Water relations and senescence of cut Iris flowers: effects of cycloheximide

Doorn, Wouter G. van; Harkema, H.; Song, Jeong Seob

doi:10.1016/0925-5214(94)00034-p

Cited by 22 publications

(14 citation statements)

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“…External treatment of cytokinins delays cut flowers senescence (LOUBAUD; VAN DOORN, 2004). Similar finding was reported by some researchers in alstroemeria and other ornamental plants (HICHLENTON, 1991; VAN DOORN, 1997;NAIR et al, 2000;GULZAR et al, 2005). Results obtained by HATAMZADEH et al, (2012) showed that the pulse treatment of cut Alstroemeria flowers with 10 µM TDZ (a cytokinin-like PGR) delayed petal abscission (3.3 days) and leaf yellowing (25.7 days) compared to the untreated flowers.…”

Section: Discussionsupporting

confidence: 79%

“…Study of ISLAM et al (2011) on Hemerocallis fulva showed that water uptake was increased in cut flowers held in vase solution containing 0.01-0.05 mM CHI, however a decrease in water uptake was seen with the increase in CHI concentration to 0.5 mM. Similar finding was observed by Van Doorn et al (1995) on Iris. Hassanpour; Karimi (2010) showed that the higher BA concentration (75 mg l -1 ) reduced water uptake and the rate of senescence increased.…”

Section: Discussionsupporting

confidence: 76%

“…It is influenced by water uptake and transpiration, being balance between these two processes (DA SILVA, 2003). Low water uptake is often due to occlusions located mainly in the basal stem end and microbes are common cause of stem end blockage ( VAN DOORN, 1997). This researcher indicated that vascular blockage causes a water deficit and thereby shortens the vase life.…”

Section: Discussionmentioning

confidence: 99%

“…CHI inhibits the flower opening and also delays senescence (SULTAN et al, 2002;GULZAR et al, 2005;ZHOU et al, 2005). The role of CHI in delaying the cut flowers senescence has been shown by several researchers ( VAN DOORN et al, 1995;GULZAR et al, 2005;ISLAM et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Changes in postharvest physio-biochemical characterustics and antioxidant enzymes activity of cut alsteroemeria aurantiaca flower as affected by cycloheximide, coconut water and 6-benzyladenine

Kaviani¹,

Hashemabadi²,

Matak³

2017

Biosci. J.

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Early leaf yellowing in cut alstroemeria (Alstroemeria aurantiaca) flowers before flower development and petal abscission is an important limiting postharvest quality and vase life factors. Early leaf senescence reduces postharvest longevity of cut flowers and promotes petal's wilting. A study was made to evaluate the response of cut alstroemeria flowers at varying concentrations of cycloheximide (CHI) (50, 100 and 200 mg l -1 ), coconut water (5, 10 and 20%) and 6-benzyladenine (BA) (50, 100 and 200 mg l -1 ). CHI, coconut water and BA extended the vase life at all concentrations compared to the control, but coconut water at 5% concentration (with 17.39 days) was the most effective treatment. Control cut flowers showed the least vase life (10.76 days). Ethylene production in cut flowers promoted flower senescence. All concentrations of CHI, coconut water and BA delayed ethylene production compared to the control. Treatment of cut flowers with coconut water at concentration of 5% maintained the highest fresh weight of flowers and increased the content of water uptake. The chlorophyll degradation was significantly reduced by the application of CHI, coconut water and BA. The maximum content of membrane's lipid peroxidation and antioxidant enzymes activity (super oxide dismutase and peroxidase) was obtained in control cut flowers. Thus, 5% fresh coconut water has the potential to be applied as vase solution (preservative medium) due to prolongs of cut alstroemeria flowers.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Changes in postharvest physio-biochemical characterustics and antioxidant enzymes activity of cut alsteroemeria aurantiaca flower as affected by cycloheximide, coconut water and 6-benzyladenine

Kaviani¹,

Hashemabadi²,

Matak³

2017

Biosci. J.

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“…La longevidad de los pétalos está limitada por la regulación de etileno que producen las flores al ser cortadas, sumado a la oclusión en el xilema que resulta en una disminución en la tasa de absorción de agua (Doorn et al, 1995).…”

Section: Introductionunclassified

Uso eficiente del agua para el cultivo de rosa cv. Freedom bajo invernadero

Arévalo-H

Vélez

Camacho-Tamayo

2013

Rev. bras. eng. agríc. ambient.

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RESUMENDeterminar el requerimiento de agua y el momento adecuado de distribución, es un factor fundamental para el cultivo de flores. El objetivo del presente trabajo fue determinar el efecto de la aplicación de tres láminas de riego sobre el desarrollo y producción del cultivo de la Rosa cv. Freedom, bajo invernadero. El experimento se realizó con tres láminas de riego en un cultivo de rosa (Rosa spp.) cv. Freedom. Se analizó el crecimiento de los tallos florales, la vida en florero, la producción y la eficiencia en el uso del agua. Los tratamientos se basaron en tres niveles de evapotranspiración de cultivo (ETc) (70, 80 y 100%). Durante el estudio, el cultivo se mantuvo en producción constante. Se aplicaron 384,87, 254,25 y 218,97 m 3 correspondiente a 100, 80 e 70% de ETc respectivamente, significando un ahorro de agua de 14,0 y 21,8% en el 80 e 70% de ETc respectivamente. El coeficiente de cultivo (Kc) vario entre 0,58 y 1,65, con una media de 1,13. No se encontraron diferencias en la producción. Las curvas de crecimiento presentaron incremento continuo, con ajuste al modelo logístico. El 70% de ETc presentó la mayor eficiencia en el uso del agua, con 185 tallos m -3 . La conservación media de los tallos florales fue de 12 a 15 días. La mayor causa de pérdida fue la deshidratación, que inició en el día 11, comportamiento normal del tallo floral.Palabras-clave: evapotranspiración, curva de crecimiento, manejo del agua, riego deficitario Efficient use of water for rose crop cv. Freedom in greenhouse ABSTRACT To determine the water requirements and timing of distribution is a key factor for growing flowers. The aim of this study was to determine the effect of applying three levels of water on the development and yield of rose cv. Freedom, under greenhouse conditions. The experiment was conducted with three levels of water in rose crop (Rosa spp.) cv. Freedom. The analyzed variables were: growth of flowering stems, vase life, yield and efficiency in water use. The treatments were based on three levels of crop evapotranspiration (ETc) (70, 80 and 100%). During the study, the crop yield was constant. The volume of water applied was 384.87, 254.25 and 218.97 m 3 corresponding to ETc -100, 80 and 70%, respectively, meaning a water savings of 14.6 and 21.8% in the ETc -80 and 70%, respectively. The crop coefficient (Kc) varied between 0.58 and 1.65, with a mean value of 1.13. There were no differences in yield. The growth curves showed a continuous increase, adjusted to a logistic model. The treatment of ETc -70% had the highest efficiency in water use, with 185 stems m -3 . The mean conservation of flower stalks was 12 to 15 days. The major cause of elimination was dehydration, but this started on day 11, a normal behavior of the floral stem.

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