Nerium oleander L. `Cranberry Cooler', `Grenadine Glace', `Pink Lemonade', `Peppermint Parfait', `Raspberry Sherbet' and `Petite Peaches and Cream'

Mackay, Wayne A.; Arnold, Michael A.; Parsons, Jerry

doi:10.21273/hortsci.40.1.265

HortSci

2005

DOI: 10.21273/hortsci.40.1.265

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Nerium oleander L. `Cranberry Cooler', `Grenadine Glace', `Pink Lemonade', `Peppermint Parfait', `Raspberry Sherbet' and `Petite Peaches and Cream'

Wayne A. Mackay¹,

Michael A. Arnold²,

Jerry Parsons³

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Cited by 3 publications

(2 citation statements)

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“…ance (Mackay et al, 2005;Niu et al, 2008). Cultivars are clonally propagated by cuttings (Hartmann et al, 2002), but also tissue culture techniques have been described: Jacquemont et al (1992) reported on axillary proliferation of 'Petite Salmon', a dwarf cultivar; Pal et al (1990) induced root organogenesis from leafderived calli but failed to induce shoot organogenesis; Santos et al (1994) reported on somatic embryogenesis from oleander leaf explants, whereas more recently, Ozden-Tokatli et al (2008) have referred a protocol for the medium-term conservation of oleander buds in synthetic seeds.…”

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Micropropagation of Oleander (Nerium oleander L.)

Vila¹,

Sales²,

Ollero³

et al. 2010

horts

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Successful propagation of Nerium oleander L. (oleander) was achieved by in vitro methods. Shoot cultures were initiated from seedlings of wild-growing plants and from shoot apices of adult plants belonging to the commercial cultivars Splendens Giganteum, Revanche, and Alsace. Axillary shoot breaking from shoot tips excised from these cultures required the presence of either 6-benzylaminopurine (BA) or thidiazuron (TDZ). The higher number of axillary shoots from juvenile material was obtained by culturing shoot tips from BA-pretreated material derived from seedlings on a modified Schenk and Hildebrandt medium (SHM) supplemented with BA or TDZ (average of 3.9 shoots per explant with a mean length of 10.4 mm) and when the media were supplemented with 8.8 μM TDZ (average of 3.5 shoots per explant with a mean length of 7.3 mm) or 4.4 μM BA (average of 3.3 shoots per explant with a mean length of 12.3 mm). Among cultivars, cv. Revanche showed best shoot proliferation rates, especially when explants were cultured on Woody Plant Medium (average of 3.2 shoots per explant with a mean length of 10.2 mm). Adventitious bud differentiation from oleander leaves is also reported. Leaves excised from seedling-derived shoot cultures responded better than those from adult plant-derived shoot cultures (40% versus 5%, respectively). Bud differentiation required the presence of TDZ in the SHM medium, although shoot development was only achieved on transference of explants to media without TDZ but supplemented with BA and indoleacetic acid (IAA) or BA, kinetin, and IAA. Axillary and adventitious shoots were easily rooted (99%) and successfully (95% to 100%) transferred to soil.

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confidence: 99%

Micropropagation of Oleander (Nerium oleander L.)

Vila¹,

Sales²,

Ollero³

et al. 2010

horts

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“…It grows well in warm subtropical regions and is commonly used as an ornamental plant in landscapes, parks, and along roadsides. About 400 cultivars have been named, representing a wide variety of flower colors (Mackay et al, 2005). Early work illustrated, although no information on cultivar was given, that leaf gas exchange of oleander decreased as soil moisture content decreased (Björkman et al, 1980).…”

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Growth and Physiological Responses to Drought Stress in Four Oleander Clones

Niu¹,

Rodriguez²,

Mackay³

2008

J. Amer. Soc. Hort. Sci.

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Oleander (Nerium oleander L.), native to southern Asia and the Mediterranean region, is a fast-growing evergreen shrub planted widely in the southern United States. A greenhouse study was conducted to quantify the growth and physiological responses of two cultivars, Hardy Pink and Hardy Red, and two breeding lines, EP1 and EP2, of oleander to a 12-week cyclic drought stress. Drought stress was imposed by irrigating the plants to near container capacity and then withholding irrigation until predetermined container weights were reached. Compared with the control where plants were well-irrigated throughout the experiment, shoot dry weight (DW) was reduced by 52%, 41%, 34%, and 11% in EP1, EP2, ‘Hardy Red’, and ‘Hardy Pink’, respectively. Root-to-shoot DW ratio was higher for the drought-treated plants than the control, regardless of cultivar or breeding line (hereafter, clone). The increase in root-to-shoot DW ratio from the drought treatment was highest in EP1, followed by EP2, ‘Hardy Pink’, and ‘Hardy Red.’ New shoot growth was greatest in ‘Hardy Pink’, followed by ‘Hardy Red’, EP1, and EP2. The number of newly developed shoots during the drought treatment period was 6.8, 3.0, 0.7, and 0.0 in ‘Hardy Pink’, ‘Hardy Red’, EP1, and EP2, respectively. As substrate volumetric moisture content decreased from 30%, leaf net photosynthetic rate (Pn), evapotranspiration rate (E), and stomatal conductance (gs) decreased in all clones. A curvilinear relationship between Pn and gs was found in all clones. EP1 had a lower maximum Pn (Pm) than those of ‘Hardy Pink’ and EP2 but was not different from that of ‘Hardy Red’. Predawn leaf water potential began to decrease rapidly when substrate moisture content dropped below 15% in all clones. During the dry-down, compared with the control, increases in minimal fluorescence (F0) or decreases in maximal fluorescence (Fm) and Fv/Fm (Fv = Fm – F0) in drought-stressed plants were observed in all clones, indicating some damage in photosystem II from the drought treatment. However, compared with growth parameters, the differences in physiological responses to drought stress among the clones were much smaller. ‘Hardy Pink’ was more tolerant to drought stress than ‘Hardy Red’ and the other two clones in terms of productivity because it maintained greatest growth during the drought-stress period. However, EP2 and EP1 may be more tolerant if survival is concerned because they had a higher root-to-shoot DW ratio with minimal new growth.

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Plant regeneration of Nerium oleander L. from alginate-encapsulated shoot explants after short-term cold storage

Hatzilazarou

Kostas

Economou

2018

The Journal of Horticultural Science and Biotechnology

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Nerium oleander L. `Cranberry Cooler', `Grenadine Glace', `Pink Lemonade', `Peppermint Parfait', `Raspberry Sherbet' and `Petite Peaches and Cream'

Cited by 3 publications

References 1 publication

Micropropagation of Oleander (Nerium oleander L.)

Micropropagation of Oleander (Nerium oleander L.)

Growth and Physiological Responses to Drought Stress in Four Oleander Clones

Plant regeneration of Nerium oleander L. from alginate-encapsulated shoot explants after short-term cold storage

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