocks (R. multiflora Natal Briar, R. indica Major, and Rosa multiflora Hort. No. 1), which are widely used in cut rose, and the quality and yield of the cut flowers were investigated year-round according to the four seasons; then, principal component analysis (PCA) was performed. The Rosa hybrida cv. Pink Beauty (PB) used as the scion showed high yield and excellent growth in autumn when the light intensity was high and the temperature was low. The PB grafted onto the R. multiflora Natal Briar (NA) rootstock showed improved growth in spring, autumn and winter, excluding summer, and had the effect of lengthening the stem. The growth of PB grafted onto R. indica Major (RI) rootstock was also improved in spring, autumn, and winter, except summer, and in particular, the stem was lengthened and thickened. The rosa hybrida cv. Pink Shine (PS) was a variety whose yield of cut flowers increased in summer when the temperature was high. The PS grafted onto the three rootstocks gave a higher yield of cut flowers than the PS scion. The graft of PS/Natal Briar gave longer stems than the PS scion, and the graft of PS/Major gave thicker stems than the PS scion. PS grafted onto the Rosa multiflora Hort. No. 1 (N1) rootstock gave more petals than the PS scion. As such, cut roses grafted onto the Rosa canina cv. Natal brier (NA) improved the stem length, increasing the adaptability to relatively high temperatures, and the Rosa indica cv. Major (RI) improved the stem length and stem diameter, enhancing the adaptability to relatively low temperatures.

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Section: Discussionmentioning

confidence: 99%

“…However, the PS produced a large number of cut flowers in the summer when the temperature was high (Table 2, Figures 1 and 3B). This may be because the PS, a spray rose, belongs to the floribunda rose line, a garden rose that is adaptable to harsh environments [26,35].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Four-Seasonal Quality and Yield of Cut Flower Roses Grafted onto Rosa Rootstocks

et al. 2022

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“…Flowering, of course, is significantly delayed [15]. Recently the spray-type cut rose 'Pink Shine,' bred by the National Institute of Horticulture and Herbal Science (NIHHS), Rural Development Administration (RDA), has been tested and produced in Kenya and Ecuador for export to the European market [16]. However, the morphological traits in the exported cultivars such as 'Pink Shine' were differently expressed in Kenya and Ecuador.…”

Section: Introductionmentioning

confidence: 99%

Influence of Suboptimal Temperature on Flower Quality and Floral Organ Development in Spray-Type Cut Rose ‘Pink Shine’

2023

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Low temperatures commonly delay flowering in cut roses but enhance final flower quality, i.e., biomass, petal doubling, and flower size. However, this information remains unclear for spray-type cut roses. This study was conducted to understand the effect of suboptimal temperatures on flower quality in the spray-type cut rose ‘Pink Shine.’ The 6-month-old rooted cuttings were cultivated in environmentally controlled growth chambers at four temperature levels: 25/20 °C (optimal temperature, OT) and 20/20 °C, 20/15 °C, and 15/15 °C (suboptimal temperatures, SOTs). As expected, SOTs significantly delayed the flowering time (11.2–25 days) but enhanced flower quality, with 129% and 32% increases in flower size and biomass, respectively. SOTs did not statistically amplify petal numbers, as expected, compared with OT. Instead, SOTs significantly increased stamen and carpel numbers by 1.3 and 2 times, respectively, resulting in a 1.4-fold increase in total floral organ formation. Moreover, SOTs increased the mRNA levels of A-function genes (RhAP1** and RhFUL**) and C-function genes (RhSHP*) but suppressed the B-function gene (RhPI*), which is linked to the development of plant reproductive structures (stamen and carpel) in spray-type cut roses. Conclusively, the growth temperature was more effective for quantity accumulation than for the number of petals but was similar in carpels. These results suggest that SOTs enhance carpel differentiation during flowering, implying that flowers may choose a reproductive strategy through carpels over petals.

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“…Every year, many cut rose varieties suitable for Korea's environmental conditions are bred [16][17][18]. However, cut roses that are newly bred varieties are not superior in all characteristics such as stem length, stem diameter, stem weight, and flower size throughout the four seasons.…”

Section: Introductionmentioning

confidence: 99%

Changes in Yield, Quality, and Morphology of Three Grafted Cut Roses Grown in a Greenhouse Year-Round

et al. 2022

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Cut roses are grown throughout the four distinct seasons of spring, summer, autumn, and winter in Korea. Especially in the very hot or cold seasons of summer or winter, the temperature and light environments inside a greenhouse cause abiotic stress on the growth of horticultural crops. In a greenhouse where shade cultivation is performed in summer, the temperature is high and the light intensity is low, whereas in winter when shade cultivation is not performed, both temperature and light intensity are low. This experiment investigated the year-round growth and yield changes of cut roses grafted onto three rootstocks. The root activity of rootstocks was generally higher than that of the scion. The stomata of the grafted cut roses showed morphological changes according to the seasons. Compared with the scion, the stomata of grafted cut roses became smaller and their number increased in summer, whereas only the stomata size increased in winter. The grafted cut roses had characteristics of high photosynthetic efficiency such as photosynthesis rate, stomatal conductance, transpiration rate from rootstocks under harsh environmental conditions including temperature and light intensity, and thus the photosynthetic efficiency was higher than that of the scion. There was no significant change in the yield of grafted cut roses, but flower quality parameters such as the stem height, stem thickness, and weight of grafted cut roses were improved according to the rootstocks compared with those of the scion. In particular, in cut roses grafted with R. multiflora cv. Natal Briar and Rosa indica ‘Major’ rootstocks, the weight increased as the stem lengthened and thickened in spring, autumn, and winter. Therefore, grafting is effective in improving the quality of cut roses grown under abiotic stress caused by harsh temperature and light intensity conditions during winter.

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Breeding of Spray Rose Cultivar ‘Pink Shine’ with Pink Color and Longer Vase Life

Cited by 3 publications

References 5 publications

Assessment of Four-Seasonal Quality and Yield of Cut Flower Roses Grafted onto Rosa Rootstocks

Assessment of Four-Seasonal Quality and Yield of Cut Flower Roses Grafted onto Rosa Rootstocks

Influence of Suboptimal Temperature on Flower Quality and Floral Organ Development in Spray-Type Cut Rose ‘Pink Shine’

Changes in Yield, Quality, and Morphology of Three Grafted Cut Roses Grown in a Greenhouse Year-Round

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