Distribution of<sup>14</sup>C-labelled assimilates in flowering carnation plants

Harris, G. P.; Jeffcoat, B.

doi:10.1080/00221589.1972.11514436

Cited by 11 publications

(9 citation statements)

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“…5) . Whereas it would appear that the ovaries were capable of incorporating C02 , the possibility of 14 C transport between the calyx/stem and the ovaries could not be disregarded since applied 14 C-sucrose can be transported from one part of the flower to another within 24h [12,24,25] . Furthermore, analysis of the 14 C-labelled sugar extracts of ovaries, showed that a considerable amount of radioactivity co-chromatographed with sucrose (Table 1) .…”

Section: Resultsmentioning

confidence: 99%

“…To elicit the ovary swelling which is stimulated by ethylene, external sources of carbohydrate are necessary . These are transported from the stem [12,19,24] (Fig . 6) and the petals [7,25] (Fig .…”

Section: Resultsmentioning

confidence: 99%

“…Many workers have postulated that the movement of plant growth regulators within the cut flower accounts for the shifting of the carbohydrate 0 8 sink from the petals to the ovary [6,10,12,17,19,21,231 . This possibility is currently being investigated .…”

Section: Resultsmentioning

confidence: 99%

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Senescence of cut carnation flowers: Ovary development and CO2 fixation

Cook

Staden

1982

Plant Growth Regul

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In the presence of ethylene, which enhances carnation flower senescence, carbohydrates contribute to ovary growth not only from the stem and calyx but also from the petals. With silver thiosulphate and ethanol treatments which delay flower senescence, the petals remain the active sink and ovary development is suppressed . Ethylene stimulated chloroplast development in the ovary wall . However, the calyx plus stem of all treatments showed the greater photosynthetic ability and transported a major portion of the synthesised products to the ovary .

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Senescence of cut carnation flowers: Ovary development and CO2 fixation

Cook

Staden

1982

Plant Growth Regul

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“…In most cases it is clear that there is an organized distribution of current assimilate from the different source leaves to the sinks with, for example, lower leaves predominantly supporting basally positioned sinks, upper leaves supporting more terminally positioned sinks, and mid-positioned leaves supporting both upper and lower sinks (Wardlaw, 1968;Rawson and Hofstra, 1969;Harris and Jeffcoat, 1972;Dickson and Isebrands, 1986). Some changes in these patterns of assimilate distribution may occur during reproductive development as flowers and fruits are formed -mid positioned leaves may then support only upper or adjacent reproductive sinks rather than contributing assimilate more widely (Rawson and Hofstra, 1969;Harris and Jeffcoat, 1972). Such allocation patterns may also display marked sectoriality whereby only those sinks in the same or neighbouring orthostichy as the source leaf are supported (Pate and Farrington, 1981;Watson and Casper, 1984;Oparka and Davies, 1985;Marshall, 1996).…”

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confidence: 94%

The pattern of¹⁴C-assimilate distribution in chrysanthemum cv. Red Delano with particular reference to branch interrelations

Ahmad

Marshall²

1997

Journal of Horticultural Science

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“…The flower bud is a major sink for assimilates under favourable conditions, whereas a shortage of carbohydrates often leads to arrest the development. Since the petals are nearly achlorophyllous organs, very little photosynthesis occur in them and they depend entirely on adjacent calyx tissues/leaves for carbon source and osmotic components (Harris and Jaffcoat, 1972). Reducing sugar rather than sucrose were noted as the main constitute of sugar pool of the mature petals (Nichols, 1973).…”

Section: Variation In Total Sugar and Protein Content In Petalsmentioning

confidence: 99%

Analysis of Various Floral Components at Different Developmental Stages of the Flower

Adhikary¹

2017

Int.J.Curr.Microbiol.App.Sci

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Percentage of petal-water content and pH of the cell-sap of the petal of test flowers were determined at different developmental stages. The experimental results noticed that petal of developmental stages are altered their water content and pH of the cell-sap. Among the flowers, the floral pigment content in petal exhibited the following order Clitoria ternatea > Rosa indica >Hibiscus rosasinensis > Mirabilis jalapa. The colour pigments viz. flavonoids, anthocyanins and phenol derivatives, protein, sugar and other nutrients present in petal of test flower might have act as potent colorant, antioxidant and neutraceuticals in food market. The procurement of color pigments from petal of the flower at appropriate level i.e. basing on developmental stage, is highly essential for further processing and manipulation through screening and evaluation. Pigment manipulation and utilization in food industry is a new field for sustainable health aspect and alternatives technology for better green environment. K e y w o r d sAnthocyanin, Flavonoids, Petals, Developmental stage, Pigments. Accepted:21 June 2017 Available Online: 10 July 2017 Article InfoInt.J.Curr.Microbiol.App.Sci (2017) 6(7): 2053-2068 2054 biochemical composition of petal tissue. Flavonoids, the sub cellular localization is just one of several factors that determine the behaviour of the pigment molecule in the cell and the colour generated from it (Brouillard and Dangles, 1993).Flowering, often associated with senescence and death, is a dramatic phenomenon in monocarpic plants, where the whole plant dies after flowering or fruiting. In polycarpic plants, death is restricted to parts of the flower itself-those which senesce and abscise soon after flowering. This process represents a dramatic change in the pattern of differentiation at the shoot apex or in the axillary buds close to it. Such a complex process is regulated by both internal factors and environmental signals. In most cases, the flower is the organ with the shortest period of longevity (Halevy and Mayak, 1981), which varies greatly from species to species, but is relatively constant within any one species. The control mechanisms of flower growth and development during its life span have been reported only in few cases (Eason andWebster, 1995 and Teixeira da Silva, 2006b). Petals are the floral organs that primarily determine the commercial longevity of flowers, and as a consequence much attention has been given to the physiological, biochemical and genetic processes that occur during petal development (Eason and Webster, 1995).This developmental process is characterized by several phases including differentiation, cell division, cell enlargement and ultimate death i.e. senescence. Much of the petal growth is associated with the result of cell enlargement. Relatively little is known on the physiology of flower and petal in comparison with that of other plant organs, such as leaves. The whole natural period of growth and development is much shorter in petals than leaves and hence petals seem to be a...

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Distribution of¹⁴C-labelled assimilates in flowering carnation plants

Cited by 11 publications

References 0 publications

Senescence of cut carnation flowers: Ovary development and CO2 fixation

Senescence of cut carnation flowers: Ovary development and CO2 fixation

The pattern of¹⁴C-assimilate distribution in chrysanthemum cv. Red Delano with particular reference to branch interrelations

Analysis of Various Floral Components at Different Developmental Stages of the Flower

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Distribution of14C-labelled assimilates in flowering carnation plants

Cited by 11 publications

References 0 publications

Senescence of cut carnation flowers: Ovary development and CO2 fixation

Senescence of cut carnation flowers: Ovary development and CO2 fixation

The pattern of14C-assimilate distribution in chrysanthemum cv. Red Delano with particular reference to branch interrelations

Analysis of Various Floral Components at Different Developmental Stages of the Flower

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Distribution of¹⁴C-labelled assimilates in flowering carnation plants

The pattern of¹⁴C-assimilate distribution in chrysanthemum cv. Red Delano with particular reference to branch interrelations