Gibberellin substitution for the high night temperatures required for the long-day promotion of flowering in Gypsophila paniculata L.

Shlomo, Eitan; Shillo, R.; Halevy, A. H.

doi:10.1016/0304-4238(85)90103-7

Cited by 12 publications

(7 citation statements)

References 3 publications

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“…Fresh weight in 'Perfecta' was highest among the three varieties. Our results confirm other studies that indicated that parameters of inflorescence architecture or fresh weight depend on environmental conditions (i.e., temperature, photosynthetic photon flux, supplemental lighting), varieties, and application of plant growth substances (Davies et al, 1996;Doi et al, 1989;Hayashi et al, 1992;Hicklenton, 1986;Hicklenton et al, 1993;Shlomo et al, 1985). Figure 3 plots parameters of architecture against fresh weight grown under four densities in 'New Face'.…”

Section: Resultssupporting

confidence: 87%

“…One crucial determinant of filler flower quality is having clusters of multiple florets. This characteristic is decided by inflorescence architecture such as the total number of florets, number of branches, and branch length, however, understanding inflorescence architecture is difficult because the numbers of florets and branches per cut flower depend on environmental conditions and varieties (Doi et al, 1989;Hayashi et al, 1992;Hicklenton, 1986;Hicklenton et al, 1993;Shlomo et al, 1985). Moreover, particular inflorescence architectures have complex relationships with each other.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Plant Density and Variety on Allometry of Inflorescence Architecture in Gypsophila paniculata L.

Fudano

Hayashi

Yazawa

2007

J. Japan. Soc. Hort. Sci.

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The effect of plant density and variety on allometry in Gypsophila paniculata L. was studied. Increasing plant density significantly reduced fresh weight, total branch length (the sum of the lengths of all primary branches), number of dichasia, number of florets per dichasium, and total number of florets in cut flowers in 'New Face'. The relationships between fresh weight and the total branch length, number of dichasia, and total number of florets were negatively allometric, isometric, and positively allometric, respectively. There were allometric relationships between fresh weight and the number of dichasia, number of florets per dichasium, and total number of florets on each branch order. The allometric exponents of regression relating the number of dichasia and the total number of florets to fresh weight increased from lower-to higher-order branches. On the other hand, the allometric exponents of regression relating the number of florets per dichasium to fresh weight were similar in almost all orders. Significant differences were found in fresh weight and parameters of inflorescence architecture among varieties grown under identical plant density. Allometric exponents relating the total branch length and number of dichasia to fresh weight, varied, and those relating the total number of florets to fresh weight were stable among varieties grown under identical plant density.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Effect of Plant Density and Variety on Allometry of Inflorescence Architecture in Gypsophila paniculata L.

Fudano

Hayashi

Yazawa

2007

J. Japan. Soc. Hort. Sci.

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“…Even at high PPF (710 µmo1•s -l •m -2 ), a low NT (8C) resulted in a proliferation of nonelongating vegetative shoots. This result is consistent with previous ones that indicate low flowering percentages of 'Bristol Fairy' with nights of ≤ 7C, irrespective of prevailing day temperature (Shillo, 1985;Shlomo et al, 1985). In contrast, the percentage of 'Bridal Veil' plants that flowered was independent of PPF and NT.…”

supporting

confidence: 92%

“…Gypsophila generally is grown as a protected crop, with night lighting supplied throughout the growth cycle during the winter to provide the longday (LD) conditions necessary for flowering (Shillo and Halevy, 1982). In addition, winter culture of 'Bristol Fairy' at high latitudes requires either heating the greenhouse to maintain night temperature (NT) at 11C (Shillo, 1985) or applying gibberellin (Shlomo et al, 1985) or benzylaminopurine (Doi et al, 1989) to ensure flowering. Even with these inputs, 'Bristol Fairy' flower quality and yield may be inhibited by low ambient photosynthetic photon flux (PPF) (Hicklenton, 1986).…”

mentioning

confidence: 99%

Night Temperature, Photosynthetic Photon Flux, and Long Days Affect Gypsophila paniculata Flowering

Hicklenton¹,

Newman²,

Davies³

1993

HortSci

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The effects of night temperature (NT) and photosynthetic photon flux (PPF) on time to flower and flower yield in `Bristol Fairy' and `Bridal Veil' Gypsophila paniculata L. (perennial baby's breath) were studied in controlled environments. Plants were grown with nights at 8, 12, 16, and 20C and 450 or 710 μmol·s-1·m-2 photosynthetic photon flux (PPF). Days were at 20C. In both cultivars, the times from the start of treatments to visible bud and from visible bud to anthesis were delayed at the lower PPF and at an NT <20C. The delays in `Bristol Fairy' were greater than those in `Bridal Veil'. Failure of `Bristol Fairy' plants to reach anthesis was common at SC NT and either 450 or 710 μmol·s-1·m-2 PPF; whereas in `Bridal Veil', nearly all plants flowered, regardless of environmental conditions. Flower yield (measured as fresh weight of inflorescences) decreased with NT in `Bristol Fairy' but was highest at 8 or 12C in `Bridal Veil'. In a second experiment using the same cultivars, the effect of curtailing long-day (LD) conditions at various stages on stem elongation and flower yield was investigated. `Bristol Fairy' required more LD cycles (>56) than `Bridal Veil' for maximum stem elongation and flower yield. Terminating LD conditions before the start of inflorescence expansion resulted in lower yields and shorter plants in both cultivars.

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“…On the other hand, plants initiate flower buds without exposure to chilling under long-day conditions (5,12,14), although chilling will substitute for long-day condition (8,13). These flowering responses related to chilling requirements suggest that exposure to chilling are accumulated through complex biochemical processes which compose a flowering process.…”

Section: Introductionmentioning

confidence: 99%

Growth and Flowering of Gypsophila paniculata L.'Bristol Fairy'Selections as Influenced by Temperature and Shoot-Root Interactions.

Doi

Morita

Ogasawara

et al. 1991

Engei Gakkai zasshi

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Gibberellin substitution for the high night temperatures required for the long-day promotion of flowering in Gypsophila paniculata L.

Cited by 12 publications

References 3 publications

Effect of Plant Density and Variety on Allometry of Inflorescence Architecture in Gypsophila paniculata L.

Effect of Plant Density and Variety on Allometry of Inflorescence Architecture in Gypsophila paniculata L.

Night Temperature, Photosynthetic Photon Flux, and Long Days Affect Gypsophila paniculata Flowering

Growth and Flowering of Gypsophila paniculata L.'Bristol Fairy'Selections as Influenced by Temperature and Shoot-Root Interactions.

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