The effect of various environmental factors on flowering of gladiolus. I. Light intensity

Shillo, R.; Halevy, A. H.

doi:10.1016/s0304-4238(76)80004-0

Cited by 23 publications

(5 citation statements)

References 2 publications

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“…Decreases in the no. of flowers with low light intensities have also been reported in 'Georgia' Easter lilies (8) and the Gladiolus 'San Souci' and 'Spic and Span' (17).…”

Section: Resultsmentioning

confidence: 82%

The Influence of Greenhouse Environmental Factors on Forcing Dahlia variabilis Willd.1

Durso

Hertogh

1977

J. Amer. Soc. Hort. Sci.

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Dutch-grown tuberous-rooted dahlias, ‘Kolchelsee’ and ‘Park Princess’, were forced from January to June in 1975 and 1976. In all experiments, plant height was controlled by applying 0.5 mg/pot of ancymidol 2 weeks after planting. Fertilization was essential and an application of one of several slow-release formulations of Osmocote or weekly applications of 20N—8.8P—16.6K (200 ppm N) as a soluble fertilizer produced high quality plants which flowered in approximately 70 days. The highest quality plants and best height control was obtained with 25°C day and 16° night temperatures. Flowering was delayed at 24/12° day/night temperatures, and although flowering was accelerated at 28/17° and 29/20° day/night temperatures plant quality was adversely affected. Natural spring photoperiods which increased from 10 to 14 hours were optimal for forcing. Long days given either as a 16-hour photoperiod or as a 4-hour night break delayed flowering slightly. Dahlias grown under an 8-hour photoperiod flowered the earliest but not all plants flowered. Dahlias required high light intensities during forcing. Under 50% shading plants were too tall for pot plant use even after treatment with ancymidol.

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“…Decreases in the no. of flowers with low light intensities have also been reported in 'Georgia' Easter lilies (8) and the Gladiolus 'San Souci' and 'Spic and Span' (17).…”

Section: Resultsmentioning

confidence: 82%

The Influence of Greenhouse Environmental Factors on Forcing Dahlia variabilis Willd.1

Durso

Hertogh

1977

J. Amer. Soc. Hort. Sci.

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“…Insufficient light can result in a lanky, weak stem, too short spikes and flower desiccation due to a deficiency of assimilation products (Suschman, 1998b;Goldblatt, 1996). Plants at the 4 th to 6 th leaf stage (floral differentiation) are most sensitive to the prevailing light conditions (Shillo & Halevy, 1976b;Imanishi & Imae, 1990). A lower plant density means more light interception by the plants (Suschman, 1998b).…”

Section: Growth and Developmental Cycle Of Summer Flowering Speciesmentioning

confidence: 99%

“…Light intensity is very important in gladioli. Long days delay blooming but increase the flowering percentage and enhance flower quality (Shillo & Halevy, 1976b;1976c). Low light in winter can lead to blindness and reduced flower quality (Imanishi & Imae, 1990).…”

Section: Production Phasementioning

confidence: 99%

“…The ultimate aim of forcing the corms is to produce cut spikes (Waithaka, 1986). Thus future work will need to be undertaken to determine the exact effect of external factors, such as light intensity, temperature and daylength on improving flowering as inflorescence development is under the control of these environmental factors (Shillo & Halevy 1976b; The G. scabridus corms were successfully forced to flower out of season. Temperatures of 10, 5.5 and 2 QC for 6 to 8 weeks all show successful growth, however, the results indicated that corms need to be stored for longer at the warmer temperatures for successful corm growth.…”

Section: Second Studymentioning

confidence: 99%

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Gladiolus Scabridus - The Road to Conservation and Commercialization

Campbell¹,

Bower²

2003

Acta Hortic.

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“…These phenomena, called “blasting,” have been reported in various plant species such as lilies (Einert and Box 1967, Kamerbeek and Durieux 1971, Mastalerz 1965), tulips (de Munk 1973, de Munk and Gijzenberg 1977, Rees and Briggs 1976, Toyoda and Nishii 1957, 1958), roses (Moe 1971a, 1971b, Zieslin and Halevy 1975a, 1975b) and gladioli (Shillo and Halevy 1976a). Blasting is dependent on factors such as high temperature (Rees and Briggs 1976, Toyoda and Nishii 1957, 1958), low temperature and/or low light intensity (Einert and Box 1967, Mae and Vonk 1974, Moe 1971a, Shillo and Halevy 1976b, 1976c, Zieslin and Halevy 1975b) and hormonal status (Kamerbeek and Munk 1976, de Munk 1973, de Munk and Gijzenberg 1977). Blasting of flower buds or inflorescences under unsuitable environment conditions has been broadly observed beyond these plant species, but little is known about its molecular aspects.…”

Section: Introductionmentioning

confidence: 99%

Enhanced expression of genes for ACC synthase, ACC oxidase, and NAC protein during high‐temperature‐induced necrosis of young inflorescences of Cymbidium

Mita

Henmi

Ohno

2006

Physiologia Plantarum

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Growing Cymbidium under high-temperature conditions (25-30°C) results in the necrosis of young inflorescences. An increase in the evolution of ethylene was correlated with the necrosis. To study the molecular aspects of hightemperature-induced necrosis of Cymbidium floral buds, we isolated complementary DNA (cDNA) clones for proteins that are likely to be involved in the biosynthesis of ethylene during high-temperature-induced necrosis of young inflorescences, namely, 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (CyACS1) and ACC oxidase (CyACO1). In addition, a cDNA (CyNAC1) encoding an NAC protein whose expression is modulated during high-temperature treatment was isolated by differential display. High levels of expression of CyACS1, CyACO1 and CyNAC1 were observed in the necrotic inflorescences of wild-type Cymbidium at high temperatures. Bud necrosis was not observed in the mericlone mutant (nhn, non-high-temperature-induced necrosis) of Cymbidium. Ethylene evolution was lower in nhn than in wildtype, but application of exogenous ACC or ethephon to the young inflorescences of nhn restored the high-temperature necrosis response. Expression of CyACS1, CyACO1 and CyNAC1 did not increase with hightemperature treatment in the nhn mutant. Expression levels of CyACS1, CyACO1 and CyNAC1 in necrotic inflorescences of nhn treated with 5.0 mM ACC were much lower than in necrotic inflorescences of wild-type at high temperatures, but CyACS1 and CyNAC1 were stimulated by ACC treatment. These results suggest that ethylene is involved in high-temperature necrosis of young inflorescences of Cymbidium and that an NAC protein may be involved in the regulatory mechanisms of genes that are regulated during necrosis.

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The effect of various environmental factors on flowering of gladiolus. I. Light intensity

Cited by 23 publications

References 2 publications

The Influence of Greenhouse Environmental Factors on Forcing Dahlia variabilis Willd.1

The Influence of Greenhouse Environmental Factors on Forcing Dahlia variabilis Willd.1

Gladiolus Scabridus - The Road to Conservation and Commercialization

Enhanced expression of genes for ACC synthase, ACC oxidase, and NAC protein during high‐temperature‐induced necrosis of young inflorescences of Cymbidium

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