Flowering and changes in respiration in Asiatic hybrid lilies as influenced by bulb vernalization

Lee, Ae Kyung; Suh, Jeung Keun; Roh, Mark S.

doi:10.1016/j.scienta.2009.09.007

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…respectively. Thus, the extension of the exposure period to cold and the reduction of the number of flowers per plant are typical features of L. longiflorum, as reported by Roh (1985) and Lee et al (2010).…”

Section: Plant Heightsupporting

confidence: 60%

“…Ace (L. longifl orum), increasing the storage period at low temperatures diminished this feature where plants from bulbs exposed to 0 days of vernalization produced 5.2 fl owers while those that remained for 15, 30 and 45 days have produced 4.6; 2.4; and 2.3 fl owers per plant, respectively. Thus, the extension of the exposure period to cold and the reduction of the number of fl owers per plant are typical features of L. longifl orum, as reported by Roh (1985) and Lee et al (2010).…”

Section: Number Of Flowers Per Plantsupporting

confidence: 60%

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Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

Almeida

Barbosa

Grossi

et al. 2017

SCA

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Exposure of bulbs to cold, a physiological phenomenon called vernalization, and bulb size are important factors in the production of lily bulbs and flowers. This study aimed to verify the influence of vernalization of bulbs on flowering cut lily plants, as well as the impact of size and shape of harvest on the production and quality of flowers and bulbs. In turn, the way the stems of the plants used for cutflower production are cropped is of higher importance for the production of new flower bulbs. In this sense, the experiment was conducted in Viçosa, MG, in a greenhouse in a randomized block design, in split splot scheme with three replications, in which the vernalization periods (25, 35 and 45 days at 4 ± 1 C) constituted the plots; bulb sizes (diameters of 3.2-3.8 cm; 2.5-3.2 cm 1.9-and 2.5 cm), subplots and ways to harvest (full harvest of the stem at the required length for the commercial harvest of the flower, commercial stem harvest at the commercial length, maintaining 10cm of stem in the soil; removal of the floral buds as soon as their appearance is observed and harvest at the end of the season), the sub subplots. The bulbs were planted in beds, with 15 x 20 cm spacing. It was evaluated the number of plants that flowered and the number of flowers, the length and the diameter of the floral buds, fresh and dry weights, diameter and plant height as well as number, perimeter and amount of fresh and dry bulbs. There was a decrease in the plant height with the increase of the vernalization period and a reduction of the diameter of the planted bulbs, as well as of the number and the fresh and dry weights of the produced buds. The production of flowers and buds in number, size and weight was directly proportional to the size of the planted bulbs, while the form of harvest with removal of flower buds increased the number, the perimeter and the fresh and dry weights of the buds. Bulbs with diameter between 3.2 -3.8 cm, stored for 25 days in cold chamber enable greater production of flowers and the highest stem height, factors that favor the increase in market value. Key words: Exposure to cold. Flowering. Way of harvest. Lilium longiflorum. ResumoA exposição dos bulbos ao frio, fenômeno fisiológico denominado vernalização, e o tamanho do bulbo são importantes na produção de flores de lírio. Por sua vez, a forma de colheita das hastes das plantas utilizadas para corte de flor é preponderante na produção de bulbos filhos. Este estudo teve como objetivo verificar a influência da vernalização dos bulbos em plantas de lírio em flor, bem como o impacto do tamanho e forma da colheita na produção e qualidade de flores e bulbos. O experimento foi conduzido em Viçosa, MG em casa de vegetação, em blocos casualizados, com parcelas sub-subdivididas, com três repetições, em que os períodos de vernalização (25, 35 e 45 dias, a 4± 1̊ C) constituíram as parcelas; os tamanhos de bulbo (diâmetros de 3,2-3,8 cm; 2,5-3,2 cm e 1,9-2,5 cm), as subparcelas e as formas de colheita (colheita total da haste no ponto de colheita c...

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Section: Plant Heightsupporting

confidence: 60%

Section: Number Of Flowers Per Plantsupporting

confidence: 60%

Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

Almeida

Barbosa

Grossi

et al. 2017

SCA

View full text Add to dashboard Cite

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“…Temperature does not appear to affect the respiratory activity of bulbs during storage, but, after planting, pre-cooled bulbs show significantly higher respiration and energy production than those stored at ambient temperature (about +18 °C), [ 25 ]. The respiration is higher both in the bulb scales and in developing shoots [ 26 , 27 ], probably due to the increased number of mitochondria following the cold treatment [ 28 ].…”

Section: Physiological Changes During Flower Maturation and Shoot mentioning

confidence: 99%

The Role of Temperature in the Growth and Flowering of Geophytes

Khodorova

Boitel-Conti

2013

Plants

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Among several naturally occurring environmental factors, temperature is considered to play a predominant role in controlling proper growth and flowering in geophytes. Most of them require a “warm-cold-warm” sequence to complete their annual cycle. The temperature optima for flower meristem induction and the early stages of floral organogenesis vary between nine and 25 °C, followed, in the autumn, by a several-week period of lower temperature (4–9 °C), which enables stem elongation and anthesis. The absence of low temperature treatment leads to slow shoot growth in spring and severe flowering disorders. Numerous studies have shown that the effects of the temperature surrounding the underground organs during the autumn-winter period can lead to important physiological changes in plants, but the mechanism that underlies the relationship between cold treatment and growth is still unclear. In this mini-review, we describe experimental data concerning the temperature requirements for flower initiation and development, shoot elongation, aboveground growth and anthesis in bulbous plants. The physiological processes that occur during autumn-winter periods in bulbs (water status, hormonal balance, respiration, carbohydrate mobilization) and how these changes might provoke disorders in stem elongation and flowering are examined. A model describing the relationship between the cold requirement, auxin and gibberellin interactions and the growth response is proposed.

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“…De‐vernalization refers to the delay or even inhibition of flowering due to exposition of plants to high temperature following vernalization. This phenomenon was previously reported in Arabidopsis (Bouché et al ., ), chicory (Périlleux et al ., ), wheat (McMaster et al ., ; Ottman et al ., ), lily (Lee et al ., ), and a range of other species. By contrast, anti‐vernalization denotes the deviation of the plant response to cold exposure due to high temperatures taking place before vernalization.…”

Section: Introductionmentioning

confidence: 99%

The proof is in the bulb: glycerol influences key stages of lily development

et al. 2018

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A bulb is a whole plant condensed into an underground organ. A geophyte's bulb comprises both food reserves and important developmental history that may affect its whole growth. In Easter lily (Lilium longiflorum), bulb size is associated with the plant's flowering pathwayvernalization or photoperiodand also affects sprouting, flower quality and abortion rate. The aim of this study was to investigate the reasons for the major physiological differences between large and small bulbs. Lily bulbs start their development from secondary meristems along the stem, with large bulbs being heavier and bear more scales than small ones. Peeling the outer scales of a large bulb converts its physiological responses into those of a small bulb, implying that the physiological discrepancies in plants developing from large or small bulbs are mediated by factors inherent to the bulb. We therefore performed broad analyses of the metabolite composition in the scales of bulbs subjected to temperature regimes affecting further plant development. We found a striking association between the level of glycerol, a primary metabolite mostly synthesized in the outer scales, and a delay in sprouting and flowering time, and reduction in abortion rate. Exogenous glycerol application to the bulbs before planting corroborated these results. Moreover, transcriptome analyses showed that flowering-promoting gene expression was downregulated in the bulb after glycerol treatment, while potential flowering inhibitor as well as a dormancy-related gene expressions were upregulated. Based on these studies, we postulate that glycerol is a major factor influencing both vegetative and reproductive development in lily.

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Flowering and changes in respiration in Asiatic hybrid lilies as influenced by bulb vernalization

Cited by 11 publications

References 14 publications

Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

The Role of Temperature in the Growth and Flowering of Geophytes

The proof is in the bulb: glycerol influences key stages of lily development

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